Communication

1616 relations: ACP 131, Acronyms and abbreviations in avionics, Across the Universe, Active antenna, Active structure, Adcock antenna, Additionally guyed tower, Advanced Civil Speed Enforcement System, Aerial, AGM-28 Hound Dog, Air traffic control radar beacon system, Airborne Interception radar, Airchain, Akash Mitra Mandal, Al-Manar, Alan Ford (comics), Alexander Meissner, Alexander Stepanovich Popov, Allen B. DuMont, Allen Telescope Array, ALLISS, ALSE, Altazimuth mount, AM stereo, Amateur radio direction finding, Amateur radio station, Ambassador Magma, Ambient backscatter, Amelia Earhart, Ames Laboratory, Amos (satellite), Amos-2, AN/APG-66, AN/APG-68, AN/APQ-181, AN/FLR-9, AN/FRD-10, AN/MPQ-64 Sentinel, AN/PRC-117F, AN/PRC-152, AN/SPS-43, AN/TPQ-36 Firefinder radar, AN/TPS-58, AN/TRC-97, Anechoic chamber, Antenna, Antenna amplifier, Antenna analyzer, Antenna aperture, Antenna array, ..., Antenna blind cone, Antenna boresight, Antenna diversity, Antenna effect, Antenna efficiency, Antenna equivalent radius, Antenna factor, Antenna feed, Antenna gain, Antenna gain-to-noise-temperature, Antenna interface standards group, Antenna Man (Nordgulen), Antenna measurement, Antenna Measurement Techniques Association, Antenna noise temperature, Antenna rotator, Antenna tuner, Antique radio, Antiresonance, Antti Räisänen, Aon Center (Chicago), AOR (company), Aperture-to-medium coupling loss, Apex (radio band), Architecture of Hong Kong, Arfon transmitting station, Ariane Passenger Payload Experiment, Ark Two Shelter, Array factor, ASELSAN, Astronomical interferometer, Atacama Large Millimeter Array, Athens ERA-1 transmitter, Atlas LV-3B, Atmospheric electricity, Attack-time delay, Attitude control, Augie Hiebert, Auston switch, Australian Inland Mission Hospital, Birdsville, Automatic dependent surveillance – broadcast, Automatic Gun-Laying Turret, Automatic meter reading, Automatic transmission system, Automobile drag coefficient, Avro 730, AWX antenna, Île Verte (Grenoble), Žižkov Television Tower, Backstay insulator, Bad Sobernheim, Baiyoke Tower II, Balun, Band expander, Bandwidth (signal processing), Barbaric Machine Clan Gaiark, Barrett Communications, BASE jumping, Base station, Base station subsystem, Base transceiver station, Batteryless radio, Battle of the Malacca Strait, Batwing antenna, Bazita Peak TV Tower, BBC Two '1991–2001' idents, Beacon Hill transmitting station, Beacon Mountain, Beale Air Force Base, Beam park, Beam steering, Beam tilt, Beam waveguide antenna, Beam-powered propulsion, Beamforming, Beamwidth, Beechcraft Model 17 Staggerwing, Bell Internet, Bell Laboratories Layered Space-Time, Bell Labs Holmdel Complex, Belling-Lee connector, Bellini–Tosi direction finder, Ben Munk, Bender (Futurama), Beriev A-50, Bermuda rig, Beverage antenna, Bharat Broadband Network, Bias tee, Biconical antenna, Bishop Wilton Wold, Black Hill transmitting station, Bleep and Booster, Blosenbergturm, Bluetooth Low Energy, BNC connector, BOAC Flight 781, Bob Heil, Bochum Observatory, Body capacitance, Boerentoren, Boistfort Peak, Border outpost, Box truss, Brück aerial testing facility, Bridge Day, British Telecom microwave network, Broadband over power lines, Broadcast engineering, Broadcast license, Broadcast transmitter, Broadcasting, Brocken Transmitter, BT Tower, Bud Industries, Bullbar, Burj Khalifa, Cable television headend, Cage aerial, Caldbeck transmitting station, Campervan, Campus of the Massachusetts Institute of Technology, Candelabra, CanSat, Cantenna, Capital Radio (pirate), Cappello Alpino, Captain-class frigate, Caravan (towed trailer), Carpentier joint, Carson bandwidth rule, Carson Morrison, Cassegrain, Cassegrain antenna, Cassegrain reflector, Cassini–Huygens, Castor, Louisiana, Cavity magnetron, CBAL-FM, CBC Television, CBCL-FM, CBCV-FM, CBF-FM-10, CBGA-FM, CBI-FM, CBJX-FM, CBKF-FM, CBM-FM, CBTK-FM, CBV-FM, Cebreros Station, Cedar Hill, Texas, Cell site, Cell tower technician, Cellmax, Cellular repeater, Center for Southeastern Tropical Advanced Remote Sensing, Central Instrumentation Facility, Central Park (skyscraper), CenturyLink Building, CFAN-FM, CFBS-FM, CFBT-FM, CFBU-FM, CFCP-FM, CFCY-FM, CFDV-FM, CFEL-FM, CFFM-FM, CFGE-FM, CFIC-FM, CFLN-FM, CFML-FM, CFMU-FM, CFNA-FM, CFNE-FM, CFNM-FM, CFOR-FM, CFPW-FM, CFRH-FM, CFRI-FM, CFRT-FM, CFSF-FM, CFSI-FM, CFSM-FM, CFUR-FM, CFVR-FM, CFXO-FM, CFZN-FM, ChampionChip, Channel 5 (UK), Channel Chuckles, Characters in the Novels of the Company, Charles H. Papas, Charles Samuel Franklin, Chasqui I, CHBB-FM, CHBE-FM, CHBO-FM, CHBZ-FM, CHDR-FM, Cheaha Mountain, Chequamegon-Nicolet National Forest, CHET-FM, Chetwynd, British Columbia, Chevrolet C/K, CHFR-FM, CHFT-FM, CHGS-FM, CHHO-FM, China Central Television, Chinese space program, CHLQ-FM, CHNC-FM, CHNO-FM, CHNV-FM, CHOA-FM, Chocorua Lake, CHPH-FM, CHPQ-FM, CHRQ-FM, CHRZ-FM, CHSJ-FM, CHSN-FM, CHSU-FM, CHTC-FM, CHTN-FM, Chu–Harrington limit, CHUK-FM, CHVD-FM, CHWV-FM, CHXL-FM, CHYZ-FM, CIAU-FM, CIBC Tower, CIBU-FM, CIBX-FM, CICU-FM, CIDI-FM, CIEU-FM, CIGM-FM, CIGO-FM, CIGV-FM, CIHS-FM, CIHW-FM, CIJK-FM, CIKX-FM, CILK-FM, CIMS-FM, CINB-FM, CINI-FM, CINN-FM, CINU-FM, CIPC-FM, CIRA-FM, Circulator, CIRP-FM, CIRX-FM, Citizens band radio, City of New York (1885 ship), CIUP-FM, CIUR-FM, CIVL-FM, CIXL-FM, CIYN-FM, CJAI-FM, CJAV-FM, CJCH-FM, CJCI-FM, CJCY-FM, CJED-FM, CJET-FM, CJFH-FM, CJGO-FM, CJGY-FM, CJIB-FM, CJIJ-FM, CJJC-FM, CJJM-FM, CJKC-FM, CJLS-FM, CJLT-FM, CJMC-FM, CJMG-FM, CJNE-FM, CJNS-FM, CJNW-FM, CJOC-FM, CJQQ-FM, CJRG-FM, CJRW-FM, CJSD-FM, CJSE-FM, CJSU-FM, CJTW-FM, CJVD-FM, CJVR-FM, CJXK-FM, CJZN-FM, CKAP-FM, CKAU-FM, CKBZ-FM, CKCQ-FM, CKDR-FM, CKDV-FM, CKEC-FM, CKEN-FM, CKEX-FM, CKFI-FM, CKFU-FM, CKGI-FM, CKGR-FM, CKHA-FM, CKHC-FM, CKIQ-FM, CKKC-FM, CKKQ-FM, CKKS-FM, CKLM-FM, CKLR-FM, CKLZ-FM, CKMQ-FM, CKMW-FM, CKNN-FM, CKOL-FM, CKOY-FM, CKPR-FM, CKQC-FM, CKQK-FM, CKQQ-FM, CKQR-FM, CKRE-FM, CKRH-FM, CKRP-FM, CKRW-FM, CKSA-FM, CKSR-FM, CKTO-FM, CKUM-FM, CKUT-FM, CKVB-FM, CKVX-FM, CKWT-FM, CKWY-FM, CKXO-FM, CKXX-FM, CKYY-FM, Class-D amplifier, CN Tower, Coaxial antenna, Coaxial cable, Cobham plc, Cobra Dane, Coherer, Collinear antenna array, Collinearity, Colloidal crystal, Columbia Island (New York), Columbia Park, Torrance, California, COM DEV International, Comcentre, Command guidance, Common emitter, Communication Moon Relay, Communication with submarines, Communications satellite, Communications system, Communications-based train control, Communicator (Star Trek), Community Home Entertainment, Comparison of 802.15.4 radio modules, Computational electromagnetics, Conformal antenna, Conformance testing, Conical scanning, Connexion by Boeing, Constant false alarm rate, Constantine A. Balanis, Construction of the World Trade Center, Contest logging software, Contesting, Contesting technology, Copper conductor, Copper-clad steel, Cordless telephone, Corona ring, COST Hata model, Cotehill railway station, Counterpoise (ground system), Coverage map, Crossed field antenna, Crosstrees, Crowsley Park, CryoSat-2, Crystal radio, CTV Television Network, CTV Two, Cuac FM, Curtain array, Cutoff frequency, Dalek variants, DAMP Project, Dark (broadcasting), David Rutledge (engineer), Day of Defeat, De Havilland Mosquito, Decibel, Defense Satellite Communications System, Degrees of freedom (mechanics), Delay line memory, DeLorean DMC-12, Desensitization (telecommunications), Desiccation, Deutscher Fernsehfunk, Dielectric resonator, Dielectric resonator antenna, Digital channel election, Digital selective calling, Diogenes Angelakos, Dipole antenna, Dipole field strength in free space, Direct-conversion receiver, Directed-energy weapon, Direction finding, Directional antenna, Directivity, DIRECTV blimp, Discone antenna, Discovery One, Discrete-time beamforming, Disney Research, Distant Early Warning Line, Distributed antenna system, Distributed element circuit, Distributed element filter, DIT School of Electrical & Electronic Engineering, Dobrich TV Tower, Domžale, Dominion Radio Astrophysical Observatory, Double Island Point Light, Downtown Phoenix, Dream Satellite TV, DubaiSat-1, Dummy load, Duplexer, Durris transmitting station, DX-pedition, E-plane and H-plane, E-VSB, Earth battery, Earthing system, Ebino VLF transmitter, Edgar Gilbert, Educational Broadband Service, Effective height, Egli model, Eiffel Tower, Eiffel Tower in popular culture, Eilvese transmitter, Ekran, Electric current, Electric-field integral equation, Electrical impedance, Electrical resonance, Electrically small antenna, Electrodeless lamp, Electromagnetic attack, Electromagnetic coil, Electromagnetic pulse, Electromagnetic radiation, Electromagnetic radiation and health, Electromagnetic reverberation chamber, Electromagnetic spectrum, Electronic component, Electronic symbol, Electronics Corporation of India Limited, Eli Yablonovitch, Elta Systems, EMF measurement, Empire State Building, Energy harvesting, ENOS Rescue-System, Enrique Telémaco Susini, Entrance facility, Environmental monitoring, Environmental Science Services Administration, Eric Cole, Ericsson Mobile Communications, Ericsson R290, Ericsson R310s, Erinaceusyllis, Erinaceusyllis cirripapillata, Erinaceusyllis ettiennei, EUREF Permanent Network, Eureka, Nunavut, Evanescent field, Evolved antenna, Explorer 1, Explorer 3, Explorer 38, Explorer 43, Explorer 45, Explorer 50, Explorer 60, ExpressCard, Extension cord, Extremely low frequency, Fading, Faraday cage, Fatigue (material), Fawwaz T. Ulaby, Feba Radio, Fee-for-carriage, Feed line, Feeder line (network), Feldberg (Black Forest), Ferdinand Feichtner, Fernmeldeturm Berlin, Fiberglass, Fibre satellite distribution, Field Day (amateur radio), Filter (signal processing), Finite-difference time-domain method, Five College Radio Astronomy Observatory, Florianturm, Flutter (electronics and communication), FM (No Static at All), FM broadcast band, Ford Falcon (BA), Fort de Kock, Fort Ward (Washington), Fortress of São João Baptista (Angra do Heroísmo), Foster's reactance theorem, Four Lanes, Fractal antenna, Fraunhofer distance, Fred Judd, Fremont Point transmitting station, Frenching (automobile), Frequency selective surface, Fresnel zone antenna, Friis transmission equation, Funkabwehr, Gain (electronics), Gakken EX-System, Galileo (spacecraft), Gateway Arch, General Packet Radio Service, Georg von Arco, George Harold Brown, George V. Eleftheriades, Georgia Tech Research Institute, Geosynchronous satellite, Gerard J. Foschini, Gin pole, Gizmotchy, GL Mk. I radar, Global horizontal sounding technique, Glossary of electrical and electronics engineering, GoldenEye 007 (1997 video game), Goldschmidt alternator, Goldstone Deep Space Communications Complex, Goubau line, GPS aircraft tracking, GPS puck, Grand Junction, Tennessee, Grant Building, Grasshopper (robot weather station), GRE (company), Great Dun Fell, Green Bay Harbor Entrance Light, Green flash, Greenleaf Whittier Pickard, Grid dip oscillator, Grigoriopol transmitter, Grimeton Radio Station, Ground (electricity), Ground dipole, Ground plane, Ground-level power supply, Ground-penetrating radar, GSM, GTRI Advanced Concepts Laboratory, GTRI Sensors and Electromagnetic Applications Laboratory, Guy-wire, Guyed mast, H2S (radar), HAARP (album), Haiku Valley, Half-power point, Halo antenna, Hamid Jafarkhani, Hannington transmitting station, Hannover Fairground, Hardware Trojan, Harold A. Zahl, Harold Alden Wheeler, Harris Corporation, Hata model, HCT Co., Ltd., HD Radio, Headend in the Sky, Hearing aid, Heathfield transmitting station, Height above ground level, Heinrich Hertz, Heinz Kaminski, Helical antenna, Helicon double-layer thruster, Helix building, Henry Margenau, Henschel Hs 129, Heusweiler radio transmitter, Hexaflake, HFSS, High frequency, High Frequency Active Auroral Research Program, High voltage, High-capacity data radio, High-frequency direction finding, High-intensity radiated field, High-speed multimedia radio, HIPAS Observatory, History of personal computers, History of radar, History of Rugby, Warwickshire, History of submarines, History of the Tesla coil, HMS Exeter (68), HMS Starfish (1895), Holden Caprice (VQ), Holden Commodore (VN), Hooiberg, Horizontal plane, Horn antenna, Houlton, Maine, HTC Universal, Humbucker, Hurricane Frederic, Hurricane Janet, Hy-Gain Antennas and Rotators, Hybrid coil, Ici Radio-Canada Télé, IEEE Antennas & Propagation Society, IEEE Antennas and Wireless Propagation Letters, IEEE Transactions on Antennas and Propagation, ILC Dover, Image antenna, Impedance bridging, Impedance matching, Improvised firearm, Index of electrical engineering articles, Index of electronics articles, Index of radiation articles, Indian Americans, Indian Deep Space Network, Indoor antenna, Indosiar Television Tower, Inductive coupling, Input impedance, Instrument landing system, Insulator (electricity), Integrated topside design, Intelsat 24, Intelsat IV F-3, Intelsat IVA F-1, Intelsat IVA F-2, Intelsat IVA F-3, Intelsat IVA F-4, Intelsat IVA F-5, Intelsat IVA F-6, Intensity interferometer, Intercarrier method, Interferometric synthetic-aperture radar, Intermediate-field region, International Cospas-Sarsat Programme, International Space Station, Invention of radio, Inverse synthetic-aperture radar, Inversion (meteorology), Inverted vee antenna, Inverted-F antenna, Ion thruster, Ionospheric heater, IPhone, IRT Flushing Line, Ismaning radio transmitter, Isotron, Isotropic radiator, Isotropy, ITV Wales & West, J-pole antenna, James Clerk Maxwell Telescope, Japanese aircraft carrier Amagi, Japanese aircraft carrier Katsuragi, Japanese aircraft carrier Unryū, JenTower, Jicamarca Radio Observatory, Jim Creek Naval Radio Station, JJY, Joffrey Tower, John Berkey, John D. Kraus, John D. Lawson (scientist), John Francis Mitchell, John Stone Stone, Junglinster Longwave Transmitter, Juno (spacecraft), JY-8 Radar, JY-9 Radar, K-UTE, Kabal (Mortal Kombat), Karl Guthe Jansky, KATV tower, Kármán vortex street, Königs Wusterhausen Central Tower, Königs Wusterhausen radio transmitter, KCBQ, KCMP, KDAV, KDGE, Kennesaw Mountain, KESU-LP (defunct), KETV, Kirk o'Shotts transmitting station, Kiruna Station, Kisandol, Kitzbüheler Horn Transmitter, KKOL (AM), KMSP-TV, KMTX (FM), KNND, KOBR, KORB, KORN-FM, Kosmonavt Yuriy Gagarin, KRAI-FM, Krasny Bor transmitter, KRLQ, KTUL, KTVO-TV Tower, Kuala Lumpur Tower, Kustom (cars), KYDQ, Lafayette transmitter, Lahti longwave transmitter, Lake Placid, Florida, Langenberg transmission tower, Late-May 2010 tornado outbreak, Lattice tower, Launch and Early Orbit phase, Leaky feeder, Leonard Lewin (telecommunications engineer), Lester Picker, Levent Gürel, Lexington-class aircraft carrier, Lexus LS, Linda Katehi, Linda M. Godwin, Lindsay Building, Line source, Line-of-sight propagation, Linienzugbeeinflussung, List of astronomy acronyms, List of Atlanta broadcast stations by location, List of auto parts, List of balloon uses, List of buildings and structures in Switzerland above 3000 m, List of electrical engineers, List of free-to-air channels in New Zealand, List of IEEE milestones, List of International Space Station spacewalks, List of Kipper episodes, List of loanwords in Tagalog, List of Mad episodes, List of Marconi wireless stations, List of Mil Mi-24 variants, List of Mystery Hunters episodes, List of Power Rangers Ninja Steel characters, List of radars, List of Radioskugga episodes, List of Southern Methodist University people, List of spacewalks 2000–2014, List of tallest buildings and structures, List of tallest buildings and structures in Leicester, List of tallest buildings in Adelaide, List of tallest buildings in Africa, List of tallest buildings in Cairns, List of tallest buildings in Canberra, List of tallest buildings in Chatswood, List of tallest buildings in Darwin, List of tallest buildings in Hobart, List of tallest buildings in Lithuania, List of tallest buildings in Montreal, List of tallest buildings in New York City, List of tallest buildings in Parramatta, List of tallest buildings in Perth, List of tallest buildings in Townsville, List of tallest buildings in Wellington, List of tallest buildings in Wollongong, List of tallest buildings on the Gold Coast, List of tallest structures – 400 to 500 metres, List of tallest structures in Canada, List of tallest structures in Serbia, List of United States Marine Corps acronyms and expressions, List of United States tornadoes in April 2015, List of World War II British naval radar, Llanddona transmitting station, Lloyd in Space, Loading coil, Lobe switching, Lockheed AC-130, Log-periodic antenna, Long Range Desert Group, Longwave transmitter Europe 1, Loop antenna, LORAN-C transmitter Carolina Beach, LORAN-C transmitter Johnston Island, Lorenz beam, Low-frequency radio range, Low-noise amplifier, Low-noise block downconverter, LPD433, Luna 3, Lunar Orbital Station, Lunokhod 1, M-1956 Load-Carrying Equipment, M. V. Lomonosov School of Electrotechnics and Electronics, Macchi C.202, Macquarie Sports Radio 882, MagBeam, Magnetic current, Magnetic detector, Magnetic resonance force microscopy, Main lobe, Mainflingen transmitter, Malabar Radio Station, Malargüe Station, Marconi's law, Maria Arredondo, Marine radar, Marine VHF radio, Mariner 2, Marisat, Maritime Vsat, Marker beacon, Mars Exploration Rover, Mars Outpost, Mars Science Laboratory, Martin Sweeting, Martin/General Dynamics RB-57F Canberra, Marvin Middlemark, Maspalomas Station, Mast (sailing), Mast radiator, Mathematics of radio engineering, Maunsell Forts, Maximum power transfer theorem, Mühlacker radio transmitter, MEASAT Satellite Systems, Measuring instrument, Mech radar, Mechanical floor, Media of Transnistria, Medical imaging, Medicina, Medicina Radio Observatory, Melbourne Central Shopping Centre, Mendip transmitting station, Merchandise Mart, Merkur Tower, Metamaterial, Metamaterial antenna, Metamaterial cloaking, Metamaterials: Physics and Engineering Explorations, Microstrip antenna, Microwave, Microwave antenna, Microwave engineering, Microwave imaging, Microwave oven, Microwave transmission, Midhurst transmitting station, Minority Report (TV series), Mir, Mirage of astronomical objects, MIT Radiation Laboratory, Mitsubishi Eclipse, MiWi, Mobile phone signal, Mobile telephony in Africa, Modular smartphone, Mohamed Sanad, Momentum (electromagnetic simulator), Monopole antenna, Mont Caro, Moog synthesizer, Morse code abbreviations, Motala longwave transmitter, Motorola Canopy, Motorola Defy, Motorola E770, Motorola International 3200, Mount Agou, Mount Fuji Radar System, Mount Washington (New Hampshire), Mountain Cablevision, Movitel, SA, MPH (ATSC), Mr. Bean Goes to Town, Multichannel Multipoint Distribution Service, Multilateration, Multipath propagation, Murchison Radio-astronomy Observatory, Murchison Widefield Array, MV Joyita, My Monster Secret, MythBusters (2003 season), N-class blimp, Nader Engheta, Nançay radio telescope, Nanophotonics, National Centre for Radio Astrophysics, National Telecommunication Corporation (Pakistan), Naval Radio Transmitter Facility (NRTF) Niscemi, Naval Station Ernesto Ogbinar, Naval Station Sangley Point, Navigation, Navini Networks, Near and far field, Near-field electromagnetic ranging, Negative resistance, Netgear Digital Entertainer, Neurostimulation, New River Gorge Bridge, Newnham, Northamptonshire, Nick Berg, Nikola Tesla electric car hoax, Nimbus 1, Nimbus 2, Nimbus 3, Nimbus 4, Nimbus 7, Nippon Light Metal, No. 101 Squadron RAF, No. 123 Signals Unit RAF, Node (physics), Noise (electronics), Noise (radio), Noise (video), Noise power, Nokia 9210 Communicator, Nominal impedance, Non-directional beacon, Non-line-of-sight propagation, Norsat, Northrop Grumman E-2 Hawkeye, Noto Radio Observatory, November 1992 tornado outbreak, NTP, Inc., NTSC, Nuclear blackout, Null (physics), Null (radio), Null fill, Numerical Electromagnetics Code, Observation Tower Ahlbeck, Occupations in electrical/electronics engineering, Off-air pickup, Oiz, Okanagan Falls, Okumura model, OLPC XS, Omnidirectional antenna, One Shell Plaza, OneWeb satellite constellation, Operation Bulldog III, Operation Goodwood (naval), Operation Tracer, Optical heterodyne detection, Optical rectenna, Orange Harvest, Orbita (TV system), Oriental Pearl Tower, Orthomode transducer, Ostankino Tower, Outline of radio, Outline of radio science, Outline of television broadcasting, Output power of an analog TV transmitter, Over-the-air, P-10 radar, P-12 radar, P-14 radar, P-15 radar, P-18 radar, P-19 radar, P-3 radar, P-30 radar, P-35 radar, P-8 radar, P-Com, Packet radio, Palatine Transmitter, Panorama Antennas, Parabolic antenna, Paraboloid, Parani, Paris Observatory, Passive radar, Passive radiator, Patch antenna, Patscherkofel Transmitter, Paulista Avenue, Peak envelope power, Pelican Butte, Pentagrid converter, Periscope antenna, Personal luxury car, Personal RF safety monitors, Peter P. Silvester, Phase center, Phase shift module, Phased array, Physical plant, Pie Town, New Mexico, Pigeon racing, Piloting (navigation), Pioneer 6, 7, 8, and 9, Pioneer plaque, Pioneer Venus Orbiter, Pirate radio in North America, Plan position indicator, Planar array, Planar array radar, Planar transmission line, Plane wave, Planes (film), Planning permission, Plasma antenna, Plenty River Trail, Plot (graphics), Point source, Polar coordinate system, Polarization, Polarization (waves), Polarization-division multiple access, Pontop Pike transmitting station, Pop-up satellite archival tag, Porcelain, Porthcurno, Potential applications of carbon nanotubes, Powerwave Technologies, Preamplifier, Preselector, Pro Electron, Product certification, Professional mobile radio, Program test authority, Project Kahu, Project Loon, Project Mercury, Project Sanguine, Proximity fuze, Prudential, Warsaw, Pseudoelasticity, Puigsou, Pukara of La Compañía, Pulse-Doppler signal processing, Pulsed radiofrequency, Pumpkin bomb, QMA and QN connector, QRP operation, Quad antenna, Quantum Quest: A Cassini Space Odyssey, Quezon, Isabela, Radar, Radar engineering details, Radar in World War II, Radar Station, Charlie's Hill, Radial (radio), Radiant intensity, Radiation pattern, Radiation resistance, Radio, Radio astronomy, Radio broadcasting, Radio channel emulator, Radio City (pirate radio station), Radio direction finder, Radio France Internationale, Radio frequency power transmission, Radio Frequency Systems, Radio Ice Cherenkov Experiment, Radio masts and towers, Radio modem, Radio Moscow, Radio receiver, Radio receiver design, Radio science subsystem, Radio station, Radio telescope, Radio transmitter design, Radio wave, Radio-frequency engineering, Radio-frequency identification, Radio-frequency induction, Radioglaciology, Radome, RAF Chicksands, RAF Defford, Rakhesh Singh Kshetrimayum, Ramona passive sensor, Random wire antenna, Ranger 2, Rayleigh distance, Reacher Satellite Ground Terminal, Realtor transmitter, Reciprocity (electromagnetism), Reconfigurable antenna, Rectenna, Rectifier, Redruth transmitting station, Redu Station, Reference antenna, Reference designator, Reference distance, Reflecting telescope, Reflective array antenna, Reflector (antenna), Remote base station, Reradiation, Resistive opto-isolator, Resolver (electrical), Retrodirectivity, RF front end, RF microwave CAE CAD, RF module, RF power amplifier, RFID on metal, Rheinsender, Rhombic antenna, Rialto Towers, Ribbon cable, Ringaround, Riometer, RIZ (company), Roaming, Robert E. Collin, Robert E. Finnigan, Robert Helliwell, Robinsons Equitable Tower, Robinsons Summit Center, Robita, Robot Building, Robot Odyssey, Rodolfo Neri Vela, Rohn Industries, Ronold W. P. King, Rose-Hulman Institute of Technology, Royal Little, Rundfunk der DDR, Ruselectronics, S-75 Dvina, Sail (submarine), Salt Lake City, Samsung SGH-T729, Samuel Rabinovich, Santa Matilde, Saorview, Sarantel, Satellite bus, Satellite dish, Satellite flare, Satellite Home Viewer Act, Satellite Internet access, Satellite phone, Satellite television by region, Saturn V Instrument Unit, Scaled Composites Tier One, Scanner (radio), Scimitar antenna, Scott E. Parazynski, SCR-197, SCR-203, SCR-68, Sea ice concentration, Sea interferometry, Seasat, Second Gulf of Sidra offensive, Sector antenna, Selkirk transmitting station, Sender Inselsberg, Sender Zehlendorf, Senior Road Tower, Sensor node, Sensor web, Sergei Alexander Schelkunoff, Serra de Sant Pere, Set-top box, Shadow of Fear, SHARAD, Shoemaker (lunar crater), Shoreview, Minnesota, Short backfire antenna, Shortwave broadband antenna, Shortwave broadcasting in the United States, Shortwave listening, Shortwave radio, Shortwave radio receiver, Shortwave relay station, Shunt (electrical), Siae Microelettronica, Side lobe, Single operator two radios, Single-input single-output system, Sitkūnai Radio Station, Skew (antenna), Slant range, Slot antenna, Slotted line, Slotted waveguide, Smart antenna, Smart key, Smart label, Software-defined radio, Solrad 10, Sony Ericsson K750, Sony Ericsson K770, Sottens transmitter, Soyuz MS, Space fountain, Space science in Estonia, Space segment, Space tribology, Space-based radar, Space-division multiple access, Space–time block code, Space–time code, Space–time trellis code, Spacecraft design, Span (engineering), Spatial multiplexing gain, Special-use permit, Specialized Mobile Radio, Spectral estimation of multidimensional signals, Spektr-R, Spiral antenna, Split sound system, Spoofing attack, Sprue (manufacturing), Square Kilometre Array, Squarial, SS Georgia, SS Irish Willow (1918), St Hilary transmitting station, Stadelheim Transmitter, Stairs, Standing wave ratio, Starshel, Starwisp, State Administration of Radio and Television, Stockholm metro, Storm, Strabane transmitting station, Strain insulator, Strait of Juan de Fuca laser incident, STS-119, STS-120, STS-128, STS-88, Stub (electronics), Studio/transmitter link, Submarine navigation, Sudbury transmitting station, SunTrust Plaza, Super high frequency, Super low frequency, Superheterodyne receiver, Swayam, Sweat Mountain, Swingate transmitting station, SWR meter, Synchro, Synchrotron radiation, T-antenna, Tablo (DVR), Tacolneston transmitting station, Tactical Vest Antenna System, Takis, Tamura, Fukushima, Targeting tower, TasWireless, Tavolara Island, Technical Research Ship Special COMMunications, Technical surveillance counter-measures, Tegel, Telecommunication, Telecommunications cable, Telecommunications engineering, Telemetry, Telescope, Teletubbies, Television antenna, Television in Japan, Television licensing in the Republic of Ireland, Television standards conversion, Television station, Television transmitter, Telluric current, Ten rays model, Terahertz spectroscopy and technology, Terminal Tower, TerraSAR-X, Thales Group, The Colony (U.S. season 1), The Delicious One, The Moth (Lost), The Open University of Japan, The Oregonian Building, The Thing (listening device), The Tripods, The Wrekin transmitting station, Theory, Theremin, Thermoacoustic imaging, Thinned-array curse, Through-the-earth mine communications, Time stretch analog-to-digital converter, Timeline of Rosetta spacecraft, Timeline of the Carnation Revolution, Tingye Li, TIROS-10, TIROS-5, TIROS-6, Title 47 CFR Part 15, Tokyo Skytree, Top (sailing ship), TOPEX/Poseidon, Tor Hagfors, Tornado outbreak of April 8–9, 2015, Tornado outbreak of January 21–23, 1999, Toruń Centre for Astronomy, Total active reflection coefficient, Touchscreen, Transducer, Transition-edge sensor, Transmission line, Transmission medium, Transmit and receive integrated assembly, Transmitter, Transmitter Hamburg-Billstedt, Transmitter Heilsberg, Transmitter hunting, Transmitter power output, Transmitter station, Transposed excitation, Transposer, Transverter, Traveling-wave antenna, Traveling-wave tube, Treo 700p, Treo 755p, Tribal-class frigate, Triumph Group, Trump International Hotel and Tower (Chicago), Trunnion, Tsada, TTI, Inc., Tunable metamaterial, Tuner (radio), Tupolev Tu-142, Turbinlite, Turnstile antenna, Turtles Can Fly, TV and FM DX, TVA (Canada), TVOntario, Twin-lead, Two capacitor paradox, Two-ray ground-reflection model, Two-way radio, Type 517 Radar, Type 97 Chi-Ha medium tank, U Television, U.S. Naval Radio Facility Bagobantay, Ultra high frequency, Unconventional warfare (United States Department of Defense doctrine), United States Army air defense, United States Naval Observatory, University of Tehran, Unmanned aerial vehicle, Upfade, Urocaridella renatekhalafae, USS Haverfield (DE-393), USS Lexington (CV-2), USS Oyster Bay (AGP-6), USS Parche (SSN-683), USS Richard B. Russell (SSN-687), USS Santee (CVE-29), USS Saratoga (CV-3), USS Tabberer, USS Tunny (SS-282), USS Valcour (AVP-55), V (TV network), Vanguard 1, Vanguard TV0, Vanguard TV3, Variable capacitor, Variable-frequency oscillator, Vector inversion generator, Ventus (wireless company), Vertical stabilizer, Very Long Baseline Array, Very-small-aperture terminal, Vesnin brothers, Victor H. Rumsey, Video over cellular, Vijayanarayanam, Villa Las Estrellas, Visibility graph, Vivaldi antenna, W250BC, W255CJ, WABY (AM), WAEZ, Waffle-iron filter, WAFS (AM), WAGX, Walkie-talkie, Walter Rotman, WAOS, War of the Monsters, Wardriving, WARM (AM), Warsaw radio mast, Washington State Patrol, Wave propagation, Waveguide (electromagnetism), WAZL, WAZX (AM), WBAM-FM, WBFY-LP, WCDL, WCES-TV, WDET-FM, WDUN (AM), WDZH, Weber bar, WECT tower, Weltron, Wenvoe transmitting station, West Island, Cocos (Keeling) Islands, Westerbork Synthesis Radio Telescope, Westin Peachtree Plaza Hotel, WEZC, WGFA-FM, WGFS, WGHR (college radio), WGPB, WGRM (AM), WHCA Roadrunner, Whip antenna, Whisker (metallurgy), WHOW, WHTA, WHUS, WHZN, WIBT, Wideband, Willis Tower, Willo the Wisp, WIND (spacecraft), Wind profiler, Window function, Winter Hill transmitting station, WIRE-CD, Wireless, Wireless access point, Wireless home phone, Wireless intrusion prevention system, Wireless Leiden, Wireless local loop, Wireless network interface controller, Wireless power transfer, Wireless sensor network, Wireless telegraphy, Wireless Thessaloniki, WITI TV Tower, WJIE-FM, WJKN-FM, WJR, WJSP-TV, WKXQ (defunct), WKZN, WLFJ-FM, WLTA, WMPZ, WMUA, WNCC (FM), WNIV, WokFi, World Radiosport Team Championship, World Trade Center in popular culture, WORW, WPBA (TV), WPBS (AM), WPLO, WPWX, WPYK, WREB, WREK, WREL (technology), WSB-FM, WSDM (FM), WSKC-CD, WSRV, WSTR (FM), WTBS-LD, WTCY, WTJH, WTVN, WTZA, Wuhan World Trade Tower, Wullenweber, WUVG-DT, WVEE, WVUM, WVVS-FM, WWDP, WWDV, WWPW, WWRB, WWSZ, WWV (radio station), WWVB, WYTJ, WYZE, WZIS-FM, WZMF, XAF radar, XFM Manchester, Yagi–Uda antenna, Yahya Rahmat-Samii, YLC-15 Radar, Yosami Transmitting Station, Yuri (satellite), Zarya (antenna), Zorica Pantić, 1000 de La Gauchetière, 108 St Georges Terrace, 1250 René-Lévesque, 15-meter band, 160-meter band, 1801 California Street, 1950s American automobile culture, 1985 Mexico City earthquake, 1worldspace, 2-Headed Shark Attack, 2007 in spaceflight, 2015 Esperance bushfires, 2200-meter band, 33-centimeter band, 3803 KM, 5G, 60-meter band. Expand index (1566 more) » « Shrink index

ACP 131

ACP-131 is the controlling publication for the listing of Q codes and Z codes.

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Acronyms and abbreviations in avionics

This is a list of the acronyms and abbreviations used in avionics.

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Across the Universe

"Across the Universe" is a song recorded by the Beatles.

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Active antenna

An active antenna is an antenna that contains active electronic components such as transistors, as opposed to most antennas which only consist of passive components such as metal rods, capacitors and inductors.

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Active structure

An active structure (also known as a smart or adaptive structure) is a mechanical structure with the ability to alter its configuration, form or properties in response to changes in the environment.

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Adcock antenna

The Adcock antenna is an antenna array consisting of four equidistant vertical elements which can be used to transmit or receive directional radio waves.

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Additionally guyed tower

An additionally guyed tower is a free-standing tower, which is also additionally guyed.

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Advanced Civil Speed Enforcement System

Advanced Civil Speed Enforcement System (ACSES) is a positive train control cab signaling system developed by Alstom.

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Aerial

Aerial may refer to.

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AGM-28 Hound Dog

The North American Aviation AGM-28 Hound Dog was a supersonic, turbojet-propelled, air-launched cruise missile developed in 1959 for the United States Air Force.

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Air traffic control radar beacon system

The air traffic control radar beacon system (ATCRBS) is a system used in air traffic control (ATC) to enhance surveillance radar monitoring and separation of air traffic.

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Airborne Interception radar

Airborne Interception radar, or AI for short, is the British term for radar systems used to equip aircraft in the air-to-air role.

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Airchain

In broadcast engineering for radio or television, the airchain or transmission chain (UK) (sometimes air chain (US) or just chain (UK)) is the path or route an audio or video signal takes on its way through a radio station or television station.

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Akash Mitra Mandal

Akashmitra Mandal is an amateur astronomers' organization (Regd.No. MAH/557/96/Thane) in India.

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Al-Manar

Al-Manar (Arabic:المنار al-Manār;English: the beacon) is a Lebanese satellite television station affiliated with Hezbollah, 21 November 2008, Ya Libnan broadcasting from Beirut, Lebanon.

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Alan Ford (comics)

Alan Ford is an Italian comic book created by Max Bunker (Luciano Secchi) and Magnus (Roberto Raviola), in print since 1969.

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Alexander Meissner

Alexander Meissner (in German: Alexander Meißner) (September 14, 1883 – January 3, 1958) was Austrian engineer and physicist.

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Alexander Stepanovich Popov

Alexander Stepanovich Popov (sometimes spelled Popoff; Алекса́ндр Степа́нович Попо́в; –) was a Russian physicist who is acclaimed in his homeland and some eastern European countries as the inventor of radio.

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Allen B. DuMont

Allen Balcom DuMont, also spelled Du Mont, (January 29, 1901 – November 14, 1965) was an American electronics engineer, scientist and inventor best known for improvements to the cathode ray tube in 1931 for use in television receivers.

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Allen Telescope Array

The Allen Telescope Array (ATA), formerly known as the One Hectare Telescope (1hT), is a radio telescope array dedicated to astronomical observations and a simultaneous search for extraterrestrial intelligence (SETI).

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ALLISS

ALLISS is a fully rotatable antenna system for high power shortwave radio broadcasting in the 6 MHz to 26 MHz range.

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ALSE

The ALSE (Apollo Lunar Sounder Experiment) (also known as Scientific Experiment S-209, according to NASA designations) was a ground-penetrating radar (subsurface sounder) experiment that flew on the Apollo 17 mission.

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Altazimuth mount

An altazimuth or alt-azimuth mount is a simple two-axis mount for supporting and rotating an instrument about two perpendicular axes – one vertical and the other horizontal.

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AM stereo

AM stereo is a term given to a series of mutually incompatible techniques for radio broadcasting stereo audio in the AM band in a manner that is compatible with standard AM receivers.

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Amateur radio direction finding

Amateur radio direction finding (ARDF, also known as radio orienteering and radiosport) is an amateur racing sport that combines radio direction finding with the map and compass skills of orienteering.

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Amateur radio station

An amateur radio station is a radio station designed to provide radiocommunications in the amateur radio service for an amateur radio operator.

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Ambassador Magma

is the title and protagonist of a manga and tokusatsu TV series created by Osamu Tezuka, the writer of Mighty Atom (Astro Boy in English) and Jungle Emperor (Kimba the White Lion in English).

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Ambient backscatter

Ambient backscatter uses existing radio frequency signals, such as radio, television and mobile telephony, to transmit data without a battery or power grid connection.

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Amelia Earhart

Amelia Mary Earhart (born July 24, 1897; disappeared July 2, 1937) was an American aviation pioneer and author.

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Ames Laboratory

Ames Laboratory is a United States Department of Energy national laboratory located in Ames, Iowa and affiliated with Iowa State University.

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Amos (satellite)

Amos is a series of Israeli communications satellites.

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Amos-2

AMOS-2 is an Israeli commercial communication satellite, part of the AMOS series of satellites.

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AN/APG-66

The AN/APG-66 radar is a solid state medium range (up to 150 km) Pulse-doppler planar array radar originally designed by the Westinghouse Electric Corporation (now Northrop Grumman) for use in the F-16 Fighting Falcon.

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AN/APG-68

The AN/APG-68 radar is a long range (up to 296 km) Pulse-doppler radar designed by Westinghouse (now Northrop Grumman) to replace AN/APG-66 radar in the F-16 Fighting Falcon.

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AN/APQ-181

The AN/APQ-181 is an all-weather, low probability of intercept (LPI) radar system designed by Hughes Aircraft (now Raytheon) for the U.S. Air Force B-2A Spirit bomber aircraft.

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AN/FLR-9

The AN/FLR-9 is a type of very large circular "Wullenweber" antenna array, built at eight locations during the cold war for HF/DF direction finding of high priority targets.

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AN/FRD-10

The AN/FRD-10 Circularly Disposed Antenna Array (CDAA) was a United States Navy circular "Wullenweber" antenna array, built at a number of locations during the cold war for high frequency radio direction finding (HF/DF) and signals intelligence.

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AN/MPQ-64 Sentinel

The AN/MPQ-64 Sentinel is a 3D radar used to alert and queue Short Range Air Defense (SHORAD) weapons to the locations of hostile targets approaching their front line forces.

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AN/PRC-117F

The AN/PRC-117F/G Multiband Manpack Radio, or Multiband Multi Mission Radio (MBMMR), is a man-portable, tactical software-defined combat-net radio covering the 30-2000 MHz frequency range.

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AN/PRC-152

The AN/PRC-152 Multiband Handheld Radio (Harris Falcon III) is a portable, compact, tactical software-defined combat-net radio manufactured by Harris Corporation.

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AN/SPS-43

The AN/SPS-43 was a long-range air-search United States Navy radar system introduced in March 1961 that had a range of 500+ km.

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AN/TPQ-36 Firefinder radar

Hughes AN/TPQ-36 Firefinder Weapon Locating System is a mobile radar system developed by Hughes Aircraft Company and manufactured by Northrop Grumman and ThalesRaytheonSystems.

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AN/TPS-58

AN/TPS-58 Moving-Target-Locating Radar (MTLR) is a vehicle-mounted radar set used by the United States Army for general surveillance and artillery burst detection.

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AN/TRC-97

The AN/TRC-97 Radio Set, or TRC-97, is a radio set that has 12 multiplex channels and 16 telegraph channels connected to an analog radio.

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Anechoic chamber

An anechoic chamber (an-echoic meaning "non-reflective, non-echoing, echo-free") is a room designed to completely absorb reflections of either sound or electromagnetic waves.

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Antenna

Antenna (pl. antennas or antennae) may refer to.

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Antenna amplifier

In electronics, an antenna amplifier (also: aerial eamplifier (booster), Am antennefier) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance.

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Antenna analyzer

An antenna analyzer or in British aerial analyser (also known as a noise bridge, RX bridge, SWR analyzer, or RF analyzer) is a device used for measuring the input impedance of antenna systems in radio electronics applications.

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Antenna aperture

In electromagnetics and antenna theory, antenna aperture, effective area, or receiving cross section, is a measure of how effective an antenna is at receiving the power of electromagnetic radiation (such as radio waves).

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Antenna array

An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves.

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Antenna blind cone

In telecommunications, antenna blind cone (sometimes called a cone of silence or antenna blind spot) is the volume of space, usually approximately conical with its vertex at the antenna, that cannot be scanned by an antenna because of limitations of the antenna radiation pattern and mount.

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Antenna boresight

In telecommunications and radar engineering, antenna boresight is the axis of maximum gain (maximum radiated power) of a directional antenna.

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Antenna diversity

Antenna diversity, also known as space diversity or spatial diversity, is any one of several wireless diversity schemes that uses two or more antennas to improve the quality and reliability of a wireless link.

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Antenna effect

The antenna effect, more formally plasma induced gate oxide damage, is an effect that can potentially cause yield and reliability problems during the manufacture of MOS integrated circuits.

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Antenna efficiency

In antenna theory, antenna efficiency is most often used to mean radiation efficiency.

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Antenna equivalent radius

The equivalent radius of an antenna conductor is defined as: r_e.

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Antenna factor

In electromagnetics, the antenna factor is defined as the ratio of the electric field strength to the voltage V (units: V or µV) induced across the terminals of an antenna.

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Antenna feed

In telecommunications and electronics, an antenna feed refers to the components of an antenna which feed the radio waves to the rest of the antenna structure, or in receiving antennas collect the incoming radio waves, convert them to electric currents and transmit them to the receiver.

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Antenna gain

In electromagnetics, an antenna's power gain or simply gain is a key performance number which combines the antenna's directivity and electrical efficiency.

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Antenna gain-to-noise-temperature

Antenna gain-to-noise-temperature (G/T) is a figure of merit in the characterization of antenna performance, where G is the antenna gain in decibels at the receive frequency, and T is the equivalent noise temperature of the receiving system in kelvins.

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Antenna interface standards group

The Antenna Interface Standards Group (commonly referred to as AISG) is a non-profit international consortium formed by collaboration between communication infrastructure manufacturers and network operators with the purpose of maintaining and developing a standard for digital remote control and monitoring of antenna line devices in the wireless industry.

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Antenna Man (Nordgulen)

Antenna Man, a public sculpture by Eric Nordgulen, is located on the west side of the Herron School of Art and Design, which is on the Indiana University-Purdue University Indianapolis campus in Indianapolis, Indiana.

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Antenna measurement

Antenna measurement techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it.

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Antenna Measurement Techniques Association

The Antenna Measurement Techniques Association (AMTA) is a non-profit professional organization for members involved in research and development of antenna and radar-scattering measurements.

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Antenna noise temperature

In telecommunication, antenna noise temperature is the temperature of a hypothetical resistor at the input of an ideal noise-free receiver that would generate the same output noise power per unit bandwidth as that at the antenna output at a specified frequency.

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Antenna rotator

An antenna rotator is a device used to change the orientation, within the horizontal plane, of a directional antenna.

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Antenna tuner

An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline.

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Antique radio

An antique radio is a radio receiving set that is collectible because of its age and rarity.

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Antiresonance

In the physics of coupled oscillators, antiresonance, by analogy with resonance, is a pronounced minimum in the amplitude of one oscillator at a particular frequency, accompanied by a large shift in its oscillation phase.

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Antti Räisänen

Antti V. Räisänen, D.Sc.

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Aon Center (Chicago)

The Aon Center (200 East Randolph Street, formerly Amoco Building) is a modern supertall skyscraper in the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership, and completed in 1974 as the Standard Oil Building.

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AOR (company)

AOR, Ltd. (Authority on Radio Communications, Ltd.) is a Japanese based manufacturer of radio equipment, including transceivers, scanners, antennas and frequency monitors.

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Aperture-to-medium coupling loss

In telecommunication, aperture-to-medium coupling loss is the difference between the theoretical antenna gain of a very large antenna, such as the antennas in beyond-the-horizon microwave links, and the gain that can be realized in practice.

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Apex (radio band)

Apex radio stations (also known as skyscraper and pinnacle) was the name commonly given to a short-lived group of United States broadcasting stations, which were used to evaluate transmitting on frequencies that were much higher than the ones used by standard amplitude modulation (AM) and shortwave stations.

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Architecture of Hong Kong

The architecture of Hong Kong features great emphasis on Contemporary architecture, especially Modernism, Postmodernism, Functionalism, etc.

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Arfon transmitting station

The Arfon transmitting station is a facility for FM, DAB digital radio and television transmission near the villages of Nebo and Nasareth in Gwynedd, northwestern Wales.

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Ariane Passenger Payload Experiment

The Ariane Passenger PayLoad Experiment (APPLE), was an experimental communication satellite with a C-Band transponder launched by the Indian Space Research Organisation on June 19, 1981 by Ariane, a launch vehicle of the European Space Agency (ESA) from Centre Spatial Guyanais near Kourou in French Guiana.

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Ark Two Shelter

The Ark Two Shelter is a nuclear fallout shelter.

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Array factor

An array factor is a mathematical factor in the directivity equation of an array antenna.

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ASELSAN

ASELSAN A.Ş., (ASELSAN, acronym: Askeri Elektronik Sanayi, Military Electronic Industries) is a Turkish corporation that produces tactical military radios and defense electronic systems for the Turkish Armed Forces.

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Astronomical interferometer

An astronomical interferometer is an array of separate telescopes, mirror segments, or radio telescope antennas that work together as a single telescope to provide higher resolution images of astronomical objects such as stars, nebulas and galaxies by means of interferometry.

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Atacama Large Millimeter Array

The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical interferometer of radio telescopes in the Atacama Desert of northern Chile.

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Athens ERA-1 transmitter

Athens ERA-1 Transmitter is a transmission tower in Agios Stefanos, Attica, Greece.

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Atlas LV-3B

The Atlas LV-3B, Atlas D Mercury Launch Vehicle or Mercury-Atlas Launch Vehicle, was a human-rated expendable launch system used as part of the United States Project Mercury to send astronauts into low Earth orbit.

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Atmospheric electricity

Atmospheric electricity is the study of electrical charges in the Earth's atmosphere (or that of another planet).

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Attack-time delay

In telecommunications, attack-time delay is the time needed for a receiver or transmitter to respond to an incoming signal.

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Attitude control

Attitude control is controlling the orientation of an object with respect to an inertial frame of reference or another entity like the celestial sphere, certain fields, and nearby objects, etc.

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Augie Hiebert

August Gottlob "Augie" Hiebert (December 4, 1916 – September 13, 2007) was an Alaskan television executive.

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Auston switch

An Auston switch (also known as a photoconductive switch) is an optically gated antenna that is commonly used in the generation and detection of pulsed terahertz radiation.

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Australian Inland Mission Hospital, Birdsville

Australian Inland Mission Hospital is a heritage-listed former hospital at Adelaide Street, Birdsville, Shire of Diamantina, Queensland, Australia.

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Automatic dependent surveillance – broadcast

Automatic dependent surveillance — broadcast (ADS–B) is a surveillance technology in which an aircraft determines its position via satellite navigation and periodically broadcasts it, enabling it to be tracked.

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Automatic Gun-Laying Turret

The Automatic Gun-Laying Turret (AGLT) was a British radar-aimed sighting system fitted to some bomber turrets from 1944.

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Automatic meter reading

Automatic meter reading, or AMR, is the technology of automatically collecting consumption, diagnostic, and status data from water meter or energy metering devices (gas, electric) and transferring that data to a central database for billing, troubleshooting, and analyzing.

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Automatic transmission system

An automatic transmission system (or occasionally automated transmission system, to avoid confusion with the automatic transmission of an automobile) is an automated system designed to keep a radio transmitter and antenna system running without direct human oversight or attention for long periods.

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Automobile drag coefficient

The drag coefficient is a common measure in automotive design as it pertains to aerodynamics.

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Avro 730

The Avro 730 was a planned Mach 3 reconnaissance aircraft and strategic bomber that was being developed by Avro Aircraft for the Royal Air Force (RAF).

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AWX antenna

An AWX antenna is an antenna which means that it can be used for All Wave radio frequency and is shaped like X. It has two "V" shaped elements.

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Île Verte (Grenoble)

L'Île Verte is a neighborhood in Grenoble, located in a bend in the river Isère.

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Žižkov Television Tower

The Žižkov Television Tower (Žižkovský vysílač) is a unique transmitter tower built in Prague between 1985 and 1992.

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Backstay insulator

Backstay insulators, when used as a pair, are devices which allow for the electrical isolation of a section of wire on a yacht (e.g. the backstay) so that it can be used as an antenna for a single sideband (SSB) radio.

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Bad Sobernheim

Bad Sobernheim is a town in the Bad Kreuznach district in Rhineland-Palatinate, Germany.

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Baiyoke Tower II

Baiyoke Tower II (ใบหยก 2) is an 88-storey, skyscraper hotel at 222 Ratchaprarop Road in the Ratchathewi District of Bangkok, Thailand.

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Balun

A balun (for balanced to unbalanced) is an electrical device that converts between a balanced signal (two signals working against each other where ground is irrelevant) and an unbalanced signal (a single signal working against ground or pseudo-ground).

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Band expander

An FM Band Expander (band converter, fm converter) is a device used on Japanese car stereo systems to enable them to receive international FM.

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Bandwidth (signal processing)

Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.

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Barbaric Machine Clan Gaiark

The are the fictional antagonists from Engine Sentai Go-onger.

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Barrett Communications

Barrett Communications is a specialist manufacturer and supplier of commercial high frequency (HF), tactical HF and very high frequency (VHF) communications equipment.

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BASE jumping

BASE jumping, also sometimes written as B.A.S.E. jumping, is parachuting or wingsuit flying from a fixed structure or cliff.

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Base station

Base station (or base radio station) is – according to the International Telecommunication Union's (ITU) Radio Regulations (RR) – a "land station in the land mobile service." The term is used in the context of mobile telephony, wireless computer networking and other wireless communications and in land surveying.

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Base station subsystem

The base station subsystem (BSS) is the section of a traditional cellular telephone network which is responsible for handling traffic and signaling between a mobile phone and the network switching subsystem.

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Base transceiver station

A base transceiver station (BTS) is a piece of equipment that facilitates wireless communication between user equipment (UE) and a network.

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Batteryless radio

A batteryless radio is a radio receiver which does not require the use of a battery to provide it with electrical power.

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Battle of the Malacca Strait

The Battle of the Malacca Strait, sometimes called the Sinking of the Haguro, and in Japanese sources as the Battle off Penang (ペナン沖海戦), was a naval battle that resulted from the British search and destroy operation in May 1945, called Operation Dukedom, that resulted in the sinking of the Japanese cruiser.

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Batwing antenna

A batwing or super turnstile antenna is a type of broadcasting antenna used at VHF and UHF frequencies, named for its distinctive shape which resembles a bat wing or bow tie.

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Bazita Peak TV Tower

Bazita Peak TV Tower is a broadcasting tower in Zalaegerszeg, Hungary.

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BBC Two '1991–2001' idents

The BBC Two '1991–2001' idents were broadcast from 16 February 1991 until 19 November 2001, and again since 9 July 2014, on BBC Two in the United Kingdom.

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Beacon Hill transmitting station

The Beacon Hill transmitting station is an English telecommunications facility located at Beacon Hill, Marldon, Devon.

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Beacon Mountain

Beacon Mountain, locally Mount Beacon, is the highest peak of Hudson Highlands, located behind the City of Beacon, New York, in the Town of Fishkill.

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Beale Air Force Base

Beale Air Force Base (AFB) is a United States Air Force base located approximately east of Marysville, California.

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Beam park

Beam park is a radar mode used for space surveillance, particularly tracking space debris.

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Beam steering

Beam steering (also spelled beamsteering or beam-steering) is about changing the direction of the main lobe of a radiation pattern.

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Beam tilt

Beam tilt is used in radio to aim the main lobe of the vertical plane radiation pattern of an antenna below (or above) the horizontal plane.

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Beam waveguide antenna

A beam waveguide antenna is a particular type of large steerable parabolic antenna in which the radio waves are transported in a beam between the movable dish and the stationary transmitter or receiver using multiple reflective surfaces.

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Beam-powered propulsion

Beam-powered propulsion, also known as directed energy propulsion, is a class of aircraft or spacecraft propulsion that uses energy beamed to the spacecraft from a remote power plant to provide energy.

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Beamforming

Beamforming or spatial filtering is a signal processing technique used in sensor arrays for directional signal transmission or reception.

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Beamwidth

In a radio antenna pattern, the half power beam width is the angle between the half-power (-3 dB) points of the main lobe, when referenced to the peak effective radiated power of the main lobe.

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Beechcraft Model 17 Staggerwing

The Beechcraft Model 17 Staggerwing is an American biplane with an atypical negative wing stagger (the lower wing is farther forward than the upper wing), that first flew in 1932.

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Bell Internet

Bell Internet, originally and frequently still called Sympatico, is the residential Internet service provider (ISP) division of BCE Inc..

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Bell Laboratories Layered Space-Time

Bell Laboratories Layer Space-Time (BLAST) is a transceiver architecture for offering spatial multiplexing over multiple-antenna wireless communication systems.

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Bell Labs Holmdel Complex

The Bell Labs Holmdel Complex, in Holmdel Township, New Jersey, United States, functioned for forty-four years as a research and development facility, initially for the Bell System and later Bell Labs.

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Belling-Lee connector

The Belling-Lee connector (also type 9,52, but largely only in the context of its specification, IEC 61169, Part 2: Radio-frequency coaxial connector of type 9,52)IEC.

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Bellini–Tosi direction finder

A Bellini–Tosi direction finder (B–T or BTDF) is a type of radio direction finder (RDF), which determines the direction to, or ''bearing'' of, a radio transmitter.

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Ben Munk

Benedikt "Ben" Aage Munk (3 December 1929 - 13 March 2009) was professor of electrical engineering at the ElectroScience Laboratory (ESL) at The Ohio State University (OSU), Columbus, Ohio, USA.

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Bender (Futurama)

Bender Bending Rodríguez (designated in-universe as Bending Unit 22, unit number 1,729, serial number 27160571,729 is the smallest number that can be represented as the sum of two cubes in two ways, 1³ + 12³.

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Beriev A-50

The Beriev A-50 (NATO reporting name: Mainstay) is a Soviet airborne early warning and control (AEW) aircraft based on the Ilyushin Il-76 transport.

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Bermuda rig

A Bermuda rig, Bermudian rig, or Marconi rig is a configuration of mast and rigging for a type of sailboat and is the typical configuration for most modern sailboats.

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Beverage antenna

The Beverage antenna or "wave antenna" is a long-wire receiving antenna mainly used in the low frequency and medium frequency radio bands, invented by Harold H. Beverage in 1921.

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Bharat Broadband Network

BharatNet, also Bharat Broadband Network Limited, is a Telecom infrastructure provider, set up by the government of India under Telecom department for the establishment, management and operation of National Optical Fibre Network to provide a minimum of 100 Mbps broadband connectivity all 250,000 Gram panchayats in the country, covering nearly 625,000 villages, to improve telecommunications in India and reach the campaign goal of Digital India.

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Bias tee

A bias tee is a three-port network used for setting the DC bias point of some electronic components without disturbing other components.

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Biconical antenna

In radio systems, a biconical antenna is a broad-bandwidth antenna made of two roughly conical conductive objects, nearly touching at their points.

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Bishop Wilton Wold

Bishop Wilton Wold is the highest point of the Yorkshire Wolds in the East Riding of Yorkshire, England.

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Black Hill transmitting station

The Black Hill transmitting station is a facility for FM and TV broadcasting at Black Hill, on Duntilland Road, Salsburgh, North Lanarkshire, Scotland which is near the town of Airdrie.

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Bleep and Booster

Bleep and Booster is a children's cartoon series by William Timym (pronounced Tim) originally shown on the BBC's Blue Peter.

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Blosenbergturm

The Blosenbergturm is a former radio transmission tower built for the German-language radio station DRS at Beromünster in the Canton of Lucerne, Switzerland, in 1937.

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Bluetooth Low Energy

Bluetooth Low Energy (Bluetooth LE, colloquially BLE, formerly marketed as Bluetooth Smart) is a wireless personal area network technology designed and marketed by the Bluetooth Special Interest Group (Bluetooth SIG) aimed at novel applications in the healthcare, fitness, beacons, security, and home entertainment industries.

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BNC connector

The BNC (Bayonet Neill–Concelman) connector is a miniature quick connect/disconnect radio frequency connector used for coaxial cable.

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BOAC Flight 781

BOAC Flight 781 was a de Havilland Comet passenger jet operated by British Overseas Airways Corporation that on 10 January 1954 crashed into the sea near Elba Island, off the Italian coast, after suffering an explosive decompression at altitude.

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Bob Heil

Bob Heil (born October 5, 1940) is an American sound and radio engineer most well known for creating the template for modern rock sound systems.

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Bochum Observatory

Bochum Observatory, often known in Bochum as Cape Kaminski (Kap Kaminski) is a research institute in Bochum, Nordrhein-Westfalen, Germany.

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Body capacitance

Body capacitance is the physical property of the human body that has it act as a capacitor.

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Boerentoren

The Boerentoren ("Farmer's Tower"; officially the KBC Tower, originally the Torengebouw van Antwerpen) is a historic tall building in Antwerp, Belgium.

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Boistfort Peak

Boistfort Peak, also called Baw Faw Peak is a peak in the Willapa Hills in Washington state.

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Border outpost

A border outpost, border out post, border observation post or BOP is an outpost maintained by a sovereign state on its border, usually one of a series placed at regular intervals, to watch over and safeguard its border with a neighboring state with whom it may or may not have cordial relations.

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Box truss

A box truss is a structure composed of three or more chords connected by transverse and/or diagonal structural elements.

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Brück aerial testing facility

The Brück aerial testing facility is a facility for testing aerials at Brück, south of Berlin.

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Bridge Day

Bridge Day is an annual one-day festival in Fayetteville, Fayette County, West Virginia, United States The event is coordinated by the New River Gorge Bridge Day Commission, and is sponsored by numerous companies of both local and international significance.

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British Telecom microwave network

The British Telecom microwave network was a network of point-to-point microwave radio links in the United Kingdom, operated at first by the General Post Office, and subsequently by its successor BT plc.

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Broadband over power lines

Broadband over power lines (BPL) is a method of power line communication (PLC) that allows relatively high-speed digital data transmission over the public electric power distribution wiring.

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Broadcast engineering

Broadcast engineering is the field of electrical engineering, and now to some extent computer engineering and information technology, which deals with radio and television broadcasting.

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Broadcast license

A broadcast license is a type of spectrum license granting the licensee permission to use a portion of the radio frequency spectrum in a given geographical area for broadcasting purposes.

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Broadcast transmitter

A broadcast transmitter refers to an installation used for broadcasting, including radio transmitter or television transmitter equipment, the antenna, and often the location of the broadcasting station.

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Broadcasting

Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves), in a one-to-many model.

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Brocken Transmitter

The Brocken Transmitter (Sender Brocken) is a facility for FM- and TV-transmitters on the Brocken, the highest mountain in northern Germany.

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BT Tower

The BT Tower is a communications tower located in Fitzrovia, London, owned by BT Group.

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Bud Industries

Bud Industries is a manufacturer and supplier of electronics enclosures founded by Max Haas in 1928 and based in Willoughby, Ohio near Cleveland.

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Bullbar

A bullbar or push bumper (also roo bar or nudge bar in Australia, moose bumper in Canada, and push bar, bull bar, brush guard, grille guard or cattle pusher in the United States) is a device installed on the front of a vehicle to protect its front from collisions, whether an accidental collision with a large animal in rural roads, or an intentional collision with another vehicle in police usage.

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Burj Khalifa

The Burj Khalifa (برج خليفة, Arabic for "Khalifa Tower"; pronounced), known as the Burj Dubai before its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates.

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Cable television headend

A cable television headend is a master facility for receiving television signals for processing and distribution over a cable television system.

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Cage aerial

A cage antenna (British cage aerial) is a radio antenna that consists of the top portion of a tower or mast and of several parallel wires, which are radially arranged around the lower part of the mast.

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Caldbeck transmitting station

The Caldbeck transmitting station is a broadcasting and telecommunications facility, situated close to the village of Caldbeck, in Cumbria, England (Grid Reference: NY299425).

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Campervan

A campervan (or camper van), sometimes referred to as a camper, or a caravanette, is a self-propelled vehicle that provides both transport and sleeping accommodation.

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Campus of the Massachusetts Institute of Technology

The campus of the Massachusetts Institute of Technology is located on a tract in Cambridge, Massachusetts, United States.

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Candelabra

A candelabrum (plural candelabrums, candelabra, candelabras), sometimes called a candle tree, is a candle holder with multiple arms.

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CanSat

A CanSat is a type of sounding rocket payload used to teach space technology.

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Cantenna

A cantenna (a portmanteau blending the words can and antenna) is a homemade directional waveguide antenna, made out of an open-ended metal can.

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Capital Radio (pirate)

Capital Radio (not to be confused with the later British radio station of the same name) was a pirate radio station which operated from international waters off the coast of the Netherlands in 1970.

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Cappello Alpino

The Cappello Alpino is the most distinctive feature of the Italian Army's Alpini troops uniform.

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Captain-class frigate

The Captain class was the designation given to 78 frigates of the Royal Navy, constructed in the United States of America, launched in 1942–1943 and delivered to the United Kingdom under the provisions of the Lend-Lease agreement (under which the United States of America supplied the United Kingdom and other Allied nations with materiel between 1941 and 1945).

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Caravan (towed trailer)

A caravan, travel trailer, camper or camper trailer is towed behind a road vehicle to provide a place to sleep which is more comfortable and protected than a tent (although there are fold-down trailer tents).

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Carpentier joint

A carpentier joint is a hinge consisting of several thin metal strips of curved cross section.

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Carson bandwidth rule

In telecommunication, Carson's bandwidth rule defines the approximate bandwidth requirements of communications system components for a carrier signal that is frequency modulated by a continuous or broad spectrum of frequencies rather than a single frequency.

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Carson Morrison

Carson F. Morrison, P.Eng.

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Cassegrain

Cassegrain may refer to.

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Cassegrain antenna

In telecommunications and radar, a Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed at a smaller convex secondary reflector suspended in front of the primary reflector.

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Cassegrain reflector

The Cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas.

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Cassini–Huygens

The Cassini–Huygens mission, commonly called Cassini, was a collaboration between NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a probe to study the planet Saturn and its system, including its rings and natural satellites.

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Castor, Louisiana

Castor is a village in Bienville Parish in north Louisiana, United States.

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Cavity magnetron

The cavity magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators).

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CBAL-FM

CBAL-FM is a Canadian radio station, which broadcasts SRC's Ici Musique network at 98.3 FM in Moncton, New Brunswick.

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CBC Television

CBC Television (also known as simply "CBC") is a Canadian English-language broadcast television network that is owned by the Canadian Broadcasting Corporation, the national public broadcaster. The network began operations on September 6, 1952. Its French-language counterpart is Ici Radio-Canada Télé. Headquartered at the Canadian Broadcasting Centre in Toronto, CBC Television is available throughout Canada on over-the-air television stations in urban centres and as a must-carry station on cable and satellite television. Almost all of the CBC's programming is produced in Canada. Although CBC Television is supported by public funding, commercial advertising revenue supplements the network, in contrast to CBC Radio and public broadcasters from several other countries, which are commercial-free.

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CBCL-FM

CBCL-FM is a Canadian radio station in London, Ontario, broadcasting at 93.5 FM.

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CBCV-FM

CBCV-FM is a Canadian radio station, which broadcasts the programming of the CBC Radio One network in Victoria, British Columbia, and throughout Vancouver Island and the Southern Gulf Islands.

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CBF-FM-10

CBF-FM-10 is a French-language Canadian radio station located in Sherbrooke, Quebec.

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CBGA-FM

CBGA-FM is a French-language Canadian radio station located in Matane, Quebec.

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CBI-FM

CBI-FM is a Canadian radio station, which broadcasts the programming of the CBC Music network in Sydney, Nova Scotia.

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CBJX-FM

CBJX-FM is a French language Canadian radio station located in Saguenay, Quebec.

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CBKF-FM

CBKF-FM is a Canadian radio station, which broadcasts the programming of Radio-Canada's Ici Radio-Canada Première network at 97.7 FM in Regina, Saskatchewan.

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CBM-FM

CBM-FM (93.5 MHz) is a public non-commercial radio station in Montreal, Quebec.

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CBTK-FM

CBTK-FM is a Canadian radio station, which broadcasts the programming of the CBC Radio One network in Kelowna, British Columbia.

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CBV-FM

CBV-FM is a Canadian radio station, which broadcasts the programming of Radio-Canada's Première network in Quebec City.

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Cebreros Station

Cebreros Station (also known as DSA 2 or Deep Space Antenna 2) is a European Space Agency, ESTRACK radio antenna station for communication with spacecraft, located about 10 km east of Cebreros and 90 km from Madrid, Spain, operated by the European Space Operations Centre and INTA.

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Cedar Hill, Texas

Cedar Hill is a city in Dallas and Ellis counties in the U.S. state of Texas.

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Cell site

A cell site or cell tower is a cellular-enabled mobile device site where antennae and electronic communications equipment are placed — typically on a radio mast, tower, or other raised structure — to create a cell (or adjacent cells) in a cellular network.

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Cell tower technician

Cell tower technicians, also known as wireless service technicians, cell site technicians, cell site engineers, aerial technician, field technicians, or simply tower riggers are people that specialize in maintenance, installation, and decommissioning of cellular tower components such as coaxial cable, antennas, radios, fiber optic cable and broadcast equipment for cell phones, television, radio etc.

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Cellmax

CellMax Technologies, also known as Cellmax, is a Swedish developer and manufacturer of efficient antennas used for base station s in mobile networks.

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Cellular repeater

A cellular repeater (also known as cell phone signal booster or amplifier) is a type of bi-directional amplifier used to improve cell phone reception.

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Center for Southeastern Tropical Advanced Remote Sensing

The Center for Southeastern Tropical Advanced Remote Sensing (CSTARS) is a ground station that receives imagery data from a variety of remote sensing satellites.

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Central Instrumentation Facility

The Central Instrumentation Facility (CIF) is the core of instrumentation and data processing operations at NASA's John F. Kennedy Space Center, Florida supporting KSC's space launch responsibilities.

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Central Park (skyscraper)

Central Park is a 51-storey office tower in Perth, Western Australia.

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CenturyLink Building

The CenturyLink Building in Minneapolis, Minnesota was completed in 1932 and became the tallest building to be built in the city during the 1930s, 1940s, and 1950s.

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CFAN-FM

CFAN-FM is a Canadian radio station broadcasting at 99.3 FM in Miramichi, New Brunswick, owned by the Maritime Broadcasting System.

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CFBS-FM

CFBS-FM is a community radio station that operates at 89.9 FM in Blanc-Sablon, Quebec, Canada.

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CFBT-FM

CFBT-FM (94.5 FM) is a Canadian radio station in the Greater Vancouver region of British Columbia.

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CFBU-FM

CFBU-FM is a radio station serving St. Catharines, Ontario, Canada.

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CFCP-FM

CFCP-FM is a Canadian radio station that broadcasts an active rock format at 98.9 FM in Courtenay, British Columbia.

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CFCY-FM

CFCY-FM is a Canadian radio station broadcasting at 95.1 FM in Charlottetown, Prince Edward Island with a country music format branded on-air as 95.1 CFCY.

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CFDV-FM

CFDV-FM, branded as 106.7 The Drive, is a Canadian radio station, broadcasting an active rock format at 106.7 FM in Red Deer, Alberta.

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CFEL-FM

CFEL-FM is a French-language Canadian radio station located in Quebec City, Quebec, but the station's official city of license is Lévis.

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CFFM-FM

CFFM-FM is a Canadian radio station broadcasting at 97.5 FM in Williams Lake, British Columbia, with an active rock format as The Goat: World Class Rock.

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CFGE-FM

CFGE-FM is a French-language Canadian radio station located in Sherbrooke, Quebec.

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CFIC-FM

CFIC-FM is a First Nations community radio format operates at 105.1 FM in Listuguj, Quebec, Canada.

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CFLN-FM

CFLN-FM is a Canadian radio station in Happy Valley-Goose Bay, Labrador broadcasting at 97.9 FM.

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CFML-FM

CFML-FM is the campus radio station of the British Columbia Institute of Technology in Burnaby, British Columbia, Canada.

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CFMU-FM

CFMU-FM is a Canadian radio station, broadcasting at 93.3 FM in Hamilton, Ontario.

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CFNA-FM

CFNA-FM is a Canadian radio station, broadcasting at 99.7 FM in Bonnyville, Alberta.

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CFNE-FM

CFNE-FM is a First Nations community radio station that broadcasts at 93.9 FM in Waswanipi, Quebec, Canada.

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CFNM-FM

CFNM-FM is a community radio station that broadcasts at 99.9 FM in Nemaska, Quebec, Canada.

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CFOR-FM

CFOR-FM is a Canadian radio station that broadcasts an active rock format at 99.3 FM in Maniwaki, Quebec.

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CFPW-FM

CFPW-FM is a Canadian radio station broadcasting at 95.7 FM in Powell River, British Columbia with an adult contemporary format branded as Coast 95.7 FM.

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CFRH-FM

CFRH-FM is a Canadian radio station, broadcasting at 88.1 FM in Penetanguishene, Ontario.

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CFRI-FM

CFRI-FM is a Canadian radio station broadcasting at 104.7 FM in Grande Prairie, Alberta owned by Vista Radio.

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CFRT-FM

CFRT-FM is a Canadian radio station, broadcasting at 107.3 FM in Iqaluit, Nunavut.

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CFSF-FM

CFSF-FM is a Canadian radio station, broadcasting at 99.3 FM in Sturgeon Falls, Ontario.

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CFSI-FM

CFSI-FM was a Canadian radio station began broadcasting on September 14, 2009.

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CFSM-FM

CFSM-FM, branded as Summit 107, is a Canadian radio station, launched on Friday, September 11, 2015 at 1:07 p.m..

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CFUR-FM

CFUR-FM is a Canadian FM radio station, broadcasting at FM 88.7 in Prince George, British Columbia.

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CFVR-FM

CFVR-FM is a Canadian radio station serving Fort McMurray, Alberta, Canada, broadcasting at 103.7 FM with a hot adult contemporary format branded on-air as Mix 103.7.

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CFXO-FM

CFXO-FM is a Canadian radio station that broadcasts a country music format at 99.7 FM in High River, Alberta.

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CFZN-FM

CFZN-FM is a Canadian radio station with an active rock format broadcasting at 93.5 FM in Haliburton, Ontario and is owned by the Haliburton Broadcasting Group.

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ChampionChip

ChampionChip is a brand name of one type of passive RFID transponders, marked with a unique identification number and used in active sports events to keep track of the competition times of participants.

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Channel 5 (UK)

Channel 5 is a British commercial television network.

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Channel Chuckles

Channel Chuckles was a television-themed comic panel created by Bil Keane which appeared in newspapers from 1954 through 1976.

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Characters in the Novels of the Company

Dr.

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Charles H. Papas

Charles Herach Papas (March 29, 1918 – July 8, 2007) was an American applied physicist and electrical engineer, known for his contributions to electromagnetic theory, microwaves, radiophysics, gravitational electromagnetics, astrophysics, guided waves, and remote sensing.

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Charles Samuel Franklin

Charles Samuel Franklin (1879–1964), who published as C. S. Franklin, was a noted British radio pioneer.

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Chasqui I

Chasqui I is a one-kilogram nanosatellite project that was launched by hand from the International Space Station during a spacewalk on August 18, 2014.

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CHBB-FM

CHBB-FM, is a Canadian radio station, which broadcasts a community radio format at 95.9 MHz in Norris Point, Newfoundland and Labrador.

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CHBE-FM

CHBE-FM (107.3 Kool FM) is a Canadian radio station, broadcasting at 107.3 FM in Victoria, British Columbia, and is owned by Bell Media.

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CHBO-FM

CHBO-FM is a Canadian radio station broadcasting at 107.5 FM in Humboldt, Saskatchewan with a hot adult contemporary format branded as 107.5 Bolt FM.

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CHBZ-FM

CHBZ-FM is a Canadian radio station that broadcasts a country music format at 104.7 FM in Cranbrook, British Columbia.

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CHDR-FM

CHDR-FM is a Canadian radio station in Cranbrook, British Columbia that broadcasts an active rock format at 102.9 FM branded as 102.9 The Drive FM.

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Cheaha Mountain

Cheaha Mountain, often called Mount Cheaha, is the highest natural point in the U.S. state of Alabama.

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Chequamegon-Nicolet National Forest

The Chequamegon-Nicolet National Forest (the q is silent) is a U.S. National Forest in northern Wisconsin in the United States.

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CHET-FM

CHET-FM is a Canadian radio station that broadcasts a community/campus radio format at 94.5 FM in Chetwynd, British Columbia.

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Chetwynd, British Columbia

Chetwynd is a district municipality located on the foothills of the Rocky Mountains in northeastern British Columbia, Canada.

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Chevrolet C/K

The C/K was Chevrolet and GMC's full-size pickup truck line from 1960 until 2000 in the United States and Canada, from 1964 to 2001 in Brazil, and from 1975 to 1982 in Chile.

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CHFR-FM

CHFR-FM is a Canadian English-language community FM radio station at 96.5 FM in Hornby Island, British Columbia.

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CHFT-FM

CHFT-FM is a Canadian radio station broadcasting at 100.5 FM in Fort McMurray, Alberta.

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CHGS-FM

CHGS-FM is an emergency broadcast system radio station, owned by the municipality of Greenstone, Ontario.

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CHHO-FM

CHHO-FM is a French-language community radio format which operates at 103.1 MHz (FM) in Louiseville, Quebec, Canada, with rebroadcaster CHHO-FM-1 104.9 MHz in Saint-Alexis-des-Monts.

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China Central Television

China Central Television (formerly Beijing Television), commonly abbreviated as CCTV, is the predominant state television broadcaster in the People's Republic of China.

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Chinese space program

The space program of the People's Republic of China is directed by the China National Space Administration (CNSA).

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CHLQ-FM

CHLQ-FM is a Canadian radio station broadcasting at 93.1 FM in Charlottetown, Prince Edward Island.

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CHNC-FM

CHNC-FM is a French-language Canadian radio station located in New Carlisle, Quebec, Canada.

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CHNO-FM

CHNO-FM (103.9 FM) is a Canadian radio station broadcasting at 103.9 on the FM dial in Sudbury, Ontario.

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CHNV-FM

CHNV-FM is an adult hits radio station broadcasting at 103.5 FM in Nelson, British Columbia, Canada and is also heard at 91.9 FM in Crawford Bay with the call sign CHNV-FM-1.

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CHOA-FM

CHOA-FM is a Canadian radio station, broadcasting at 96.5 FM in Rouyn-Noranda, Quebec.

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Chocorua Lake

Chocorua Lake is a picturesque lake in northeast New Hampshire with commanding views of the summit of Mount Chocorua.

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CHPH-FM

CHPH-FM is a First Nations community radio station that operates at 99.7 FM in Wemindji, Quebec, Canada.

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CHPQ-FM

CHPQ-FM (known on-air as "The Lounge") is a Canadian radio station operating in Parksville, British Columbia at 99.9 FM.

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CHRQ-FM

CHRQ-FM (106.9 FM) is a radio station that broadcasts a community radio format to the Listuguj, Quebec, Canada area.

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CHRZ-FM

CHRZ-FM is a Canadian radio station, broadcasting at 91.3 FM in Wasauksing, Ontario near Parry Sound.

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CHSJ-FM

CHSJ-FM is a Canadian radio station broadcasting at 94.1 FM in Saint John, New Brunswick.

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CHSN-FM

CHSN-FM is a Canadian radio station, broadcasting at 102.3 FM in Estevan, Saskatchewan.

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CHSU-FM

CHSU-FM is a Canadian radio station, broadcasting at 99.9 FM in Kelowna, British Columbia.

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CHTC-FM

CHTC-FM is a radio station that broadcasts on a frequency 99.9 FM in Tsiigehtchic, Northwest Territories, Canada.

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CHTN-FM

CHTN-FM is a Canadian radio station broadcasting in Charlottetown, Prince Edward Island, at 100.3 FM with a classic hits format branded as Ocean 100.

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Chu–Harrington limit

In electrical engineering and telecommunications the Chu–Harrington limit or Chu limit sets a lower limit on the Q factor for a small radio antenna.

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CHUK-FM

CHUK-FM is a First Nations community radio station that operates at 107.3 FM in Mashteuiatsh, Quebec, Canada.

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CHVD-FM

CHVD-FM is a French-language Canadian radio station in Dolbeau-Mistassini, Quebec.

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CHWV-FM

CHWV-FM is a Canadian radio station in Saint John, New Brunswick broadcasting at 97.3 FM.

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CHXL-FM

CHXL-FM is a community radio station that operates at 95.3 FM in Okanese Indian Reserve, Saskatchewan, Canada.

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CHYZ-FM

CHYZ-FM is the college radio station for Université Laval, located in Sainte-Foy, Québec, Canada.

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CIAU-FM

CIAU-FM is a French-language community radio station that operates at 103.1 FM in Radisson, Quebec, Canada.

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CIBC Tower

CIBC Tower (La Tour CIBC) is a forty-five-storey skyscraper in Montreal, Quebec.

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CIBU-FM

CIBU-FM is a Canadian radio station, which broadcasts at 94.5 FM in Wingham, Ontario.

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CIBX-FM

CIBX-FM is a radio station in Fredericton, New Brunswick, Canada, broadcasting at 106.9 FM.

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CICU-FM

CICU-FM is a Canadian radio station broadcasting at 94.1 MHz from the Eskasoni First Nation on Cape Breton Island in Nova Scotia.

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CIDI-FM

CIDI-FM is an English language community radio station with French programming that broadcasts at 99.1 FM in Brome Lake, Quebec, Canada.

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CIEU-FM

CIEU-FM is a french language community radio station that operates at 94.9 FM in Carleton-sur-Mer, Quebec, Canada and is also heard at 106.1 FM in Paspébiac.

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CIGM-FM

CIGM-FM is a Canadian radio station, which broadcasts in Sudbury, Ontario.

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CIGO-FM

CIGO-FM is a Canadian radio station, broadcasting in Port Hawkesbury, Nova Scotia at 101.5 FM.

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CIGV-FM

CIGV-FM is a Canadian radio station, which broadcasts at 100.7 FM in Penticton, British Columbia, with rebroadcasters in Keremeos and Princeton.

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CIHS-FM

CIHS-FM is a Canadian radio station broadcasting a gospel music format at 93.5 FM in Wetaskiwin, Alberta and is owned by Tag Broadcasting.

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CIHW-FM

CIHW-FM is a Canadian radio station, which broadcasts to the Huron-Wendat Nation.

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CIJK-FM

CIJK-FM is a Canadian radio station broadcasting at 89.3 FM in Kentville, Nova Scotia owned by Newcap Radio.

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CIKX-FM

CIKX-FM is a Canadian radio station broadcasting in Grand Falls, New Brunswick at 93.5 MHz and 5,300 watts.

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CILK-FM

CILK-FM is a Canadian radio station located in Kelowna, British Columbia.

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CIMS-FM

CIMS-FM (Radio Restigouche) is a Canadian French-language community radio station operating at 103.9 MHz/FM, located in Balmoral, New Brunswick.

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CINB-FM

CINB-FM is a Canadian radio station in Saint John, New Brunswick.

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CINI-FM

CINI-FM is a First Nations community radio station that operates at 95.3 FM in Mistissini, Quebec, Canada.

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CINN-FM

CINN-FM is a Canadian radio station, broadcasting at 91.1 FM in Hearst, Ontario.

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CINU-FM

CINU-FM is a Canadian religious broadcasting radio station, broadcasting from Truro, Nova Scotia on 106.3 FM and is branded Hope 106.3 FM.

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CIPC-FM

CIPC-FM is a french language contemporary hit radio station that operates at 99.1 MHz (FM).

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CIRA-FM

CIRA-FM is a French language Canadian radio station located in Montreal, Quebec.

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Circulator

A circulator is a passive non-reciprocal three- or four-port device, in which a microwave or radio frequency signal entering any port is transmitted to the next port in rotation (only).

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CIRP-FM

CIRP-FM is a Canadian radio station which broadcasts a Christian music variety radio format at 94.7 MHz (FM) from Spryfield, Nova Scotia a community in Halifax, Nova Scotia.

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CIRX-FM

CIRX-FM is a Canadian radio station broadcasting at 94.3 FM in Prince George, British Columbia.

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Citizens band radio

Citizens band radio (also known as CB radio) is, in many countries, a system of short-distance radio communications between individuals typically on a selection of 40 channels within the 27 MHz (11 m) band.

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City of New York (1885 ship)

The City of New York was a steam barque best known for being Richard E. Byrd’s flagship on his 1928–30 exploration of Antarctica, mistakenly for the rescue of Shackleton in 1915, and most infamously for possibly being the ship that failed to come to the aid of the Titanic in 1912.

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CIUP-FM

CIUP-FM is a Canadian radio station, broadcasting at 99.3 FM in Edmonton, Alberta.

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CIUR-FM

CIUR-FM is a Canadian radio station broadcasting at 104.7 FM in Winnipeg, Manitoba with a country music format branded as Now Country 104.7 FM.

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CIVL-FM

CIVL-FM is a Canadian radio station located at the University of the Fraser Valley (Building S) in Abbotsford, British Columbia.

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CIXL-FM

CIXL-FM is a Canadian radio station, broadcasting in Welland, Ontario.

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CIYN-FM

CIYN-FM is a classic hits radio station in Kincardine, Ontario, broadcasting at 95.5 FM.

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CJAI-FM

CJAI-FM, known on air as Amherst Island Radio, is a radio station in Stella, Ontario, Canada.

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CJAV-FM

CJAV-FM is a Canadian radio station broadcasting at 93.3 FM in Port Alberni, British Columbia.

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CJCH-FM

CJCH-FM is a Canadian radio station broadcasting at 101.3 FM in Halifax, Nova Scotia.

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CJCI-FM

CJCI-FM is a Canadian radio station broadcasting at 97.3 FM in Prince George, British Columbia, owned by Vista Radio.

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CJCY-FM

CJCY-FM is a Canadian radio station, broadcasting at 102.1 FM in Medicine Hat, Alberta and broadcasts throughout South-eastern Alberta and South-western Saskatchewan.

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CJED-FM

CJED-FM is a radio station in Niagara Falls, Ontario, Canada.

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CJET-FM

CJET-FM is a Canadian radio station.

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CJFH-FM

CJFH-FM is a Canadian radio station, broadcasting at 94.3 FM in Woodstock, Ontario.

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CJGO-FM

CJGO-FM is a Canadian radio station, which broadcasts at 102.1 FM in La Sarre, Quebec.

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CJGY-FM

CJGY-FM is a Canadian radio station that broadcasts a Contemporary Christian format at 96.3 FM in Grande Prairie, Alberta.

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CJIB-FM

CJIB-FM (formerly CKIZ-FM) is a radio station in Vernon, British Columbia, Canada, airing an adult contemporary format at 107.5 FM branded as Beach Radio 107.5.

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CJIJ-FM

CJIJ-FM (branded as C99 FM) is a Canadian radio station, broadcasting in FM stereo at a frequency of 99.9 MHz from Membertou, a First Nations community near Sydney, Nova Scotia.

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CJJC-FM

CJJC-FM is a Christian music radio station that operates at 98.5 FM in Yorkton, Saskatchewan, Canada.

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CJJM-FM

CJJM-FM is a Canadian radio station, broadcasting at 99.3 FM in Espanola, Ontario.

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CJKC-FM

CJKC-FM is a Canadian radio station, broadcasting at 103.1 FM in Kamloops, British Columbia.

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CJLS-FM

CJLS-FM is a Canadian radio station broadcasting at 95.5 FM in Yarmouth, Nova Scotia.

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CJLT-FM

CJLT-FM is a Canadian radio station broadcasting at 93.7 FM in Medicine Hat, Alberta.

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CJMC-FM

CJMC-FM is a French-language Canadian radio station located in Sainte-Anne-des-Monts, Quebec.

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CJMG-FM

CJMG-FM is a Canadian radio station located in Penticton, British Columbia.

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CJNE-FM

CJNE-FM is a privately owned Canadian radio station that broadcasts an incredibly diverse oldies/adult hits/classic rock format, branded as The Storm, at 94.7 FM in Nipawin, Saskatchewan.

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CJNS-FM

CJNS-FM is a Canadian radio station that broadcasts a country music format at 102.3 FM in Meadow Lake, Saskatchewan.

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CJNW-FM

CJNW-FM (Hot 107, stylized as HOT 107) is a Canadian radio station and is home to "Ryder in the Morning with Lisa Evans", that broadcasts a Top 40 format on the frequency 107.1 FM in Edmonton, Alberta.

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CJOC-FM

CJOC-FM is a Canadian radio station, broadcasting at 94.1 FM in Lethbridge, Alberta.

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CJQQ-FM

CJQQ-FM is a Canadian radio station, broadcasting at 92.1 FM in Timmins, Ontario.

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CJRG-FM

CJRG-FM is a Canadian radio station that broadcasts at 94.5 FM in Gaspé, Quebec and airing a community radio format.

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CJRW-FM

CJRW-FM is a Canadian radio station broadcasting at 102.1 FM in Summerside, Prince Edward Island owned & operated by the Maritime Broadcasting System.

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CJSD-FM

CJSD-FM is a Canadian radio station, broadcasting at 94.3 FM in Thunder Bay, Ontario.

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CJSE-FM

CJSE-FM is a French language country music radio station in Shediac, New Brunswick, Canada and is licensed to Moncton, New Brunswick, CJSE is owned by Radio Beauséjour Inc. Owned by Radio Beauséjour Inc., the station received CRTC approval in 1993. Morning drive host John Richard (JR) has been with CJSE since the latter 1990s. JR, educated and raised in the region, is a pioneer of the Moncton radio market having worked since the mid-1970s. He is a veteran of CKCW-AM, CFQM-FM and the defunct CFNB-AM, respectively.

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CJSU-FM

CJSU-FM is a Canadian adult hits radio station that broadcasts a mix of 1970s, 1980s, 1990s, and 2000s hits with some current hot adult contemporary singles at 89.7 FM in Duncan, British Columbia.

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CJTW-FM

CJTW-FM is a Canadian radio station, broadcasting at 93.7 FM in Kitchener, Ontario.

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CJVD-FM

CJVD-FM is a French-language Canadian radio station located in Vaudreuil-Dorion, Quebec.

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CJVR-FM

CJVR-FM is a Canadian radio station broadcasting at 105.1 FM in Melfort, Saskatchewan.

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CJXK-FM

CJXK-FM is a Canadian radio station, broadcasting at 95.3 FM in Cold Lake, Alberta owned by Newcap Radio.

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CJZN-FM

CJZN-FM, known as The Zone @ 91.3 or The Zone, is a Canadian broadcast radio station in Victoria, British Columbia, Canada.

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CKAP-FM

CKAP-FM is a Canadian radio station, which broadcasts at 100.9 FM in Kapuskasing, Ontario.

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CKAU-FM

CKAU-FM is a French language First Nations community radio station that operates at 104.5 FM in Maliotenam, Quebec.

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CKBZ-FM

CKBZ-FM is a radio station in Kamloops, British Columbia, Canada.

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CKCQ-FM

CKCQ-FM is a Canadian radio station, which broadcasts at 100.3 FM in Quesnel, British Columbia.

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CKDR-FM

CKDR-FM is a radio station in Dryden, Ontario, Canada.

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CKDV-FM

CKDV-FM is a Canadian radio station broadcasting at 99.3 FM in Prince George, British Columbia.

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CKEC-FM

CKEC-FM is a Canadian radio station broadcasting at 94.1 FM in New Glasgow, Nova Scotia owned by Hector Broadcasting.

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CKEN-FM

CKEN-FM is a Canadian radio station, broadcasting from Kentville, Nova Scotia at 97.7 FM.

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CKEX-FM

CKEX-FM is a Canadian radio station broadcasting a Alternative rock format at 100.7 FM in Red Deer, Alberta.

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CKFI-FM

CKFI-FM is a Canadian radio station licensed to Swift Current, Saskatchewan, serving the southwestern Saskatchewan area broadcasting at 97.1 FM with a hot adult contemporary format branded as Magic 97.1.

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CKFU-FM

CKFU-FM, branded as 100.1 Moose FM, is a Canadian radio station, broadcasting in Fort St. John, British Columbia.

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CKGI-FM

CKGI-FM is a new community radio station which will operate at 98.7 MHz (FM) in Gabriola Island, British Columbia, Canada.

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CKGR-FM

CKGR-FM is a Canadian radio station that broadcasts on 106.3 MHz in Golden, British Columbia.

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CKHA-FM

CKHA-FM is a Canadian radio station, which airs at 100.9 FM in Haliburton, Ontario.

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CKHC-FM

CKHC-FM is a Canadian radio station, broadcasting at 96.9 FM in Toronto, Ontario.

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CKIQ-FM

CKIQ-FM is a Canadian radio station, which broadcasts at 99.9 FM in Iqaluit, Nunavut.

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CKKC-FM

CKKC-FM is a Canadian radio station that broadcasts an adult contemporary format at 106.9 FM in Nelson, British Columbia.

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CKKQ-FM

CKKQ-FM, known as 100.3 The Q or The Q, is a broadcast radio station in Victoria, British Columbia, Canada.

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CKKS-FM

CKKS-FM is a Canadian radio station.

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CKLM-FM

CKLM-FM is a Canadian radio station, broadcasting at 106.1 FM in Lloydminster, Alberta.

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CKLR-FM

CKLR-FM is a Canadian radio station broadcasting at 97.3 FM in Courtenay, British Columbia.

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CKLZ-FM

CKLZ-FM is a Canadian radio station, broadcasting at 104.7 FM in Kelowna, British Columbia.

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CKMQ-FM

CKMQ-FM is a radio station broadcasting at 101.1 FM in Merritt, British Columbia, Canada.

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CKMW-FM

CKMW-FM is a Canadian radio station licensed to Morden, Manitoba, serving the Pembina Valley region of Manitoba broadcasting at 88.9 FM with a country format branded as Country 88.9.

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CKNN-FM

CKNN-FM is a Canadian non-commercial community radio station based in Bella Coola, British Columbia.

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CKOL-FM

CKOL-FM is a community radio station broadcasting at 93.7 FM in Campbellford, Ontario, Canada, with a repeater, CKOL-FM-1 100.7 located in Madoc.

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CKOY-FM

CKOY-FM is a French-language Canadian radio station located in Sherbrooke, Quebec.

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CKPR-FM

CKPR-FM is a radio station in Thunder Bay, Ontario, Canada.

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CKQC-FM

CKQC-FM is a Canadian radio station, broadcasting at 107.1 FM in Abbotsford, British Columbia.

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CKQK-FM

CKQK-FM is a Canadian radio station broadcasting at 105.5 FM in Charlottetown, Prince Edward Island with a Top 40 format branded on-air as Hot 105.5.

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CKQQ-FM

CKQQ-FM is a Canadian radio station that broadcasts a hot adult contemporary format at 103.1 FM in Kelowna, British Columbia.

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CKQR-FM

CKQR-FM is a Canadian radio station that broadcasts a classic rock format at 99.3 FM in Castlegar, British Columbia.

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CKRE-FM

CKRE-FM is a community radio station that broadcasts at 104.9 FM in Ahtahkakoop First Nation, Saskatchewan, Canada.

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CKRH-FM

CKRH-FM is a Canadian radio station, broadcasting at 98.5 Mhz in Halifax, Nova Scotia.

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CKRP-FM

CKRP-FM was a Canadian French language community radio station that operates at 95.7 FM in Falher, Alberta.

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CKRW-FM

CKRW-FM, also branded The Rush, is a hot adult contemporary radio station in Whitehorse, Yukon, Canada.

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CKSA-FM

CKSA-FM is a Canadian radio station broadcasting at 95.9 FM in Lloydminster, Alberta.

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CKSR-FM

CKSR-FM (known on-air as Star FM) is a Canadian radio station located in Chilliwack, British Columbia.

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CKTO-FM

CKTO-FM is a Canadian radio station, broadcasting at 100.9 FM in Truro, Nova Scotia.

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CKUM-FM

CKUM 93.5 FM is a radio station broadcasting at 93.5 MHz in Moncton, New Brunswick, Canada.

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CKUT-FM

CKUT-FM is the official campus community radio station of McGill University.

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CKVB-FM

CKVB-FM, branded as Bay of Islands Radio, is a Canadian radio station, which broadcasts a community radio format at 100.1 FM in Corner Brook, Newfoundland and Labrador.

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CKVX-FM

CKVX-FM is a Canadian radio station broadcasting at 104.9 FM with a country music format branded as "Country 104.9".

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CKWT-FM

CKWT-FM is a radio station of Wawatay Radio Network in Sioux Lookout, Ontario, Canada.

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CKWY-FM

CKWY-FM is a Canadian radio station that broadcasts a hot adult contemporary format at 93.7 FM in Wainwright, Alberta.

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CKXO-FM

CKXO-FM is a French-language Canadian radio station in Chibougamau, Quebec.

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CKXX-FM

CKXX-FM is a Canadian radio station broadcasting from Corner Brook, Newfoundland and Labrador on 103.9 MHz with a classic rock format branded on-air as 103.9 K-Rock.

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CKYY-FM

CKYY-FM is an English language FM radio station that broadcasts a country music format on the frequency of 89.1 MHz (FM) in Welland, Ontario, Canada.

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Class-D amplifier

A class-D amplifier or switching amplifier is an electronic amplifier in which the amplifying devices (transistors, usually MOSFETs) operate as electronic switches, and not as linear gain devices as in other amplifiers.

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CN Tower

The CN Tower (Tour CN) is a concrete communications and observation tower located in the downtown core of the city of Toronto, Ontario, Canada.

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Coaxial antenna

A coaxial antenna (often known as a coaxial dipole) is a particular form of a half-wave dipole antenna, most often employed as a vertically polarized omnidirectional antenna.

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Coaxial cable

Cross-sectional view of a coaxial cable Coaxial cable, or coax (pronounced), is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.

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Cobham plc

Cobham plc is a British manufacturing company based in Wimborne Minster, Dorset, England.

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Cobra Dane

The AN/FPS-108 Cobra Dane radar is a passive electronically scanned array installation operated by Raytheon for the United States Air Force at Eareckson Air Station on the island of Shemya, Aleutian Islands, Alaska.

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Coherer

The coherer was a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century.

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Collinear antenna array

In telecommunications, a collinear antenna array is an array of dipole antennas mounted in such a manner that the corresponding elements of each antenna are parallel and collinear, that is they are located along a common line or axis.

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Collinearity

In geometry, collinearity of a set of points is the property of their lying on a single line.

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Colloidal crystal

A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules.

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Columbia Island (New York)

Columbia Island (formerly Little Pea Island), is an island in Long Island Sound and part of New Rochelle, New York.

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Columbia Park, Torrance, California

Columbia Park (formally Columbia Regional Park) is a recreational urban regional park in the City of Torrance, located in southern Los Angeles County, California.

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COM DEV International

COM DEV International is a satellite technology, space sciences and telecommunications company with headquarters in Cambridge, Ontario, Canada.

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Comcentre

Comcentre is a 32-storey, skyscraper in the Central Region of Singapore.

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Command guidance

Command guidance is a type of missile guidance in which a ground station or aircraft relay signals to a guided missile via radio control or through a wire connecting the missile to the launcher and tell the missile where to steer in order to intercept its target.

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Common emitter

In electronics, a common-emitter amplifier is one of three basic single-stage bipolar-junction-transistor (BJT) amplifier topologies, typically used as the voltage amplifier.

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Communication Moon Relay

The Communication Moon Relay project (also known as simply Moon Relay, or, alternatively, Operation Moon Bounce) was a telecommunication project carried out by the United States Navy.

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Communication with submarines

Communication with submarines is difficult because radio waves do not travel well through good electrical conductors like salt water.

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Communications satellite

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.

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Communications system

In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole.

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Communications-based train control

Communications-based train control (CBTC) is a railway signaling system that makes use of the telecommunications between the train and track equipment for the traffic management and infrastructure control.

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Communicator (Star Trek)

The communicator is a fictional device used for voice communication in the fictional universe of Star Trek. As seen in at least two instances, the Original Series episodes "Tomorrow Is Yesterday" and "Day of the Dove," it can also serve as an emergency signaling device/beacon, similar to a transponder.

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Community Home Entertainment

Community Home Entertainment (CHE) is a former American cable television company which began providing analog cable services to Bronx, New York in 1983 with most customers residing in Co-op City, Bronx.

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Comparison of 802.15.4 radio modules

An 802.15.4 radio module is a small device used to communicate wirelessly with other devices according to the IEEE 802.15.4 protocol.

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Computational electromagnetics

Computational electromagnetics, computational electrodynamics or electromagnetic modeling is the process of modeling the interaction of electromagnetic fields with physical objects and the environment.

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Conformal antenna

In radio communication and avionics a conformal antenna or conformal array is a flat radio antenna which is designed to conform or follow some prescribed shape, for example a flat curving antenna which is mounted on or embedded in a curved surface.

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Conformance testing

Conformance testing — also known as conformity assessment, compliance testing, or type testing — is testing or other activities that determine whether a process, product, or services complies with the requirements of a specification, technical standard, contract, or regulation.

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Conical scanning

Conical scanning is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target.

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Connexion by Boeing

Connexion by Boeing (CBB) was an in-flight online internet connectivity service from Boeing.

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Constant false alarm rate

Constant false alarm rate (CFAR) detection refers to a common form of adaptive algorithm used in radar systems to detect target returns against a background of noise, clutter and interference.

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Constantine A. Balanis

Constantine A. Balanis (born 1938) is a Greek born American scientist, educator and author.

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Construction of the World Trade Center

The construction of the first World Trade Center complex in New York City was conceived as an urban renewal project to help revitalize Lower Manhattan spearheaded by David Rockefeller.

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Contest logging software

Contest logging software refers to specialized computer software programs designed for use by competitors in amateur radio contesting.

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Contesting

Contesting (also known as radiosport) is a competitive activity pursued by amateur radio operators.

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Contesting technology

The sport of amateur radio contesting has been responsible for the development of contesting technology specific to the sport.

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Copper conductor

Copper has been used in electrical wiring since the invention of the electromagnet and the telegraph in the 1820s.

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Copper-clad steel

Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical resistance of steel with the conductivity and resistance to corrosion of copper.

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Cordless telephone

A cordless telephone or portable telephone is a telephone in which the handset is portable and communicates with the body of the phone by radio, instead of being attached by a cord.

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Corona ring

A corona ring, also called an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal or other irregular hardware piece of high voltage equipment.

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COST Hata model

The COST Hata model is a radio propagation model that extends the urban Hata model (which in turn is based on the Okumura model) to cover a more elaborated range of frequencies.

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Cotehill railway station

Cotehill railway station was a railway station on the Settle-Carlisle Railway in England between Armathwaite and Cumwhinton.

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Counterpoise (ground system)

In electronics and radio communication a counterpoise is a network of suspended horizontal wires or cables (or a metal screen), used as a substitute for an earth (ground) connection in a radio antenna system.

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Coverage map

Coverage maps are designed to indicate the service areas of radiocommunication transmitting stations.

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Crossed field antenna

A crossed field antenna, or CFA, is a controversial type of radio antenna for long and mediumwave broadcasting, patented by F. M. Kabbary and M. C. Hately in 1986, which was claimed to have the same efficiency as a conventional antenna but only one-tenth the overall height.

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Crosstrees

Crosstrees are the two horizontal spars at the upper ends of the topmasts of sailing ships, used to anchor the shrouds from the topgallant mast.

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Crowsley Park

Crowsley Park is a country estate in South Oxfordshire, central-southern England, owned by the British Broadcasting Corporation (BBC).

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CryoSat-2

CryoSat-2 is a European Space Agency environmental research satellite which was launched in April 2010.

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Crystal radio

A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio.

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CTV Television Network

The CTV Television Network (commonly referred to as CTV) is an English-language broadcast television network in Canada launched in 1961.

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CTV Two

CTV Two (also known as "CTV 2") is a Canadian English language television system that is owned by the Bell Media subsidiary of Bell Canada.

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Cuac FM

Cuac FM is a community radio station that began broadcasting in 1996 on 103.4 FM in A Coruña, Spain.

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Curtain array

Curtain arrays are a class of large multielement directional wire radio transmitting antennas, used in the shortwave radio bands.

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Cutoff frequency

In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through.

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Dalek variants

Since their first appearance in 1963 there have been a number of variant models of the Daleks, a fictional alien race in the BBC science fiction television programme Doctor Who.

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DAMP Project

The Downrange Anti-missile Measurement Program or DAMP was an applied research project to obtain scientific data, just prior to and during re-entry, on intermediate- and intercontinental-range ballistic missiles as they returned to earth.

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Dark (broadcasting)

In the broadcasting industry, a dark television or silent radio station is one that has gone off the air for an indefinite period of time.

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David Rutledge (engineer)

Dr.

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Day of Defeat

Day of Defeat is a team-based multiplayer first-person shooter video game set in the European theatre of World War II on the Western front.

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De Havilland Mosquito

The de Havilland DH.98 Mosquito is a British twin-engine shoulder-winged multi-role combat aircraft.

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Decibel

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.

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Defense Satellite Communications System

The Defense Satellite Communications System (DSCS) provides the United States with military communications to support globally distributed military users.

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Degrees of freedom (mechanics)

In physics, the degree of freedom (DOF) of a mechanical system is the number of independent parameters that define its configuration.

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Delay line memory

Delay line memory is a form of computer memory, now obsolete, that was used on some of the earliest digital computers.

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DeLorean DMC-12

The DeLorean DMC-12 (commonly referred to simply as "the DeLorean", as it was the only model ever produced by the company) is a sports car originally manufactured by John DeLorean's DeLorean Motor Company for the American market from 1981 to 1983.

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Desensitization (telecommunications)

In telecommunications, desensitization is a form of electromagnetic interference where a radio receiver is unable to receive a weak radio signal that it might otherwise be able to receive when there is no interference.

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Desiccation

Desiccation is the state of extreme dryness, or the process of extreme drying.

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Deutscher Fernsehfunk

Deutscher Fernsehfunk (DFF), known from 1972 to 1990 as Fernsehen der DDR (DDR-FS), was the state television broadcaster in East Germany (German Democratic Republic, or GDR for short).

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Dielectric resonator

A dielectric resonator is a piece of dielectric (nonconductive) material, usually ceramic, that is designed to function as a resonator for radio waves, generally in the microwave and millimeter wave bands.

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Dielectric resonator antenna

A dielectric resonator antenna (DRA) is a radio antenna mostly used at microwave frequencies and higher, that consists of a block of ceramic material of various shapes, the dielectric resonator, mounted on a metal surface, a ground plane.

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Digital channel election

A digital channel election was the process by which television stations in the United States chose which physical radio-frequency TV channel they would permanently use after the analog shutdown in 2009.

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Digital selective calling

Digital selective calling or DSC is a standard for sending pre-defined digital messages via the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems.

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Diogenes Angelakos

Diogenes James Angelakos (1920 – June 7, 1997) was the director for 20 years of the Electronics Research Laboratory and a professor emeritus of electronic engineering at the University of California, Berkeley.

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Dipole antenna

In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna.

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Dipole field strength in free space

Dipole field strength in free space, in telecommunications, is the electric field strength caused by a half wave dipole under ideal conditions.

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Direct-conversion receiver

A direct-conversion receiver (DCR), also known as homodyne, synchrodyne, or zero-IF receiver, is a radio receiver design that demodulates the incoming radio signal using synchronous detection driven by a local oscillator whose frequency is identical to, or very close to the carrier frequency of the intended signal.

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Directed-energy weapon

A directed-energy weapon (DEW) is a ranged weapon system that inflicts damage at a target by emission of highly focused energy, including laser, microwaves and particle beams.

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Direction finding

Direction finding (DF), or radio direction finding (RDF), is the measurement of the direction from which a received signal was transmitted.

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Directional antenna

A directional antenna or beam antenna is an antenna which radiates or receives greater power in specific directions allowing increased performance and reduced interference from unwanted sources.

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Directivity

In electromagnetics, directivity is a parameter of an antenna or optical system which measures the degree to which the radiation emitted is concentrated in a single direction.

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DIRECTV blimp

The DIRECTV blimp launched in October 2007 at the MLB World Series in Boston and has been seen all over the United States since its inception.

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Discone antenna

A discone antenna is a version of a biconical antenna in which one of the cones is replaced by a disc.

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Discovery One

The United States Spacecraft Discovery One was a nuclear-powered interplanetary fictional spaceship controlled by the AI onboard computer HAL 9000 from the first two novels of the Space Odyssey series and the movies 2001: A Space Odyssey and 2010: The Year We Make Contact.

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Discrete-time beamforming

Beamforming is a signal processing technique used to spatially select propagating waves (most notably acoustic and electromagnetic waves).

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Disney Research

Disney Research is a network of research labs supporting The Walt Disney Company.

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Distant Early Warning Line

The Distant Early Warning Line, also known as the DEW Line or Early Warning Line, was a system of radar stations in the far northern Arctic region of Canada, with additional stations along the North Coast and Aleutian Islands of Alaska, in addition to the Faroe Islands, Greenland, and Iceland.

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Distributed antenna system

A distributed antenna system, or DAS, is a network of spatially separated antenna nodes connected to a common source via a transport medium that provides wireless service within a geographic area or structure.

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Distributed element circuit

Distributed element circuits are electrical circuits composed of lengths of transmission lines or other distributed components.

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Distributed element filter

A distributed element filter is an electronic filter in which capacitance, inductance and resistance (the elements of the circuit) are not localised in discrete capacitors, inductors and resistors as they are in conventional filters.

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DIT School of Electrical & Electronic Engineering

The Dublin Institute of Technology (DIT) School of Electrical and Electronic Engineering (SEEE) is the largest and one of the longest established Schools of Electrical and Electronic Engineering in Ireland.

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Dobrich TV Tower

Dobrich TV Tower is a 146-metre high TV Tower built of reinforced concrete near Dobrich in Bulgaria.

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Domžale

Domžale (Domschale)Leksikon občin kraljestev in dežel zastopanih v državnem zboru, vol.

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Dominion Radio Astrophysical Observatory

The Dominion Radio Astrophysical Observatory is a research facility founded in 1960 and located south-west of Okanagan Falls, British Columbia, Canada.

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Double Island Point Light

Double Island Point Light is an active lighthouse located at the summit of Double Island Point, a coastal headland within the Cooloola section of the Great Sandy National Park.

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Downtown Phoenix

Downtown Phoenix is the central business district (CBD) of the City of Phoenix, Arizona, United States.

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Dream Satellite TV

Dream Satellite TV was the first all-digital Direct-To-Home (DTH) television broadcasting service via satellite in the Philippines.

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DubaiSat-1

DubaiSat-1 is a remote sensing Earth observation satellite built by the Emirates Institution for Advanced Science and Technology (EIAST) under an agreement with Satrec Initiative, a satellite manufacturing company in South Korea.

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Dummy load

A dummy load is a device used to simulate an electrical load, usually for testing purposes.

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Duplexer

A duplexer is an electronic device that allows bi-directional (duplex) communication over a single path.

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Durris transmitting station

The Durris transmitting station is a broadcasting and telecommunications facility, situated close to the town of Stonehaven, within Durris Forest, within the area also known historically as Kincardineshire.

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DX-pedition

A DX-pedition is an expedition to what is considered an exotic place by amateur radio operators, perhaps because of its remoteness, access restrictions or simply because there are very few radio amateurs active from that place.

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E-plane and H-plane

The E-plane and H-plane are reference planes for linearly polarized waveguides, antennas and other microwave devices.

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E-VSB

E-VSB or Enhanced VSB is an optional enhancement to the original ATSC Standards that use the 8VSB modulation system used for transmission of digital television.

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Earth battery

An Earth battery is a pair of electrodes made of two dissimilar metals, such as iron and copper, which are buried in the soil or immersed in the sea.

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Earthing system

In an electrical installation an earthing system or grounding system connects specific parts of that installation with the Earth's conductive surface for safety and functional purposes.

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Ebino VLF transmitter

Ebino VLF transmitter is a large transmitter for transmitting orders to submerged submarines, situated near Ebino, Miyazaki in Japan.

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Edgar Gilbert

Edgar Nelson Gilbert (July 25, 1923 – June 15, 2013) was an American mathematician and coding theorist, a longtime researcher at Bell Laboratories whose accomplishments include the Gilbert–Varshamov bound in coding theory, the Gilbert–Elliott model of bursty errors in signal transmission, and the Erdős–Rényi model for random graphs.

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Educational Broadband Service

The Educational Broadband Service (EBS) was formerly known as the Instructional Television Fixed Service (ITFS).

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Effective height

In telecommunication, the effective height, or effective length, of an antenna is the height of the antenna's center of radiation above the ground.

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Egli model

The Egli model is a terrain model for radio frequency propagation.

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Eiffel Tower

The Eiffel Tower (tour Eiffel) is a wrought iron lattice tower on the Champ de Mars in Paris, France.

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Eiffel Tower in popular culture

The Eiffel Tower has appeared frequently in works of fiction because of its iconic nature.

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Eilvese transmitter

Eilvese transmitter was an early long-distance radiotelegraphy station at Eilvese, Germany owned by Transradio AG, used for transmission of telegrams.

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Ekran

Ekran ("Экран", "Screen") was a Soviet-Russian type of geostationary satellite, developed for a national system of Direct-To-Home television.

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Electric current

An electric current is a flow of electric charge.

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Electric-field integral equation

The electric-field integral equation is a relationship that allows the calculation of an electric field (E) generated by an electric current distribution (J).

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Electrical impedance

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

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Electrical resonance

Electrical resonance occurs in an electric circuit at a particular resonant frequency when the imaginary parts of impedances or admittances of circuit elements cancel each other.

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Electrically small antenna

An electrically short antenna is an antenna of length 2h, such that 2 \pi h\over\lambda \scriptstyle\ll 1, where λ is the free space wavelength.

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Electrodeless lamp

The internal electrodeless lamp or induction lamp is a gas discharge lamp in which an electric or magnetic field transfers the power required to generate light from outside the lamp envelope to the gas inside.

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Electromagnetic attack

In cryptography, electromagnetic attacks are side-channel attacks performed by measuring the electromagnetic radiation emitted from a device and performing signal analysis on it.

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Electromagnetic coil

An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix.

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Electromagnetic pulse

An electromagnetic pulse (EMP), also sometimes called a transient electromagnetic disturbance, is a short burst of electromagnetic energy.

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Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

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Electromagnetic radiation and health

Electromagnetic radiation can be classified into two types: ionizing radiation and non-ionizing radiation, based on the capability of a single photon with more than 10 eV energy to ionize oxygen or break chemical bonds.

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Electromagnetic reverberation chamber

An electromagnetic reverberation chamber (also known as a reverb chamber (RVC) or mode-stirred chamber (MSC)) is an environment for electromagnetic compatibility (EMC) testing and other electromagnetic investigations.

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Electromagnetic spectrum

The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.

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Electronic component

An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.

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Electronic symbol

An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit.

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Electronics Corporation of India Limited

Electronics Corporation of India Limited (ECIL) (भारत इलेक्ट्रॉनिक्स निगम लिमिटेड (ईसीआईएल)) is a Government of India Enterprise under the Department of Atomic Energy, established on April 11, 1967 by A. S. Rao at Hyderabad, to create a strong indigenous base in electronics.

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Eli Yablonovitch

Eli Yablonovitch (born 15 December 1946) is an American physicist and engineer who, along with Sajeev John founded the field of photonic crystals in 1987.

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Elta Systems

ELTA Systems Ltd is an Israeli provider of defense products and services specializing in radar, C4ISTAR, RF, SIGINT and EW products.

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EMF measurement

EMF measurements are measurements of ambient (surrounding) electromagnetic fields that are performed using particular sensors or probes, such as EMF meters.

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Empire State Building

The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan, New York City.

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Energy harvesting

Energy harvesting (also known as power harvesting or energy scavenging or ambient power) is the process by which energy is derived from external sources (e.g., solar power, thermal energy, wind energy, salinity gradients, and kinetic energy, also known as ambient energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.

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ENOS Rescue-System

ENOS stands for "Elektronisches Notruf- und Ortungssystem" - "Electronic Rescue and Location System" - a system developed in Germany for use by divers at sea.

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Enrique Telémaco Susini

Enrique Telémaco Susini (January 31, 1891 - July 4, 1972) was an Argentine entrepreneur and media pioneer.

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Entrance facility

In telecommunications, Entrance facility refers to the entrance to a building for both public and private network service cables (including antenna transmission lines, where applicable), including the entrance point at the building wall or floor, and continuing to the entrance room or entrance space.

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Environmental monitoring

Environmental monitoring describes the processes and activities that need to take place to characterise and monitor the quality of the environment.

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Environmental Science Services Administration

The Environmental Science Services Administration (ESSA) was a United States Federal executive agency created in 1965 as part of a reorganization of the United States Department of Commerce.

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Eric Cole

Major-General Eric Stuart Cole, CB, CBE (10 February 1906 – 19 December 1992) was a senior British Army officer and telecommunications expert.

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Ericsson Mobile Communications

Ericsson Mobile Communications AB was a subsidiary of Ericsson, entirely focused on development of mobile phones (handsets).

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Ericsson R290

The Ericsson R290 is a combined GSM and satellite phone using the Globalstar satellite network.

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Ericsson R310s

The Ericsson R310s, produced by Ericsson Mobile Communications, now supported by Sony Mobile Communications, was a mobile phone produced in the early 2000s in a rugged body designed for use in environments or ways which might easily damage a standard handset.

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Erinaceusyllis

Erinaceusyllis, previously known as Sphaerosyllis (Claparède, 1863), is a genus belonging to the phylum Annelida, a group known as the segmented worms.

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Erinaceusyllis cirripapillata

Erinaceusyllis cirripapillata is a species belonging to the phylum Annelida, a group known as the segmented worms.

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Erinaceusyllis ettiennei

Erinaceusyllis ettiennei is a species belonging to the phylum Annelida, a group known as the segmented worms.

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EUREF Permanent Network

EUREF Permanent Network (EPN) is a European Network of more than 300 continuously operating GNSS reference stations with precisely known coordinates referenced to the ETRS89.

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Eureka, Nunavut

Eureka is a small research base on Fosheim Peninsula, Ellesmere Island, Qikiqtaaluk Region, in the Canadian territory of Nunavut.

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Evanescent field

In electromagnetics, an evanescent field, or evanescent wave, is an oscillating electric and/or magnetic field that does not propagate as an electromagnetic wave but whose energy is spatially concentrated in the vicinity of the source (oscillating charges and currents).

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Evolved antenna

In radio communications, an evolved antenna is an antenna designed fully or substantially by an automatic computer design program that uses an evolutionary algorithm that mimics Darwinian evolution.

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Explorer 1

Explorer 1 was the first satellite of the United States, launched as part of its participation in the International Geophysical Year.

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Explorer 3

Explorer 3 (international designation 1958 Gamma) was an artificial satellite of the Earth, nearly identical to the first United States artificial satellite Explorer 1 in its design and mission.

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Explorer 38

Explorer 38 (also called as Radio Astronomy Explorer A, RAE-A and RAE-1) was the first satellite to studies in radioastronomy.

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Explorer 43

Explorer 43, also called as IMP-I and IMP 6, was a U.S. satellite launched as part of Explorers program.

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Explorer 45

Explorer 45 (also called as S-Cubed A and SSS-A) was a NASA satellite launched as part of Explorers program.

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Explorer 50

Explorer 50, also known as IMP-J or IMP-8, was a NASA satellite launched to study the magnetosphere.

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Explorer 60

Explorer 60, also called as SAGE, Stratospheric Aerosol and Gas Experiment and AEM-2 (Applications Explorer Mission 2), was a NASA scientific satellite launched on February 18, 1979, from Wallops Flight Facility board a Scout D rocket.

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ExpressCard

ExpressCard, initially called NEWCARD, is an interface to connect peripheral devices to a computer, usually a laptop computer.

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Extension cord

An extension cord, power extender, drop cord, or extension lead is a length of flexible electrical power cable (flex) with a plug on one end and one or more sockets on the other end (usually of the same type as the plug).

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Extremely low frequency

Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths of 100,000 to 10,000 kilometers, respectively.

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Fading

In wireless communications, fading is variation or the attenuation of a signal with various variables.

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Faraday cage

A Faraday cage or Faraday shield is an enclosure used to block electromagnetic fields.

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Fatigue (material)

In materials science, fatigue is the weakening of a material caused by repeatedly applied loads.

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Fawwaz T. Ulaby

Fawwaz T. Ulaby (فواز علبي) is Arthur F. Thurnau Professor of Electrical Engineering and Computer Science at the University of Michigan in Ann Arbor and formerly the Founding Provost and Executive Vice President of the King Abdullah University of Science and Technology (KAUST) and R. Jamieson and Betty Williams Professor of Electrical Engineering and Computer Science at the University of Michigan.

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Feba Radio

Feba Radio is a broadcasting network.

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Fee-for-carriage

Fee-for-carriage, value-for-signal, negotiation for value, or the "TV tax" all refer to a proposed Canadian television regulatory policy which would require cable and satellite television companies to compensate conventional, over-the-air television stations for the right to carry their local signals.

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Feed line

In a radio antenna, the feed line (feedline), or feeder, is the cable or other transmission line that connects the antenna with the radio transmitter or receiver.

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Feeder line (network)

A feeder line is a peripheral route or branch in a network, which connects smaller or more remote nodes with a route or branch carrying heavier traffic.

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Feldberg (Black Forest)

At the Feldberg in the Black Forest is the highest mountain in Baden-Württemberg, and the highest in Germany outside of the Alps.

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Ferdinand Feichtner

Ferdinand Feichtner (* 3 February 1908 in Augsburg, Bavaria) was a German, Luftwaffe radar and radio intercept specialist, before and during the time of World War II and who became Chief Signals Officer of the Luftnachrichten Abteilung 352, the Signals intelligence agency, whose task was the mapping and interception of communication intelligence of Allied Air Forces in the Mediterranean area.

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Fernmeldeturm Berlin

The Fernmeldeturm Berlin (Telecommunications Tower Berlin) is a telecommunication tower located atop the Schäferberg hill in Berlin-Wannsee.

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Fiberglass

Fiberglass (US) or fibreglass (UK) is a common type of fiber-reinforced plastic using glass fiber.

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Fibre satellite distribution

Fibre satellite distribution is a technology that enables satellite TV signals from an antenna to be distributed using an optical fibre cable infrastructure and then converted to electrical signals for use with conventional set-top box receivers.

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Field Day (amateur radio)

Field Day is an annual amateur radio exercise, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness among amateur radio operators.

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Filter (signal processing)

In signal processing, a filter is a device or process that removes some unwanted components or features from a signal.

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Finite-difference time-domain method

Finite-difference time-domain or Yee's method (named after the Chinese American applied mathematician Kane S. Yee, born 1934) is a numerical analysis technique used for modeling computational electrodynamics (finding approximate solutions to the associated system of differential equations).

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Five College Radio Astronomy Observatory

The Five College Radio Astronomical Observatory (FCRAO) was a radio astronomy observatory located on a peninsula in the Quabbin Reservoir.

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Florianturm

The Florianturm (Florian Tower, Florian for short) is a telecommunications tower and landmark of Dortmund (Germany).

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Flutter (electronics and communication)

In electronics and communication, flutter is the rapid variation of signal parameters, such as amplitude, phase, and frequency.

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FM (No Static at All)

"FM (No Static at All)" is a song by American jazz-rock band Steely Dan.

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FM broadcast band

The FM broadcast band, used for FM broadcast radio by radio stations, differs between different parts of the world.

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Ford Falcon (BA)

The Ford Falcon (BA) is a full-sized car produced by Ford Australia from 2002 to 2005.

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Fort de Kock

Fort de Kock was a 19th-century Dutch sconce fortification established over a hill in Bukittinggi, West Sumatra, Indonesia.

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Fort Ward (Washington)

Fort Ward is a former United States Army coastal artillery fort, and later, a Navy installation located on the southwest side of Bainbridge Island, Washington, along Rich Passage.

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Fortress of São João Baptista (Angra do Heroísmo)

The Fortress of São João Baptista (Forte de São João Baptista), also known as the Fort of São Filipe or Fort of Monte Brasil is a historic fortress and defensive emplacement, located in the civil parish of Sé, municipality of Angra do Heroísmo in the Portuguese island of Terceira, archipelago of the Azores.

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Foster's reactance theorem

Foster's reactance theorem is an important theorem in the fields of electrical network analysis and synthesis.

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Four Lanes

Four Lanes (Peder Bownder) is a village in west Cornwall, England, United Kingdom approximately south of Redruth at in the civil parish of Carn Brea.

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Fractal antenna

A fractal antenna is an antenna that uses a fractal, self-similar design to maximize the effective length, or increase the perimeter (on inside sections or the outer structure), of material that can receive or transmit electromagnetic radiation within a given total surface area or volume.

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Fraunhofer distance

The Fraunhofer distance, named after Joseph von Fraunhofer, is the value of: where D is the largest dimension of the radiator (in the case of a magnetic loop antenna, the diameter) and is the wavelength of the radio wave.

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Fred Judd

Frederick Charles (Fred) Judd, (1914–1992) is known for his work in amateur radio, particularly his designs of the Slim Jim and ZL Special aerial antennas.

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Fremont Point transmitting station

The Fremont Point transmitting station is a facility for FM and television transmission at Fremont, Vingtaine du Nord, Saint John, Jersey.

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Frenching (automobile)

Frenching is the act of recessing or moulding a headlight, taillight, antenna or number plate into a car body to give a smoother look to the vehicle.

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Frequency selective surface

A frequency-selective surface (FSS) is any thin, repetitive surface (such as the screen on a microwave oven) designed to reflect, transmit or absorb electromagnetic fields based on the frequency of the field.

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Fresnel zone antenna

Fresnel zone antennas are reflector antennas that focus the signal by using the phase shifting property of the antenna surface, rather than its shape.

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Friis transmission equation

The Friis transmission formula is used in telecommunications engineering, equating the power at the terminals of a receive antenna as the product of power density of the incident wave and the effective aperture of the receiving antenna under idealized conditions given another antenna some distance away transmitting a known amount of power.

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Funkabwehr

Funkabwehr, or Radio Defense Corps was a radio counterintelligence organization created in 1940 by Hans Kopp, of the German Nazi Party High Command, during World War II.

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Gain (electronics)

In electronics, gain is a measure of the ability of a two-port circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output port by adding energy converted from some power supply to the signal.

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Gakken EX-System

The Gakken EX-System is a series of educational electronics kits produced by Gakken in the late 1970s.

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Galileo (spacecraft)

Galileo was an American unmanned spacecraft that studied the planet Jupiter and its moons, as well as several other Solar System bodies.

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Gateway Arch

The Gateway Arch is a monument in St. Louis, Missouri, United States.

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General Packet Radio Service

General Packet Radio Service (GPRS) is a packet oriented mobile data standard on the 2G and 3G cellular communication network's global system for mobile communications (GSM).

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Georg von Arco

Georg Wilhelm Alexander Hans Graf von Arco (30 August 1869 in Großgorschütz – 5 May 1940 in Berlin) was a German physicist, radio pioneer, and one of the joint founders of the "Society for Wireless Telegraphy" which became the Telefunken company.

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George Harold Brown

George Harold Brown (14 October 1908 – 11 December 1987) was an American research engineer.

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George V. Eleftheriades

George V. Eleftheriades does pioneering research in the field of metamaterials.

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Georgia Tech Research Institute

The Georgia Tech Research Institute (GTRI) is the nonprofit applied research arm of the Georgia Institute of Technology in Atlanta, Georgia, United States.

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Geosynchronous satellite

A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period.

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Gerard J. Foschini

Gerard Joseph Foschini (born 1940 in Jersey City, New Jersey), is an American telecommunications engineer who has worked for Bell Laboratories since 1961.

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Gin pole

A gin pole, derived from gyn, is a supported pole that uses a pulley or block and tackle on its upper end to lift loads.

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Gizmotchy

A schematic drawing of a Gizmotchy antenna A Gizmotchy is an antenna developed in the early 1960s for citizens band radio by the Utica Radio Corporation.

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GL Mk. I radar

Gun Laying radar, Mark I, or GL Mk.

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Global horizontal sounding technique

The Global horizontal sounding technique (GHOST) program was an atmospheric field research project in the late 1960s for investigating the technical ability to gather weather data using hundreds of simultaneous long-duration balloons for very long-range global scale numerical weather prediction in preparation for the Global Atmospheric Research Program (GARP).

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Glossary of electrical and electronics engineering

Most of the terms listed in Wikipedia glossaries are already defined and explained within Wikipedia itself.

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GoldenEye 007 (1997 video game)

GoldenEye 007 is a first-person shooter video game developed by Rare and based on the 1995 James Bond film GoldenEye.

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Goldschmidt alternator

The Goldschmidt alternator or reflector alternator, invented in 1908 by German engineer Rudolph Goldschmidt, was a rotating machine which generated radio frequency alternating current and was used as a radio transmitter.

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Goldstone Deep Space Communications Complex

The Goldstone Deep Space Communications Complex (GDSCC), commonly called the Goldstone Observatory, is located in the Mojave Desert near Barstow in the U.S. state of California.

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Goubau line

A Goubau line or Sommerfeld-Goubau line, or G-line for short, is a single wire transmission line used to conduct radio waves at UHF and microwave frequencies.

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GPS aircraft tracking

GPS aircraft tracking is a means of tracking the position of an aircraft fitted with a GPS receiver.

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GPS puck

GPS puck has two meanings.

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Grand Junction, Tennessee

Grand Junction is a city in Hardeman and Fayette counties, Tennessee, in the United States.

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Grant Building

The Grant Building is 40-story, skyscraper at 310 Grant Street in downtown Pittsburgh, Pennsylvania.

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Grasshopper (robot weather station)

The Grasshopper was a project by the United States Air Force and US Navy to develop portable robot weather station deployed by parachute from long range aircraft in the early 1950s.

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GRE (company)

GRE (株式会社　ゼネラル　リサ－チ　オブ　エレクトロニックス General Research of Electronics, Inc.) was a Japan-based multinational manufacturer of electronics equipment, primarily in the fields of radio and other telecommunications.

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Great Dun Fell

At a height of 848 metres (2,782 feet), Great Dun Fell is the second-highest mountain in England's Pennines, lying two miles south along the watershed from Cross Fell, its higher neighbour.

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Green Bay Harbor Entrance Light

The Green Bay Harbor Entrance Light is an offshore lighthouse near Green Bay, Wisconsin.

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Green flash

Green flashes and green rays are optical phenomena that sometimes occur just after sunset or right before sunrise.

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Greenleaf Whittier Pickard

Greenleaf Whittier Pickard (February 14, 1877, Portland, Maine – January 8, 1956, Newton, Massachusetts) was a United States radio pioneer.

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Grid dip oscillator

Grid dip oscillator (GDO), also called grid dip meter, dip meter, dipmeter, or just dipper, is a measuring instrument to measure resonant frequency of radio frequency circuits.

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Grigoriopol transmitter

The Grigoriopol transmitter (Russian designation: Mayak Radio Centre) is a very large broadcasting facility situated near Maiac in Transnistria (Moldova), at the border with Ukraine.

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Grimeton Radio Station

Grimeton Radio Station in southern Sweden, close to Varberg in Halland, is an early longwave transatlantic wireless telegraphy station built in 1922-1924, that has been preserved as a historical site.

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Ground (electricity)

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth.

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Ground dipole

In radio communication, a ground dipole,, p.1692, on also referred to as an earth dipole antenna, transmission line antenna, and in technical literature as a horizontal electric dipole (HED), on is a huge, specialized type of radio antenna that radiates extremely low frequency (ELF) electromagnetic waves.

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Ground plane

In electrical engineering, a ground plane is an electrically conductive surface, usually connected to electrical ground.

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Ground-level power supply

Ground-level power supply, also known as surface current collection and Alimentation par le Sol (APS, which literally means feeding via the ground), is a modern method of third-rail electrical pick-up for street trams instead of more common overhead lines, thus it is one of the methods that could allow construction of catenary-free light rail system.

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Ground-penetrating radar

Ground-penetrating radar (GPR) is a geophysical method that uses radar pulses to image the subsurface.

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GSM

GSM (Global System for Mobile communications) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation digital cellular networks used by mobile devices such as tablets, first deployed in Finland in December 1991.

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GTRI Advanced Concepts Laboratory

The Advanced Concepts Laboratory (ACL), formerly the Signature Technology Laboratory, is one of eight labs in the Georgia Tech Research Institute and one of three labs under the Sensors and Intelligent Systems directorate.

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GTRI Sensors and Electromagnetic Applications Laboratory

The Sensors and Electromagnetic Applications Laboratory (SEAL) is one of eight labs in the Georgia Tech Research Institute and one of three labs under the Sensors and Intelligent Systems directorate.

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Guy-wire

A guy-wire, guy-line, or guy-rope, also known as simply a guy, is a tensioned cable designed to add stability to a free-standing structure.

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Guyed mast

A guyed mast is a tall thin vertical structure that depends on guy lines for stability.

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H2S (radar)

H2S was the first airborne, ground scanning radar system.

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HAARP (album)

HAARP is a live album and video by English rock band Muse, released on 17 March 2008 in the United Kingdom and 1 April 2008 in the United States.

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Haiku Valley

Haikū Valley is an amphitheater-shaped valley on the windward side of the Kookinaolau Range behind Kāneokinaohe, Ookinaahu in the Hawaiian Islands.

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Half-power point

The half-power point or half-power bandwidth is the frequency at which the output power has dropped to half of its peak value; that is, at a level of approximately -3 dB.

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Halo antenna

A halo antenna, or halo, is a horizontally polarized, omnidirectional wavelength dipole antenna, which has been bent into a loop with a small break on the side of the loop directly opposite the feed point.

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Hamid Jafarkhani

Hamid Jafarkhani (حمید جعفرخانی) (born 1966, in Tehran) is a Chancellor's Professor in electrical engineering and computer science at the University of California, Irvine's Henry Samueli School of Engineering.

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Hannington transmitting station

Hannington transmitting station is a television and radio transmitting station located on Cottington Hill near the village of Hannington.

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Hannover Fairground

The Hanover Fairground (in German: Messegelände Hannover) is an exhibition area in the Mittelfeld district of Hanover, Germany.

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Hardware Trojan

A Hardware Trojan (HT) is a malicious modification of the circuitry of an integrated circuit.

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Harold A. Zahl

Harold Adelbert Zahl (August 24, 1904 – March 11, 1973) was an American physicist who had a 35-year career with the U.S. Army Signal Corps Laboratories, making major contributions to radar development.

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Harold Alden Wheeler

Harold Alden Wheeler (May 10, 1903 - April 25, 1996) was a noted American electrical engineer.

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Harris Corporation

Harris Corporation is an American technology company, defense contractor and information technology services provider that produces wireless equipment, tactical radios, electronic systems, night vision equipment and both terrestrial and spaceborne antennas for use in the government, defense and commercial sectors.

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Hata model

The Hata model is a radio propagation model for predicting the path loss of cellular transmissions in exterior environments, valid for microwave frequencies from 150 to 1500 MHz.

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HCT Co., Ltd.

HCT Co., Ltd. is a compliance testing and equipment calibration company which also develops particle counters and antennas located in South Korea.

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HD Radio

HD Radio is a trademarked term for iBiquity's in-band on-channel (IBOC) digital radio technology used by AM and FM radio stations to transmit audio and data by using a digital signal embedded "on-frequency" immediately above and below a station's standard analog signal, providing the means to listen to the same program in either HD (digital radio with less noise) or as a standard broadcast (analog radio with standard sound quality).

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Headend in the Sky

Headend in the Sky (HITS) is Comcast's satellite multiplex service that provides cable channels to cable television operations.

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Hearing aid

A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss.

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Heathfield transmitting station

The Heathfield transmitting station is a facility for FM and television transmission at Heathfield, East Sussex, UK (grid reference TQ566220).

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Height above ground level

In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL) is a height measured with respect to the underlying ground surface.

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Heinrich Hertz

Heinrich Rudolf Hertz (22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of the electromagnetic waves theorized by James Clerk Maxwell's electromagnetic theory of light.

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Heinz Kaminski

Heinz Kaminski (born 15 June 1921 in Bochum; died 17 February 2002 in Arnsberg) was a German chemical engineer and space researcher.

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Helical antenna

A helical antenna is an antenna consisting of one or more conducting wires (monofilar, bifilar, or quadrifilar with 1, 2, or 4 wires respectively) wound in the form of a helix.

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Helicon double-layer thruster

The helicon double-layer thruster is a prototype spacecraft propulsion engine.

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Helix building

A helix building is a small structure at the base of a longwave or mediumwave radio transmitter.

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Henry Margenau

Henry Margenau (April 30, 1901 – February 8, 1997) was a German-American physicist, and philosopher of science.

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Henschel Hs 129

The Henschel Hs 129 was a World War II ground-attack aircraft fielded by the German Luftwaffe.

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Heusweiler radio transmitter

The Heusweiler transmitter is a facility for medium wave broadcasting near Heusweiler, Germany, which originally went into service on 23 December 1935.

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Hexaflake

A hexaflake is a fractal constructed by iteratively exchanging each hexagon by a flake of seven hexagons;.

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HFSS

HFSS is a commercial finite element method solver for electromagnetic structures from Ansys.

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High frequency

High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz).

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High Frequency Active Auroral Research Program

The High Frequency Active Auroral Research Program (HAARP) was initiated as an ionospheric research program jointly funded by the U.S. Air Force, the U.S. Navy, the University of Alaska Fairbanks, and the Defense Advanced Research Projects Agency (DARPA).

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High voltage

The term high voltage usually means electrical energy at voltages high enough to inflict harm on living organisms.

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High-capacity data radio

High-capacity data radio (HCDR) is a development of the Near-Term Digital Radio (NTDR) for the UK government as a part of the Bowman communication system.

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High-frequency direction finding

High-frequency direction finding, usually known by its abbreviation HF/DF or nickname huff-duff, is a type of radio direction finder (RDF) introduced in World War II.

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High-intensity radiated field

A high-intensity radiated field (HIRF) is radio-frequency energy of a strength sufficient to adversely affect either a living organism or the performance of a device subjected to it.

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High-speed multimedia radio

High-speed multimedia radio (HSMM) is the implementation of wireless data networks over amateur radio frequencies using commercial off-the-shelf (COTS) hardware such as 802.11 access points.

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HIPAS Observatory

The HIPAS (HIgh Power Auroral Stimulation) Observatory was a research facility intended to study the ionosphere and its influence on radio communications.

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History of personal computers

The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1980s.

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History of radar

The history of radar (where radar stands for RAdio Detection And Ranging) started with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects.

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History of Rugby, Warwickshire

This is about the history of the town of Rugby, Warwickshire, England.

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History of submarines

Beginning in ancient times, humans sought to operate under the water.

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History of the Tesla coil

Nikola Tesla patented the Tesla coil circuit on April 25, 1891.

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HMS Exeter (68)

HMS Exeter was the second and last heavy cruiser built for the Royal Navy during the late 1920s.

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HMS Starfish (1895)

HMS Starfish was a which served with the Royal Navy.

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Holden Caprice (VQ)

The Holden Caprice (VQ) and Holden Statesman (VQ) were Holden's top of the line luxury sedans produced between 1990 and 1994.

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Holden Commodore (VN)

The Holden Commodore (VN) is a full-size car that was produced by the Australian manufacturer Holden from 1988 to 1991.

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Hooiberg

Hooiberg is a high volcanic formation on the island of Aruba.

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Horizontal plane

In geometry, physics, astronomy, geography, and related sciences, a plane is said to be horizontal at a given point if it is perpendicular to the gradient of the gravity field at that point – in other words, if apparent gravity makes a plumb bob hang perpendicular to the plane at that point.

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Horn antenna

A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam.

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Houlton, Maine

Houlton is a town in Aroostook County, Maine, on the Canada–US border, located at.

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HTC Universal

The HTC Universal is a Windows Mobile 5.0 Pocket PC PDA manufactured by High Tech Computer Corporation.

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Humbucker

A humbucking pickup, humbucker, or double coil, is a type of electric guitar pickup that uses two coils to "buck the hum" (or cancel out the interference) picked up by coil pickups caused by electromagnetic interference, particularly mains hum.

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Hurricane Frederic

Hurricane Frederic was an intense and damaging tropical cyclone that carved a path of damage from the Lesser Antilles to Quebec, in particular devastating areas of the United States Gulf Coast.

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Hurricane Janet

Hurricane Janet was the most powerful tropical cyclone of the 1955 Atlantic hurricane season and one of the strongest Atlantic hurricanes on record.

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Hy-Gain Antennas and Rotators

Hy-Gain (often written "hy-gain") is a manufacturer of antenna and antenna related products for the amateur radio industry.

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Hybrid coil

A hybrid coil (or bridge transformer, or sometimes hybrid) is a transformer that has three windings, and which is designed to be configured as a circuit having four ports that are conjugate in pairs.

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Ici Radio-Canada Télé

Ici Radio-Canada Télé (stylized as ICI Radio-Canada TēLē, and formerly known as Télévision de Radio-Canada) is a Canadian French-language broadcast television network that is owned by the Canadian Broadcasting Corporation (known in French as Société Radio-Canada), the national public broadcaster.

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IEEE Antennas & Propagation Society

The IEEE Antennas and Propagation Society (AP-S) is a society of the IEEE.

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IEEE Antennas and Wireless Propagation Letters

IEEE Antennas and Wireless Propagation Letters is an annual peer-reviewed scientific journal with the goal of rapid dissemination of short manuscripts in the antennas and wireless propagation domains.

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IEEE Transactions on Antennas and Propagation

IEEE Transactions on Antennas and Propagation is a peer-reviewed scientific journal published by the IEEE Antennas & Propagation Society.

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ILC Dover

ILC Dover, LP (also known as ILC) is an American special engineering development and manufacturing company based in Frederica, Delaware.

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Image antenna

In telecommunications and antenna design, an image antenna is an electrical mirror-image of an antenna element formed by the radio waves reflecting from a conductive surface called a ground plane, such as the surface of the earth.

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Impedance bridging

In electronics, especially audio and sound recording, a high impedance bridging, voltage bridging, or simply bridging connection is one in which the load impedance is much larger than the source impedance.

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Impedance matching

In electronics, impedance matching is the practice of designing the input impedance of an electrical load or the output impedance of its corresponding signal source to maximize the power transfer or minimize signal reflection from the load.

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Improvised firearm

An improvised firearm (sometimes called a zip gun) is a firearm manufactured other than by a firearms manufacturer or a gunsmith, and is typically constructed by adapting existing materials to the purpose.

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Index of electrical engineering articles

This is an alphabetical list of articles pertaining specifically to electrical and electronics engineering.

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Index of electronics articles

This is an index of articles relating to electronics and electricity or natural electricity and things that run on electricity and things that use or conduct electricity.

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Index of radiation articles

* absorbed dose.

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Indian Americans

Indian Americans or Indo-Americans are Americans whose ancestry belongs to any of the many ethnic groups of the Republic of India.

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Indian Deep Space Network

Indian Deep Space Network (IDSN) is a network of large antennas and communication facilities operated by the Indian Space Research Organisation to support the interplanetary spacecraft missions of India.

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Indoor antenna

An Indoor antenna is a type of radio or TV antenna placed indoors, as opposed to being mounted on the roof.

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Indosiar Television Tower

The Indosiar Television Tower is a guyed mast used for FM- and TV-broadcasting in West Jakarta, Indonesia, completed in 2006.

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Inductive coupling

In electrical engineering, two conductors are referred to as inductively coupled or magnetically coupled when they are configured such that a change in current through one wire induces a voltage across the ends of the other wire through electromagnetic induction.

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Input impedance

The input impedance of an electrical network is the measure of the opposition to current flow (impedance), both static (resistance) and dynamic (reactance), into the load network being that is external to the electrical source.

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Instrument landing system

An instrument landing system (ILS) enables pilots to conduct an instrument approach to landing if they are unable to establish visual contact with the runway.

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Insulator (electricity)

An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field.

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Integrated topside design

Integrated topside design is a design approach used by military ship and ship equipment designers to overcome the challenges of effectively operating shipboard antenna systems and equipment susceptible to electromagnetic fields in the high electromagnetic environment of a warship's topside.

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Intelsat 24

Intelsat 24, previously Amos-1, is a commercial communication satellite which is operated by Intelsat.

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Intelsat IV F-3

Intelsat IV F-3 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-1

Intelsat IVA F-1 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-2

Intelsat IVA F-2 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-3

Intelsat IVA F-3 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-4

Intelsat IVA F-4 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-5

Intelsat IVA F-5 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intelsat IVA F-6

Intelsat IVA F-6 was a geostationary communication satellite built by Hughes, it was owned by Intelsat.

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Intensity interferometer

An intensity interferometer is the name given to devices that use the Hanbury Brown and Twiss effect.

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Intercarrier method

The intercarrier method is a system in television that reduces the cost of transmitters and receiver sets by processing audio and video signals together and minimizing the number of separate stages for audio and video signals.

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Interferometric synthetic-aperture radar

Interferometric synthetic aperture radar, abbreviated InSAR (or deprecated IfSAR), is a radar technique used in geodesy and remote sensing.

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Intermediate-field region

Intermediate-field region: For an antenna, the transition region--lying between the near-field region and the far-field region--in which the field strength of an electromagnetic wave is dependent upon the inverse distance, inverse square of the distance, and the inverse cube of the distance from the antenna.

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International Cospas-Sarsat Programme

The International Cospas-Sarsat Programme is a treaty-based, nonprofit, intergovernmental, humanitarian cooperative of 44 nations and agencies (see box on right) dedicated to detecting and locating radio beacons activated by persons, aircraft or vessels in distress, and forwarding this alert information to authorities that can take action for rescue.

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International Space Station

The International Space Station (ISS) is a space station, or a habitable artificial satellite, in low Earth orbit.

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Invention of radio

Many people were involved in the invention of radio as we know it today.

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Inverse synthetic-aperture radar

Inverse synthetic aperture radar (ISAR) is a radar technique using Radar imaging to generate a two-dimensional high resolution image of a target.

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Inversion (meteorology)

In meteorology, an inversion is a deviation from the normal change of an atmospheric property with altitude.

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Inverted vee antenna

An inverted vee antenna is a type of antenna similar to a horizontal dipole, but with the two sides bent down towards the ground, typically creating a 120 or 90 degree angle between the dipole legs.

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Inverted-F antenna

An inverted-F antenna is a type of antenna used in wireless communication.

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Ion thruster

An ion thruster or ion drive is a form of electric propulsion used for spacecraft propulsion.

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Ionospheric heater

An ionospheric heater, or an ionospheric HF pump facility, is a powerful radio wave transmitter with an array of antennas which is used for research of plasma turbulence, the ionosphere and upper atmosphere.

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IPhone

iPhone is a line of smartphones designed and marketed by Apple Inc. The iPhone line of products use Apple's iOS mobile operating system software.

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IRT Flushing Line

The IRT Flushing Line is a rapid transit route of the New York City Subway system, operated as part of the A Division.

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Ismaning radio transmitter

The Transmitter Ismaning was a large radio transmitting station near Ismaning, Bavaria, Germany.

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Isotron

Isotron is the trade name for a shortwave antenna marketed by Bilal Co.

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Isotropic radiator

An isotropic radiator is a theoretical point source of electromagnetic or sound waves which radiates the same intensity of radiation in all directions.

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Isotropy

Isotropy is uniformity in all orientations; it is derived from the Greek isos (ἴσος, "equal") and tropos (τρόπος, "way").

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ITV Wales & West

ITV Wales and West, previously known as HTV, refers to the Independent Television franchise area until 31 December 2013, licensed to a broadcaster by the regulator Ofcom.

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J-pole antenna

The J-pole antenna, more properly known as the J antenna, was first invented by Hans Beggerow in 1909 for use in Zeppelin airships.

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James Clerk Maxwell Telescope

The James Clerk Maxwell Telescope (JCMT) is a submillimetre-wavelength telescope at Mauna Kea Observatory in Hawaii.

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Japanese aircraft carrier Amagi

was a built for the Imperial Japanese Navy during World War II.

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Japanese aircraft carrier Katsuragi

was the third and final of the Imperial Japanese Navy built during World War II.

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Japanese aircraft carrier Unryū

The Japanese aircraft carrier was the lead ship of her class of fleet aircraft carriers built for the Imperial Japanese Navy (IJN) during World War II.

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JenTower

The JenTower is a skyscraper in Jena, Germany.

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Jicamarca Radio Observatory

The Jicamarca Radio Observatory (JRO) is the equatorial anchor of the Western Hemisphere chain of Incoherent Scatter Radar (ISR) observatories extending from Lima, Peru to Søndre Strømfjord, Greenland.

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Jim Creek Naval Radio Station

Jim Creek Naval Radio Station is a United States Navy very low frequency (VLF) radio transmitter facility at Jim Creek near Oso, Washington.

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JJY

JJY is the call sign of a low frequency time signal radio station located in Japan.

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Joffrey Tower

The Joffrey Tower is a high-rise commercial real estate development on the northeast corner of North State Street and East Randolph Street in the Loop community area of Chicago in Cook County, Illinois, United States that is the permanent home of the Joffrey Ballet.

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John Berkey

John Berkey (August 13, 1932 – April 29, 2008) was an American artist known for his space- and science fiction-themed works.

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John D. Kraus

John Daniel Kraus (June 28, 1910 – July 18, 2004) was an American physicist known for his contributions to electromagnetics, radio astronomy, and antenna theory.

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John D. Lawson (scientist)

John David Lawson FRS (4 April 1923 – 15 January 2008) was a British engineer and physicist.

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John Francis Mitchell

John Francis Mitchell (January 1, 1928 – June 9, 2009) was an American electronics engineer and President & COO of Motorola.

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John Stone Stone

John Stone Stone (September 24, 1869 – May 20, 1943) was an American mathematician, physicist and inventor.

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Junglinster Longwave Transmitter

The Junglinster Longwave Transmitter is a longwave broadcasting facility used by RTL near Junglinster, Luxembourg, which went into service in 1932.

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Juno (spacecraft)

Juno is a NASA space probe orbiting the planet Jupiter.

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JY-8 Radar

The JY-8 is a mobile 3D air surveillance, target acquisition and interception control radar system operating in the C-band.

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JY-9 Radar

The JY-9 Radar is a mobile S-band low altitude search radar intended for use in air defense, gap filling, airport surveillance and coastal defense.

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K-UTE

K-UTE Radio is a college radio station broadcasting via the internet to the campus of the University of Utah and around the world.

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Kabal (Mortal Kombat)

Kabal is a fictional character in the Mortal Kombat fighting game franchise, created for Midway Games by Ed Boon and John Tobias.

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Karl Guthe Jansky

Karl Guthe Jansky (October 22, 1905 – February 14, 1950) was an American physicist and radio engineer who in August 1931 first discovered radio waves emanating from the Milky Way.

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KATV tower

The KATV tower was a 2000 ft (609.6 m) tall television mast (or antenna tower) built near Redfield, Arkansas in 1967 at.

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Kármán vortex street

In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid around blunt bodies.

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Königs Wusterhausen Central Tower

Königs Wusterhausen Central Tower was a, free standing steel framework tower on the Funkerberg of Königs Wusterhausen, Germany.

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Königs Wusterhausen radio transmitter

The Königs Wusterhausen transmitter (Sender Königs Wusterhausen) was a large transmission facility for longwave, mediumwave and shortwave radio, located near Königs Wusterhausen southeast of Berlin, Germany.

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KCBQ

KCBQ (1170 kHz "1170 The Answer") is a commercial AM radio station in San Diego, California.

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KCMP

KCMP (89.3 FM, 89.3 The Current), is a radio station owned by Minnesota Public Radio (MPR) that broadcasts a AAA music format including a significant rotation of songs by local artists.

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KDAV

KDAV (1590 AM) is an American radio station licensed to serve the community of Lubbock, Texas.

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KDGE

KDGE (102.1 MHz, "Star 102.1") is a commercial FM radio station licensed to both Fort Worth and Dallas, Texas.

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Kennesaw Mountain

Kennesaw Mountain is a high-running ridge between Marietta and Kennesaw, Georgia in the United States with a summit elevation of.

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KESU-LP (defunct)

KESU-LP was a low-power television station, broadcasting on VHF channel 6 and serving the Kauai area.

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KETV

KETV, virtual channel 7 (UHF digital channel 20), is an ABC-affiliated television station licensed to Omaha, Nebraska, United States and also serving Council Bluffs, Iowa.

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Kirk o'Shotts transmitting station

The Kirk o'Shotts transmitting station is a broadcasting and telecommunications site at The Hirst which lies just outside the village of Salsburgh which is near the town of Shotts in North Lanarkshire central Scotland.

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Kiruna Station

Kiruna Station is an ESTRACK radio antenna station for communication with spacecraft operated by the Swedish Space Corporation.

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Kisandol

Kisandol is a small village (aspiring to be a city soon) located at a distance of about 9 km from Kathmandu, the capital city of Nepal.

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Kitzbüheler Horn Transmitter

The Kitzbüheler Horn Transmitter (Sender Kitzbüheler Horn) is a 102 metre high transmission tower made of reinforced concrete on the summit of the Kitzbüheler Horn near Kitzbühel in Austria.

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KKOL (AM)

KKOL AM 1300 is a radio station located in Seattle, Washington.

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KMSP-TV

KMSP-TV, virtual and VHF digital channel 9, is a Fox owned-and-operated television station licensed to Minneapolis, Minnesota, United States.

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KMTX (FM)

KMTX (105.3 FM, "Helena's Best Variety") is a radio station licensed to serve Helena, Montana.

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KNND

KNND (1400 AM) is a radio station licensed to serve Cottage Grove, Oregon, United States.

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KOBR

KOBR is an NBC-affiliated television station licensed to Roswell, New Mexico, United States and also serving Carlsbad.

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KORB

KORB is a non-commercial educational broadcast radio station licensed to and serving Hopland, California.

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KORN-FM

KORN-FM (92.1 FM, KORN Country 92.1), is a country music radio station with its studio based in Mitchell, South Dakota.

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Kosmonavt Yuriy Gagarin

Kosmonavt Yuriy Gagarin («Космона́вт Ю́рий Гага́рин») was a Soviet space control-monitoring ship or Vigilship (Veladora) that was devoted to detecting and receiving satellite communications.

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KRAI-FM

KRAI-FM (93.7 FM) is a radio station licensed to Craig, Colorado, United States.

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Krasny Bor transmitter

Krasny Bor transmitter is a large facility for longwave, mediumwave and shortwave broadcasting at Krasny Bor near Saint Petersburg, Russia.

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KRLQ

KRLQ (94.1 FM) is a radio station broadcasting a classic country music format.

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KTUL

KTUL, virtual channel 8 (VHF digital channel 10), is an ABC-affiliated television station licensed to Tulsa, Oklahoma, United States.

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KTVO-TV Tower

The KTVO-TV Tower was a 2000 ft (609.6 m) tall television mast (or antenna tower) built near Colony, Missouri that collapsed on June 3, 1988, as workers were replacing structural braces.

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Kuala Lumpur Tower

The Kuala Lumpur Tower (KL Tower; Menara Kuala Lumpur) is a communications tower located in Kuala Lumpur, Malaysia.

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Kustom (cars)

Kustoms are modified cars from the 1930s to the early 1960s, done in the customizing styles of that time period.

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KYDQ

KYDQ (92.1 MHz) is a radio station serving the North County of San Diego County, California.

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Lafayette transmitter

Lafayette transmitter was a large facility used for transatlantic VLF-transmission, located at Marcheprime, Aquitaine, France.

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Lahti longwave transmitter

The Lahti longwave transmitter was a facility for longwave transmission at Lahti, Finland.

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Lake Placid, Florida

Lake Placid is a town in Highlands County, Florida, United States.

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Langenberg transmission tower

The Langenberg transmission tower (also translated as "Sender Langenberg" or "Transmission Facility Langenberg") is a broadcasting station that transmits MW, FM and TV signals.

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Late-May 2010 tornado outbreak

The Late May 2010 Tornado Outbreak was a tornado outbreak that begun on May 22, 2010 and ended May 25.

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Lattice tower

A lattice tower or truss tower is a freestanding framework tower.

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Launch and Early Orbit phase

In spacecraft operations, The Launch and Early Orbit phase (LEOP) is one of the most critical phases of a mission.

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Leaky feeder

A leaky feeder is a communications system used in underground mining and other tunnel environments.

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Leonard Lewin (telecommunications engineer)

Leonard Lewin (22 July 1919 – 13 August 2007) was a British telecommunications engineer and educator.

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Lester Picker

Lester Picker (September 26, 1905 – May 10, 1930) was an American amateur radio operator famous in the early 1920s.

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Levent Gürel

Levent Gürel (born 1964 in Izmir, Turkey; transliterated as Levent Gurel) is a Turkish scientist and electrical engineer.

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Lexington-class aircraft carrier

The Lexington-class aircraft carriers were a pair of aircraft carriers built for the United States Navy (USN) during the 1920s.

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Lexus LS

The Lexus LS (Japanese: レクサス・LS, Rekusasu LS) is a full-size luxury car (F-segment in Europe) serving as the flagship model of Lexus, the luxury division of Toyota.

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Linda Katehi

Linda Pisti Basile Katehi-Tseregounis (born January 30, 1954) is a Greek-American engineering professor and former university administrator.

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Linda M. Godwin

Linda Maxine Godwin Ph.D. (born July 2, 1952) is an American scientist and retired NASA astronaut.

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Lindsay Building

The Lindsay Building is a ten-storey building in Downtown Winnipeg, Manitoba.

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Line source

A line source, as opposed to a point source, area source, or volume source, is a source of air, noise, water contamination or electromagnetic radiation that emanates from a linear (one-dimensional) geometry.

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Line-of-sight propagation

Line-of-sight propagation is a characteristic of electromagnetic radiation or acoustic wave propagation which means waves travel in a direct path from the source to the receiver.

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Linienzugbeeinflussung

Linienzugbeeinflussung (or LZB) is a cab signalling and train protection system used on selected German and Austrian railway lines as well as the AVE in Spain.

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List of astronomy acronyms

This is a compilation of initialisms and acronyms commonly used in astronomy.

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List of Atlanta broadcast stations by location

The following broadcast stations in the Atlanta metropolitan area all have radio antennas on the named building or radio tower, or within 100 meters or 330 feet of the summit of the mountain, and are listed with call sign, frequency or channel, community of license, and licensee/owner.

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List of auto parts

This is a list of automotive parts mostly for vehicles using internal combustion engines which are manufactured components of automobiles.

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List of balloon uses

This is a list of uses of balloons.

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List of buildings and structures in Switzerland above 3000 m

This is a list of buildings and infrastructures above in Switzerland.

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List of electrical engineers

This is a list of electrical engineers (by no means exhaustive), people who have made notable contributions to electrical engineering or computer engineering.

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List of free-to-air channels in New Zealand

This article is a list of free-to-air channels in New Zealand.

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List of IEEE milestones

This list of IEEE Milestones describes the Institute of Electrical and Electronics Engineers (IEEE) milestones, representing key historical achievements in electrical and electronic engineering.

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List of International Space Station spacewalks

International Space Station spacewalks are major events in the building and maintaining of the orbital laboratory.

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List of Kipper episodes

This is a list of episodes from the British animated television series Kipper.

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List of loanwords in Tagalog

The Tagalog language has developed a unique vocabulary since its inception from its Austronesian roots.

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List of Mad episodes

This is a list of the episodes of Mad, an animated sketch comedy television series inspired by Mad Magazine that aired on Cartoon Network.

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List of Marconi wireless stations

A list of early wireless telegraphy radio stations of the Marconi Wireless Telegraph Co.

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List of Mil Mi-24 variants

The Russian Mil Mi-24 helicopter has had a large number of variants.

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List of Mystery Hunters episodes

The following episodes are from Mystery Hunters.

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List of Power Rangers Ninja Steel characters

Power Rangers Ninja Steel is an American children's television series that airs on Nickelodeon.

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List of radars

This is a list of radars.

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List of Radioskugga episodes

The SVT drama Radioskugga follows radio host Alexander and the villagers in small town Bakvattnet.

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List of Southern Methodist University people

This is a list of notable alumni, faculty, and students of Southern Methodist University.

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List of spacewalks 2000–2014

This list contains all spacewalks performed between 12 May 2000 and 22 October 2014 where an astronaut fully or partially left a spacecraft.

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List of tallest buildings and structures

The world's tallest artificial structure is the Burj Khalifa in Dubai (of the United Arab Emirates).

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List of tallest buildings and structures in Leicester

This list of tallest buildings and structures in Leicester ranks the loftiest buildings in Leicester, United Kingdom by height.

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List of tallest buildings in Adelaide

This list of tallest buildings in Adelaide ranks the tallest buildings in Adelaide, South Australia by height.

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List of tallest buildings in Africa

This article ranks the tallest buildings on the African continent by height.

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List of tallest buildings in Cairns

This is a list of the tallest buildings in Cairns, Queensland, Australia.

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List of tallest buildings in Canberra

This List of tallest buildings in Canberra ranks the tallest in Australia's capital city by height.

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List of tallest buildings in Chatswood

These are lists of the tallest buildings in Chatswood, Sydney, New South Wales, Australia.

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List of tallest buildings in Darwin

This list of tallest buildings in Darwin ranks skyscrapers in the Australian city of Darwin by height to the highest architectural detail.

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List of tallest buildings in Hobart

This list of tallest buildings in Hobart ranks the tallest in the Australian city of Hobart by height.

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List of tallest buildings in Lithuania

This is a list of tallest buildings in Lithuania.

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List of tallest buildings in Montreal

This is a list of the tallest buildings in Montreal that ranks skyscrapers in the city of Montreal, Quebec, Canada, by height.

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List of tallest buildings in New York City

New York City, the most populous city in the United States, is home to over 6486 completed high rise buildings of at least 35 meters, of which at least 113 completed are taller than.

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List of tallest buildings in Parramatta

These are lists of the tallest buildings in Parramatta, Sydney, New South Wales, Australia in the metropolitan area of Sydney.n accordance with CTBUH guidelines, heights are measured to the structural height, which includes architectural elements, such as spires, but not communications antennas.

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List of tallest buildings in Perth

File:Brookfield Place (Perth) tower from nw.jpg| File:From the west on a sunday.jpg| This list of tallest buildings in Perth ranks skyscrapers in the Australian city of Perth by height to the highest architectural detail.

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List of tallest buildings in Townsville

This is a list of the tallest buildings in Townsville, Queensland, Australia.

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List of tallest buildings in Wellington

This list of tallest buildings in Wellington ranks the tallest in the New Zealand capital city of Wellington by height.

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List of tallest buildings in Wollongong

This is a list of the tallest buildings in Wollongong, New South Wales, Australia.

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List of tallest buildings on the Gold Coast

These are lists of the tallest buildings on the Gold Coast, Queensland, Australia.

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List of tallest structures – 400 to 500 metres

This is a part of the list of tallest structures in the world, past and present of any type.

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List of tallest structures in Canada

This is a list of the tallest one hundred structures in Canada, measured from the base to the tallest point.

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List of tallest structures in Serbia

These lists of tallest structures in Serbia rank structures in Serbia by absolute height and buildings by official height.

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List of United States Marine Corps acronyms and expressions

This is a list of acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Marine Corps.

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List of United States tornadoes in April 2015

This is a list of all tornadoes that were confirmed by local offices of the National Weather Service in the United States in April 2015.

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List of World War II British naval radar

This page is a List of World War II British naval radar.

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Llanddona transmitting station

The Llanddona transmitting station is a broadcasting and telecommunications facility, situated at Llanddona, near Beaumaris, on the isle of Anglesey, Wales.

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Lloyd in Space

Lloyd in Space is an American animated television series, created by Joe Ansolabehere and Paul Germain (previous creators of Recess), and premiered in 2001 on ABC-TV on Saturday mornings.

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Loading coil

A loading coil or load coil is an inductor that is inserted into an electronic circuit to increase its inductance.

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Lobe switching

Lobe switching is a method used on early radar sets to improve tracking accuracy.

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Lockheed AC-130

The Lockheed AC-130 gunship is a heavily armed, long-endurance ground-attack variant of the C-130 Hercules transport fixed-wing aircraft.

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Log-periodic antenna

A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional antenna designed to operate over a wide band of frequencies.

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Long Range Desert Group

The Long Range Desert Group (LRDG) was a reconnaissance and raiding unit of the British Army during the Second World War.

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Longwave transmitter Europe 1

The Longwave transmitter Europe 1 is the oldest privately owned radio station in Germany, situated between and Berus/Saar, Germany.

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Loop antenna

A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor usually fed by a balanced source or feeding a balanced load.

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LORAN-C transmitter Carolina Beach

LORAN-C transmitter Carolina Beach was the Zulu secondary station of the U.S. Southeast chain (GRI 7270) with a transmission power of 800 kW.

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LORAN-C transmitter Johnston Island

LORAN-C transmitter Johnston Island was a LORAN-C transmitter on Johnston Atoll, in the mid-Pacific Ocean.

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Lorenz beam

The Lorenz beam was blind-landing radio navigation system developed by C. Lorenz AG in Berlin.

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Low-frequency radio range

The low-frequency radio range (LFR), also known as the four-course radio range, LF/MF four-course radio range, A-N radio range, Adcock radio range, or commonly "the range", was the main navigation system used by aircraft for instrument flying in the 1930s and 1940s, until the advent of the VHF omnidirectional range (VOR), beginning in the late 1940s.

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Low-noise amplifier

A low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.

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Low-noise block downconverter

A low-noise block downconverter (LNB) is the receiving device mounted on satellite dishes used for satellite TV reception, which collects the radio waves from the dish and converts them to a signal which is sent through a cable to the receiver inside the building.

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LPD433

LPD433 (low power device 433 MHz) is a UHF band in which licence free communication devices are allowed to operate in some regions.

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Luna 3

Luna 3, or E-2A No.1 was a Soviet spacecraft launched in 1959 as part of the Luna programme.

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Lunar Orbital Station

The Lunar Orbital Station is a proposed Russian space station in orbit around the Moon.

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Lunokhod 1

Lunokhod 1 (Луноход, moon walker in Russian; Аппарат 8ЕЛ № 203, vehicle 8ЕЛ№203) was the first of two unmanned lunar rovers landed on the Moon by the Soviet Union as part of its Lunokhod program.

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M-1956 Load-Carrying Equipment

The M-1956 Load-Carrying Equipment (LCE), also known as the Individual Load-Carrying Equipment (ILCE), replaced the M-1945 Combat Pack in the early 1960s.

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M. V. Lomonosov School of Electrotechnics and Electronics

The M. V. Lomonosov School of Electro-technics and Electronics (Професионална гимназия по електротехника и електроника,(Professional College of Electrical and Electronic engineering) is a Bulgarian professional Engineering school and one of the most selective technical schools in Bulgaria. The school is located in Gorna Oryahovitsa.

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Macchi C.202

The Macchi C.202 Folgore (Italian "thunderbolt") was an Italian fighter aircraft developed and manufactured by Macchi Aeronautica.

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Macquarie Sports Radio 882

Macquarie Sports Radio (ACMA callsign: 4BH) is a radio station in Brisbane, the state capital of Queensland, Australia.

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MagBeam

MagBeam is the name given to an ion propulsion system for space travel initially proposed by Professor Robert Winglee of the Earth and Space Sciences Department at the University of Washington for the October 2004 meeting of the NIAC.

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Magnetic current

Magnetic current is, nominally, a current composed of fictitious moving magnetic monopoles.

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Magnetic detector

The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.

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Magnetic resonance force microscopy

Magnetic resonance force microscopy (MRFM) is an imaging technique that acquires magnetic resonance images (MRI) at nanometer scales, and possibly at atomic scales in the future.

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Main lobe

In a radio antenna's radiation pattern, the main lobe, or main beam, is the lobe containing the higher power.

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Mainflingen transmitter

The Mediumwave transmitter Mainflingen (Mainflingen B) is a mediumwave transmission facility south of the A3 motorway near Mainflingen, Hesse, Germany.

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Malabar Radio Station

Malabar Radio Station was a VLF radio telegraphic transmitter in Malabar, Indonesia (coordinates), for a radio link to the Netherlands.

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Malargüe Station

Malargüe Station (also known as DSA 3 or Deep Space Antenna 3) is a 35-metre ESTRACK radio antenna in Argentina.

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Marconi's law

Marconi's law is the relation between height of antennas and maximum signaling distance of radio transmissions.

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Maria Arredondo

Maria Arredondo (born 6 July 1985 in Vennesla, Norway) is a Norwegian pop singer.

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Marine radar

Marine radars are X band or S band radars on ships, used to detect other ships and land obstacles, to provide bearing and distance for collision avoidance and navigation at sea.

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Marine VHF radio

Marine VHF radio refers to the radio frequency range between 156 and 174 MHz, inclusive.

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Mariner 2

Mariner 2 (Mariner-Venus 1962), an American space probe to Venus, was the first robotic space probe to conduct a successful planetary encounter.

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Marisat

Marisat satellites were the first maritime telecommunications satellites and were designed to provide dependable telecommunications for commercial shipping and the U.S. Navy from stable geosynchronous orbital locations over the three major ocean regions.

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Maritime Vsat

Maritime VSAT is the use of satellite communication through a Very-Small-Aperture Terminal (VSAT) on a moving ship at sea.

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Marker beacon

A marker beacon is a particular type of VHF radio beacon used in aviation, usually in conjunction with an instrument landing system (ILS), to give pilots a means to determine position along an established route to a destination such as a runway.

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Mars Exploration Rover

NASA's Mars Exploration Rover (MER) mission is an ongoing robotic space mission involving two Mars rovers, Spirit and Opportunity, exploring the planet Mars.

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Mars Outpost

Mars Outpost is a concept for a human base on the planet Mars that was developed by the United States in the 1980s.

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Mars Science Laboratory

Mars Science Laboratory (MSL) is a robotic space probe mission to Mars launched by NASA on November 26, 2011, which successfully landed Curiosity, a Mars rover, in Gale Crater on August 6, 2012.

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Martin Sweeting

Sir Martin Nicholas Sweeting One or more of the preceding sentences incorporates text from the royalsociety.org website where: (born 12 March 1951) is the founder and executive chairman of Surrey Satellite Technology Ltd (SSTL).

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Martin/General Dynamics RB-57F Canberra

The Martin/General Dynamics RB-57F Canberra is a specialized strategic reconnaissance aircraft developed in the 1960s for the United States Air Force by General Dynamics from the Martin B-57 Canberra tactical bomber, which itself was a license-built version of the English Electric Canberra.

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Marvin Middlemark

Marvin P. Middlemark (September 16, 1919 – September 14, 1989) invented the Rabbit Ears television antenna (dipole antenna) in 1953 in Rego Park, Queens, New York.

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Maspalomas Station

Maspalomas Station is an INTA-operated, ESTRACK radio antenna station for communication with spacecraft located at the southern area of Gran Canaria island, on the INTA campus.

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Mast (sailing)

The mast of a sailing vessel is a tall spar, or arrangement of spars, erected more or less vertically on the centre-line of a ship or boat.

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Mast radiator

A mast radiator (or radiating tower) is a radio mast or tower in which the entire structure functions as an antenna.

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Mathematics of radio engineering

The mathematics of radio engineering is the application of electromagnetic theory to radio-frequency engineering, using conceptual tools such as vector calculus and complex analysis.

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Maunsell Forts

The Maunsell Forts are armed towers built in the Thames and Mersey estuaries during the Second World War to help defend the United Kingdom.

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Maximum power transfer theorem

In electrical engineering, the maximum power transfer theorem states that, to obtain maximum external power from a source with a finite internal resistance, the resistance of the load must equal the resistance of the source as viewed from its output terminals.

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Mühlacker radio transmitter

The Mühlacker Broadcasting Transmission Facility is a radio transmission facility near Mühlacker, Germany, first put into service on November 21, 1930.

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MEASAT Satellite Systems

MEASAT Satellite Systems Sdn.

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Measuring instrument

A measuring instrument is a device for measuring a physical quantity.

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Mech radar

N001 Mech (Меч, literally Sword) is a Russian (former USSR) all-weather multimode airborne radar developed by the Tikhomirov Scientific Research Institute of Instrument Design (NIIP) for the Su-27 multi-role combat aircraft.

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Mechanical floor

A mechanical floor, mechanical penthouse, or mechanical level is a story of a high-rise building that is dedicated to mechanical and electronics equipment.

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Media of Transnistria

The media in Transnistria, the breakaway territory within the borders of Moldova, features both state-owned or supported outlets and opposition media.

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Medical imaging

Medical imaging is the technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology).

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Medicina

Medicina (Bolognese: Midgénna; Eastern Bolognese: Migìna) is an Italian comune with c. 16,000 inhabitants in the Metropolitan City of Bologna, part of the region of Emilia-Romagna.

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Medicina Radio Observatory

The Medicina Radio Observatory is an astronomical observatory located 30 km from Bologna, Italy.

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Melbourne Central Shopping Centre

Melbourne Central is a large shopping centre, office, and public transport hub in the city of Melbourne, Victoria, Australia.

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Mendip transmitting station

The Mendip transmitting station is a broadcasting and telecommunications facility, situated on the summit of Pen Hill, part of the Mendip Hills range in Somerset, England, at above sea level.

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Merchandise Mart

The Merchandise Mart (or the Merch Mart, or the Mart) is a commercial building located in the downtown Chicago, Illinois.

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Merkur Tower

The Merkur Tower (Merkur) is an observation tower on the Merkur near Baden-Baden, at 8°16'50" E and 48°45'52" N. The tower has been in use since 8 April 1950 by the former SWF (now SWR) as a transmission tower for FM-radio and, since 1953, television.

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Metamaterial

A metamaterial (from the Greek word μετά meta, meaning "beyond") is a material engineered to have a property that is not found in nature.

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Metamaterial antenna

Metamaterial antennas are a class of antennas which use metamaterials to increase performance of miniaturized (electrically small) antenna systems.

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Metamaterial cloaking

Metamaterial cloaking is the usage of metamaterials in an invisibility cloak.

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Metamaterials: Physics and Engineering Explorations

Metamaterials: Physics and Engineering Explorations is a book length introduction to the fundamental research and advancements in electromagnetic composite substances known as electromagnetic metamaterials.

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Microstrip antenna

In telecommunication, a microstrip antenna (also known as a printed antenna) usually means an antenna fabricated using microstrip techniques on a printed circuit board (PCB).

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Microwave

Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.

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Microwave antenna

A microwave antenna is a physical transmission device used to broadcast microwave transmissions between two or more locations.

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Microwave engineering

Microwave engineering pertains to the study and design of microwave circuits, components, and systems.

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Microwave imaging

Microwave imaging is a science which has been evolved from older detecting/locating techniques (e.g., radar) in order to evaluate hidden or embedded objects in a structure (or media)using electromagnetic (EM) waves in microwave regime (i.e., ~300 MHz-300 GHz).

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Microwave oven

A microwave oven (also commonly referred to as a microwave) is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range.

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Microwave transmission

Microwave transmission is the transmission of information or energy by microwave radio waves.

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Midhurst transmitting station

The Midhurst transmitting station is a facility for both analogue and digital VHF/FM radio and UHF television transmission, northeast of Midhurst, West Sussex, England.

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Minority Report (TV series)

Minority Report is an American science-fiction crime drama television series that aired on Fox from September 21, to November 30, 2015.

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Mir

Mir (Мир,; lit. peace or world) was a space station that operated in low Earth orbit from 1986 to 2001, operated by the Soviet Union and later by Russia.

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Mirage of astronomical objects

A mirage of an astronomical object is a naturally occurring optical phenomenon, in which light rays are bent to produce distorted or multiple images of an astronomical object.

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MIT Radiation Laboratory

The Radiation Laboratory, commonly called the Rad Lab, was a microwave and radar research laboratory located at the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts (US).

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Mitsubishi Eclipse

The Mitsubishi Eclipse is a sport compact car that was produced by Mitsubishi in four generations between 1989 and 2011.

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MiWi

MiWi and MiWi P2P are proprietary wireless protocols designed by Microchip Technology that use small, low-power digital radios based on the IEEE 802.15.4 standard for wireless personal area networks (WPANs).

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Mobile phone signal

A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink).

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Mobile telephony in Africa

Mobile telephony is well spread in Africa just like in the Western World; while in Europe and North America there is a trend towards an average of two cell phones (or two SIM cards) per person.

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Modular smartphone

A modular smartphone is a smartphone made using different components that can be independently upgraded or replaced in a modular design.

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Mohamed Sanad

Mohamed Sanad (محمد سند) is an Egyptian antenna scientist and professor in the Faculty of Engineering, Cairo University.

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Momentum (electromagnetic simulator)

Momentum is 3-D planar EM simulation software for electronics and antenna analysis, a partial differential equation solver of Maxwell's equations based on the method of moments.

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Monopole antenna

A monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane.

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Mont Caro

Mont Caro or Caro is the highest mountain of the Ports de Tortosa-Beseit, Catalonia, Spain.

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Moog synthesizer

Moog synthesizer (pronounced; often anglicized to, though Robert Moog preferred the former) may refer to any number of analog synthesizers designed by Robert Moog or manufactured by Moog Music, and is commonly used as a generic term for older-generation analog music synthesizers.

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Morse code abbreviations

Morse code abbreviations are used to speed up Morse communications by foreshortening textual words and phrases.

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Motala longwave transmitter

The Motala longwave transmitter is a broadcasting station for longwave, established in 1927 in Motala, Sweden.

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Motorola Canopy

Motorola Canopy is a fixed wireless networking system designed for wireless Internet service providers to provide Internet access.

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Motorola Defy

The Motorola Defy, also known as Motorola Defy A8210 & MB525, is an Android-based smartphone from Motorola.

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Motorola E770

The Motorola E770 mobile phone (also known as the E770v denoting a Vodafone network specific variant of this handset) is a 3G phone that operates primarily on the third generation phone network; however, it can be downscable to GPRS 2.5 and below if required.

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Motorola International 3200

The Motorola International 3200 was the first digital hand-held mobile telephone introduced in 1992, along with the more compact 5200, 7200 and 7500 "flip phones" introduced in 1994.

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Mount Agou

Mount Agou (earlier known as Mount Baumann) is the highest mountain in Togo at 986 metres (3234 ft.). Near the Ghana border, it lies to the south east of Kpalimé in the Plateaux Region of Togo.

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Mount Fuji Radar System

The Mount Fuji Radar System is a historic weather radar system located on the summit of Mount Fuji, Japan.

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Mount Washington (New Hampshire)

Mount Washington, called Agiocochook by some Native American tribes, is the highest peak in the Northeastern United States at and the most prominent mountain east of the Mississippi River.

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Mountain Cablevision

Mountain Cable was one of three cable television service providers for the city of Hamilton, Ontario and its surrounding area, specifically the Hamilton Mountain area and Haldimand County.

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Movitel, SA

Movitel is a mobile Telecommunication operator based in Mozambique, in Maputo.

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MPH (ATSC)

MPH (Mobile-Pedestrian-Handheld) inband mobile digital television is a technology jointly developed by Harris Corporation, LG Electronics, Inc.

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Mr. Bean Goes to Town

"Mr.

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Multichannel Multipoint Distribution Service

Multichannel Multipoint Distribution Service (MMDS), formerly known as Broadband Radio Service (BRS) and also known as Wireless Cable, is a wireless telecommunications technology, used for general-purpose broadband networking or, more commonly, as an alternative method of cable television programming reception.

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Multilateration

Multilateration (MLAT) is a surveillance technique based on the measurement of the difference in distance to two stations at known locations by broadcast signals at known times.

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Multipath propagation

In wireless telecommunications, multipath is the propagation phenomenon that results in radio signals reaching the receiving antenna by two or more paths.

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Murchison Radio-astronomy Observatory

The Murchison Radio-Astronomy Observatory (MRO) is a designated radio quiet zone located near Boolardy station in Western Australia.

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Murchison Widefield Array

The Murchison Widefield Array (MWA) is a joint project between an international consortia of organisations to construct and operate a low-frequency radio array.

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MV Joyita

MV Joyita was a merchant vessel from which 25 passengers and crew mysteriously disappeared in the South Pacific in 1955.

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My Monster Secret

My Monster Secret, known in Japan as, is a Japanese manga series written and illustrated by Eiji Masuda.

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MythBusters (2003 season)

The cast of the television series MythBusters perform experiments to verify or debunk urban legends, old wives' tales, and the like.

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N-class blimp

The N-Class, or as popularly known, the Nan ship, was a line of non-rigid airships built by the Goodyear Aircraft Company of Akron, Ohio for the US Navy.

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Nader Engheta

Nader Engheta (نادر انقطاع) (born 1955 in Tehran) is an Iranian-American scientist.

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Nançay radio telescope

The Nançay decimetric radio telescope (Le radiotélescope décimétrique de Nançay (NRT)) is located in the small commune of Nançay, two hours' drive south of Paris, France.

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Nanophotonics

Nanophotonics or nano-optics is the study of the behavior of light on the nanometer scale, and of the interaction of nanometer-scale objects with light.

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National Centre for Radio Astrophysics

The National Centre for Radio Astrophysics (NCRA) (Hindi:राष्ट्रीय रेडियो खगोल भौतिकी केन्द्र) of India is a premier research institution in India in the field of radio astronomy is located in the Pune University Campus (just beside IUCAA), is part of the Tata Institute of Fundamental Research, Mumbai, India.

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National Telecommunication Corporation (Pakistan)

National Telecommunication Corporation (abbreviated: NTC) is a government owned information technology and Telecommunication services provider corporation in Pakistan.

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Naval Radio Transmitter Facility (NRTF) Niscemi

Naval Radio Transmitter Facility Niscemi (NRTF Niscemi) is a transmission facility of the United States Navy at Niscemi, Sicily, maintained by the N92 Division of Naval Computer and Telecommunications Station Sicily.

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Naval Station Ernesto Ogbinar

Naval Station Ernesto Ogbinar, previously Naval Station Poro Point, is an installation of the Philippine Navy, located at Poro Point, in San Fernando, La Union, Luzon, The Philippines.

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Naval Station Sangley Point

Naval Station Sangley Point was a communication and hospital facility of the United States Navy which occupied the northern portion of the Cavite City peninsula and is surrounded by Manila Bay, approximately eight miles southwest of Manila, the Philippines.

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Navigation

Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.

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Navini Networks

Navini Networks was a company that developed an Internet access system based on WiMAX wireless communication standards.

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Near and far field

The near field and far field are regions of the electromagnetic field (EM) around an object, such as a transmitting antenna, or the result of radiation scattering off an object.

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Near-field electromagnetic ranging

Near-field electromagnetic ranging (NFER) refers to any radio technology employing the near-field properties of radio waves as a Real Time Location System (RTLS).

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Negative resistance

In electronics, negative resistance (NR) is a property of some electrical circuits and devices in which an increase in voltage across the device's terminals results in a decrease in electric current through it.

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Netgear Digital Entertainer

Netgear's Digital Entertainer line of products are digital media players that can pull multimedia content from home computers to the typical audio/video entertainment center.

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Neurostimulation

Neurostimulation is the purposeful modulation of the nervous system's activity using invasive (e.g. microelectrodes) or non-invasive means (e.g. transcranial magnetic stimulation or transcranial electric stimulation, tES, such as tDCS or transcranial alternating current stimulation, tACS).

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New River Gorge Bridge

The New River Gorge Bridge is a steel arch bridge long over the New River Gorge near Fayetteville, West Virginia, in the Appalachian Mountains of the eastern United States.

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Newnham, Northamptonshire

Newnham is a village in the Daventry district of the county of Northamptonshire in England.

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Nick Berg

Nicholas Evan Berg (April 2, 1978 – May 7, 2004) was an American freelance radio-tower repairman who went to Iraq after the United States' invasion of Iraq.

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Nikola Tesla electric car hoax

The Nikola Tesla electric car hoax is an anecdote that refers to a supposed Nikola Tesla invention described by Peter Savo, who claimed to be a nephew of Tesla, to Derek Ahers in 1967.

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Nimbus 1

Nimbus 1 (also called Nimbus-A) was an meteorological satellite.

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Nimbus 2

Nimbus 2 (also called Nimbus-C) was a meteorological satellite.

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Nimbus 3

Nimbus 3 (also called Nimbus-B2) was a meteorological satellite.

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Nimbus 4

Nimbus 4 (also called Nimbus D) was a meteorological satellite.

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Nimbus 7

Nimbus 7 (also called Nimbus G) was an meteorological satellite.

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Nippon Light Metal

is a Japanese multinational public industrial holding company that through its subsidiaries is mainly engaged in the manufacture and sale of aluminum and chemical products.

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No. 101 Squadron RAF

No.

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No. 123 Signals Unit RAF

123 Signals Unit was a Ground Controlled Interception Radar Unit of the Royal Air Force formed on 1 July 1954 at RAF Habbaniya, Iraq.

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Node (physics)

A node is a point along a standing wave where the wave has minimum amplitude.

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Noise (electronics)

In electronics, noise is an unwanted disturbance in an electrical signal.

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Noise (radio)

In radio reception, noise is the superposition of white noise and other disturbing influences on the signal, caused either by thermal noise and other electronic noise from receiver input circuits or by interference from radiated electromagnetic noise picked up by the receiver's antenna.

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Noise (video)

Noise, in analog video and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna receiver of television sets and other display devices.

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Noise power

In telecommunication, the term noise power has the following meanings.

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Nokia 9210 Communicator

The Nokia 9210 Communicator is a third-generation Communicator series smartphone produced by Nokia, introduced 21 November 2000.

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Nominal impedance

Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device.

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Non-directional beacon

A non-directional (radio) beacon (NDB) is a radio transmitter at a known location, used as an aviation or marine navigational aid.

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Non-line-of-sight propagation

Non-line-of-sight (NLOS) and near-line-of-sight are radio transmissions across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone.

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Norsat

Norsat International Inc. is a satellite communications company based in Richmond, British Columbia, Canada.

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Northrop Grumman E-2 Hawkeye

The Northrop Grumman E-2 Hawkeye is an American all-weather, carrier-capable tactical airborne early warning (AEW) aircraft. This twin-turboprop aircraft was designed and developed during the late 1950s and early 1960s by the Grumman Aircraft Company for the United States Navy as a replacement for the earlier, piston-engined E-1 Tracer, which was rapidly becoming obsolete. The aircraft's performance has been upgraded with the E-2B, and E-2C versions, where most of the changes were made to the radar and radio communications due to advances in electronic integrated circuits and other electronics. The fourth major version of the Hawkeye is the E-2D, which first flew in 2007. The E-2 was the first aircraft designed specifically for its role, as opposed to a modification of an existing airframe, such as the Boeing E-3 Sentry. Variants of the Hawkeye have been in continuous production since 1960, giving it the longest production run of any carrier-based aircraft. The E-2 also received the nickname "Super Fudd" because it replaced the E-1 Tracer "Willy Fudd". In recent decades, the E-2 has been commonly referred to as the "Hummer" because of the distinctive sounds of its turboprop engines, quite unlike that of turbojet and turbofan jet engines. In addition to U.S. Navy service, smaller numbers of E-2s have been sold to the armed forces of Egypt, France, Israel, Japan, Mexico, Singapore and Taiwan.

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Noto Radio Observatory

The Noto VLBI Station is a radio observatory located on Sicily, southern Italy, outside the city of Noto.

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November 1992 tornado outbreak

The November 1992 tornado outbreak was a three-day tornado outbreak that struck large parts of the Eastern United States and the Midwestern United States on November 21–23.

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NTP, Inc.

NTP, Inc. is a Virginia-based patent holding company founded in 1992 by the late inventor Thomas J. Campana Jr. and Donald E. Stout.

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NTSC

NTSC, named after the National Television System Committee,National Television System Committee (1951–1953),, 17 v. illus., diagrs., tables.

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Nuclear blackout

Nuclear blackout, also known as fireball blackout or radar blackout, is an effect caused by explosions of nuclear weapons that disturbs radio communications and causes radar systems to be blacked out or heavily refracted so they can no longer be used for accurate tracking and guidance.

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Null (physics)

In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other.

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Null (radio)

In radio electronics, a null is an area or vector in an antenna's radiation pattern where the signal cancels out almost entirely.

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Null fill

Null fill is used in radio antenna systems which are located on mountains or tall towers, to prevent too much of the signal from overshooting the nearest part of intended coverage area.

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Numerical Electromagnetics Code

The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling system for wire and surface antennas.

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Observation Tower Ahlbeck

The Observation Tower Ahlbeck is a 50 metres tall observation tower with tree observation decks at Ahlbeck on the island Usedom in Germany.

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Occupations in electrical/electronics engineering

The field of electrical and electronics engineering has grown to include many related disciplines and occupations.

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Off-air pickup

An off-air pickup was a method used by some small market television stations in the United States to receive and relay network programming.

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Oiz

Mount Oiz (1026.40 m.), is one of the most popular summits of Biscay in the Basque Country (Spain).

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Okanagan Falls

Okanagan Falls (also known as OK Falls) is a community located on the south end of Skaha Lake in British Columbia.

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Okumura model

The Okumura model is a Radio propagation model that was built using the data collected in the city of Tokyo, Japan.

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OLPC XS

The OLPC XS (often spoken as "School Server") is a Linux-based OS (a Fedora-based distribution) designed to be installed on generic low-to-midrange mildly ruggedized servers.

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Omnidirectional antenna

In radio communication, an omnidirectional antenna is a class of antenna which have an axis about which radio wave power is radiated symmetrically, and, upon that axis, is zero.

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One Shell Plaza

One Shell Plaza (OSP) is a 50-story, skyscraper at 910 Louisiana Street in Downtown Houston, Texas.

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OneWeb satellite constellation

The OneWeb satellite constellation—formerly known as WorldVu—is a proposed satellite internet constellation of approximately 882 satellites expected to provide global Internet broadband service to individual consumers as early as 2019.

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Operation Bulldog III

Operation Bulldog III was a military exercise held in 1955 by the Canadian Army at Yellowknife, Northwest Territories, Canada.

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Operation Goodwood (naval)

Operation Goodwood was a series of British carrier air raids conducted against the German battleship ''Tirpitz'' at her anchorage in Kaafjord, Norway, during late August 1944.

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Operation Tracer

Operation Tracer was a highly classified World War II military operation based in Gibraltar, a British colony and military base.

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Optical heterodyne detection

Optical heterodyne detection is a method of extracting information encoded as modulation of the phase and/or frequency (wavelength) of electromagnetic radiation in the wavelength band of visible or infrared light.

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Optical rectenna

An optical rectenna is a rectenna (rectifying antenna) that works with visible or infrared light.

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Orange Harvest

Orange Harvest was an ESM receiver fitted to marine patrol Avro Shackletons during the Cold War.

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Orbita (TV system)

Orbita (орбита) is a Soviet-Russian system of broadcasting and delivering TV signals via satellites.

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Oriental Pearl Tower

The Oriental Pearl Radio & Television Tower (official name: 东方明珠广播电视塔) is a TV tower in Shanghai.

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Orthomode transducer

An orthomode transducer (OMT) is a waveguide component.

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Ostankino Tower

Ostankino Tower (Останкинская телебашня, Ostankinskaya telebashnya) is a television and radio tower in Moscow, Russia, owned by the Moscow branch of unitary enterprise Russian TV and Radio Broadcasting Network.

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Outline of radio

The following outline is provided as an overview of and topical guide to radio: Radio – transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light.

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Outline of radio science

One way of outlining the subject of radio science is listing the topics associated with it by authoritative bodies.

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Outline of television broadcasting

The following outline is provided as an overview of and topical guide to television broadcasting: Television broadcasting: form of broadcasting in which a television signal is transmitted by radio waves from a terrestrial (Earth based) transmitter of a television station to TV receivers having an antenna.

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Output power of an analog TV transmitter

Article needs redesign.

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Over-the-air

"Over-the-air" is a synonym for "wireless" Over-the-air can also refer to.

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P-10 radar

No description.

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P-12 radar

The P-12 "Yenisei" (also referred to by the NATO reporting name "Spoon Rest" in the west) was an early VHF 3D radar developed and operated by the former Soviet Union.

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P-14 radar

The P-14 (also referred to by the NATO reporting name "Tall King") is a 2D VHF radar that was developed and operated by the Soviet Union.

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P-15 radar

The P-15 "Tropa" ("Тропа"; "trail") or 1RL13 (also referred to by the NATO reporting name "Flat Face A" in the west) is a 2D UHF radar developed and operated by the former Soviet Union.

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P-18 radar

The P-18 or 1RL131 Terek (also referred to by the NATO reporting name "Spoon Rest D" in the west) is a 2D VHF radar developed and operated by the former Soviet Union.

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P-19 radar

The P-19 "Danube" ("Дунай") 1RL134 (also referred to by the NATO reporting name "Flat Face B" in the west) is a 2D UHF radar developed and operated by the former Soviet Union.

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P-3 radar

The "Pegmantit 3" or P-3 (also referred to by the NATO reporting name "Dumbo" in the west) was an early VHF radar developed and operated by the former Soviet Union.

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P-30 radar

The P-30 "Khrustal" ("Хрусталь"; crystal) also referred to by the NATO reporting name "Big Mesh" in the west is a 2D E band/F band radar developed and operated by the former Soviet Union.

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P-35 radar

The P-35 ("Сатурн"; Saturn) also referred to by the NATO reporting name "Bar Lock" in the west is a 2D E band/F band radar developed and operated by the former Soviet Union.

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P-8 radar

No description.

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P-Com

P-Com Corporation was a manufacturer of point-to-point and point-to-multipoint radios in the late 1990s and early 2000s.

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Packet radio

Packet radio is a form of packet switching technology used to transmit digital data via wireless communications.

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Palatine Transmitter

The Palatine Transmitter (German: Pfalzsender) was the first broadcasting station in Kaiserslautern, Rhineland-Palatinate, Germany.

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Panorama Antennas

Panorama Antennas Ltd is a British based company that designs and manufactures communications antennas and closely related diplexer products.

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Parabolic antenna

A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves.

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Paraboloid

In geometry, a paraboloid is a quadric surface that has (exactly) one axis of symmetry and no center of symmetry.

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Parani

Parani is an industrial Bluetooth product line from Sena Technologies Inc.

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Paris Observatory

The Paris Observatory (Observatoire de Paris or Observatoire de Paris-Meudon), a research institution of PSL Research University, is the foremost astronomical observatory of France, and one of the largest astronomical centres in the world.

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Passive radar

Passive radar systems (also referred to as passive coherent location and passive covert radar) encompass a class of radar systems that detect and track objects by processing reflections from non-cooperative sources of illumination in the environment, such as commercial broadcast and communications signals.

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Passive radiator

In a radio antenna, a passive radiator or parasitic element is a conductive element, typically a metal rod, which is not electrically connected to anything else.

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Patch antenna

A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface.

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Patscherkofel Transmitter

The Patscherkofel Transmitter is a facility for FM and TV on the mountain Patscherkofel near Innsbruck, Tyrol, Austria.

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Paulista Avenue

Paulista Avenue (Avenida Paulista in Portuguese, Paulista being the gentilic for those born in São Paulo state) is one of the most important avenues in São Paulo, Brazil.

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Peak envelope power

Peak envelope power (PEP) is the highest envelope power supplied to the antenna transmission line by a transmitter during any full undistorted RF cycle or series of complete radio frequency cycles.

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Pelican Butte

Pelican Butte is a steep-sided dormant shield volcano in the Cascade Range of southern Oregon.

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Pentagrid converter

The pentagrid converter is a type of radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver.

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Periscope antenna

In telecommunication, a periscope antenna is an antenna configuration in which the transmitting antenna is oriented to produce a vertical radiation pattern, and a flat or off-axis parabolic reflector, mounted above the transmitting antenna, is used to direct the beam in a horizontal path toward the receiving antenna.

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Personal luxury car

A personal luxury car is an American car classification describing a highly styled, mass produced, luxury vehicle with an emphasis on image over practicality.

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Personal RF safety monitors

Electromagnetic field densitometers measure the exposure to electromagnetic radiation in certain ranges of the electromagnetic spectrum.

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Peter P. Silvester

Peter Peet Silvester (January 25, 1935 – October 11, 1996) was an electrical engineer who contributed to understanding of numerical analysis of electromagnetic fields and authored a standard textbook on the subject.

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Phase center

In antenna design theory, the phase center is the point from which the electromagnetic radiation spreads spherically outward, with the phase of the signal being equal at any point on the sphere.

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Phase shift module

A phase shift module is a microwave network module which provides a controllable phase shift of the RF signal.

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Phased array

In antenna theory, a phased array usually means an electronically scanned array; a computer-controlled array of antennas which creates a beam of radio waves which can be electronically steered to point in different directions, without moving the antennas.

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Physical plant

Physical plant, mechanical plant or industrial plant (and where context is given, often just plant) refers to the necessary infrastructure used in operation and maintenance of a given facility.

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Pie Town, New Mexico

Pie Town is an unincorporated community and census-designated place located along U.S. Highway 60 in Catron County, New Mexico, United States.

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Pigeon racing

Pigeon racing is the sport of releasing specially trained racing pigeons, which then return to their homes over a carefully measured distance.

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Piloting (navigation)

Piloting (on water) or pilotage (in the air also British English) or land navigation is navigating, using fixed points of reference on the sea or on land, usually with reference to a nautical chart, aeronautical chart or topographic map, to obtain a fix of the position of the vessel, aircraft or land traveler with respect to a desired course or location.

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Pioneer 6, 7, 8, and 9

Pioneer 6, 7, 8, and 9 were space probes in the Pioneer program.

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Pioneer plaque

The Pioneer plaques are a pair of gold-anodized aluminium plaques which were placed on board the 1972 Pioneer 10 and 1973 Pioneer 11 spacecraft, featuring a pictorial message, in case either Pioneer 10 or 11 is intercepted by extraterrestrial life.

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Pioneer Venus Orbiter

The Pioneer Venus Orbiter, also known as Pioneer Venus 1 or Pioneer 12, was a mission to Venus conducted by the United States as part of the Pioneer Venus project.

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Pirate radio in North America

The strict definition of a pirate radio station is a station that operates from sovereign territory without a broadcasting license, or just beyond the territorial waters of a sovereign nation from on board a ship or other marine structure with the intention of broadcasting to that nation without obtaining a broadcasting license from that nation (such as Radio Caroline before its present incarnation).

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Plan position indicator

The plan position indicator (PPI), is the most common type of radar display.

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Planar array

In telecommunications and radar, a planar array is an antenna in which all of the elements, both active and parasitic, are in one plane.

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Planar array radar

The planar array radar is a type of radar that uses a high-gain planar array antenna.

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Planar transmission line

Planar transmission lines are transmission lines with conductors, or in some cases dielectric strips, that are flat, ribbon-shaped lines.

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Plane wave

In the physics of wave propagation, a plane wave (also spelled planewave) is a wave whose wavefronts (surfaces of constant phase) are infinite parallel planes.

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Planes (film)

Planes is a 2013 American 3D computer-animated sports comedy film produced by DisneyToon Studios and released by Walt Disney Pictures.

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Planning permission

Planning permission or developmental approval refers to the approval needed for construction or expansion (including significant renovation) in some jurisdictions.

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Plasma antenna

A plasma antenna is a type of radio antenna currently in development in which plasma is used instead of the metal elements of a traditional antenna.

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Plenty River Trail

The Plenty River Trail is a shared use path for cyclists and pedestrians, which follows the Plenty River through the suburbs of Greensborough and Lower Plenty in Melbourne, Victoria, Australia.

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Plot (graphics)

A plot is a graphical technique for representing a data set, usually as a graph showing the relationship between two or more variables.

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Point source

A point source is a single identifiable localised source of something.

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Polar coordinate system

In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a reference point and an angle from a reference direction.

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Polarization

Polarization or polarisation may refer to.

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Polarization (waves)

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.

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Polarization-division multiple access

Polarization-division multiple access (PDMA) is a channel access method used in some cellular networks.

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Pontop Pike transmitting station

The Pontop Pike transmitting station is a facility for telecommunications and broadcasting situated on a 312-metre (1,024-ft) high hill of the same name between Stanley and Consett, County Durham, near the village of Dipton, England.

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Pop-up satellite archival tag

Pop-up satellite archival tags (PSATs) that use the Argos system which is managed by CLS in Toulouse, France or CLS America in Lanham, Maryland (US) are used to track movements of (usually large, migratory) marine animals.

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Porcelain

Porcelain is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between.

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Porthcurno

Porthcurno (Porthkornow, meaning "Port (or Bay) of Cornwall") is a small village covering a small valley and beach on the south coast of Cornwall, England in the United Kingdom.

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Potential applications of carbon nanotubes

Carbon nanotubes (CNTs) are cylinders of one or more layers of graphene (lattice).

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Powerwave Technologies

Powerwave Technologies, Inc.

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Preamplifier

A preamplifier (preamp or "pre") is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.

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Preselector

A preselector is a name for an electronic device that connects between a radio antenna and a radio receiver.

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Pro Electron

Pro Electron or EECA is the European type designation and registration system for active components (such as semiconductors, liquid crystal displays, sensor devices, electronic tubes and cathode ray tubes).

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Product certification

Product certification or product qualification is the process of certifying that a certain product has passed performance tests and quality assurance tests, and meets qualification criteria stipulated in contracts, regulations, or specifications (typically called "certification schemes" in the product certification industry).

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Professional mobile radio

Professional mobile radio (also known as private mobile radio (PMR) in the UK and land mobile radio (LMR) in North America) are field radio communications systems which use portable, mobile, base station, and dispatch console radios.

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Program test authority

In broadcasting, program test authority (PTA) is an authorization to conduct on-air testing of broadcast station facilities authorized to be built under a construction permit.

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Project Kahu

Project Kahu was a major upgrade for the A-4K Skyhawk attack aircraft operated by the Royal New Zealand Air Force (RNZAF) in the mid-1980s.

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Project Loon

Project Loon is a research and development project being developed by X (formerly Google X) with the mission of providing Internet access to rural and remote areas.

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Project Mercury

Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963.

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Project Sanguine

Project Sanguine was a U.S. Navy project, proposed in 1968 for communication with submerged submarines using extremely low frequency (ELF) radio waves.

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Proximity fuze

A proximity fuze is a fuze that detonates an explosive device automatically when the distance to the target becomes smaller than a predetermined value.

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Prudential, Warsaw

Prudential is a notable skyscraper in Warsaw, Poland.

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Pseudoelasticity

Pseudoelasticity, sometimes called superelasticity, is an elastic (reversible) response to an applied stress, caused by a phase transformation between the austenitic and martensitic phases of a crystal.

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Puigsou

Puigsou is a mountain in Catalonia, Spain.

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Pukara of La Compañía

Pukara de La Compañia is an archaeological site containing the remains of a promaucae fortress, later used by the Incas, located on the large hill overlooking the village of La Compañia, a village in the commune of Graneros, Chile.

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Pulse-Doppler signal processing

Pulse-Doppler signal processing is a radar and CEUS performance enhancement strategy that allows small high-speed objects to be detected in close proximity to large slow moving objects.

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Pulsed radiofrequency

Pulsed radiofrequency is the technique whereby radio frequency (RF) oscillations are gated at a rate of pulses per second (cycles per second, defined as a hertz (Hz)).

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Pumpkin bomb

Pumpkin bombs were conventional aerial bombs developed by the Manhattan Project and used by the United States Army Air Forces against Japan during World War II.

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QMA and QN connector

QMA and QN connectors are quick-connect RF connectors that were designed to replace the widely used SMA (used in low power transmissions; DC–18 GHz) and Type N (used in medium power transmissions; DC–11 GHz) connectors.

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QRP operation

In amateur radio, QRP operation refers to transmitting at reduced power while attempting to maximize one's effective range.

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Quad antenna

A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands.

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Quantum Quest: A Cassini Space Odyssey

Quantum Quest: A Cassini Space Odyssey (originally titled as 2004: A Light Knight's Odyssey) is a 2010 animated educational sci-fi adventure film, written by Harry 'Doc' Kloor and directed by Kloor and Dan St. Pierre, as a science fiction film that takes the viewer on an atomic adventure in space.

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Quezon, Isabela

, officially the, is a settlement_text in the province of,. According to the, it has a population of people.

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Radar

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.

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Radar engineering details

Radar engineering details are technical details pertaining to the components of a radar and their ability to detect the return energy from moving scatterers — determining an object's position or obstruction in the environment.

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Radar in World War II

Radar in World War II greatly influenced many important aspects of the conflict.

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Radar Station, Charlie's Hill

Charlie's Hill Radar Station is a heritage-listed radar station off Charlie's Hill Road, Inkerman, Shire of Burdekin, Queensland, Australia.

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Radial (radio)

In RF engineering, radial has two distinct meanings, both referring to lines which radiate from (or intersect at) a radio antenna, but neither meaning is related to the other.

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Radiant intensity

In radiometry, radiant intensity is the radiant flux emitted, reflected, transmitted or received, per unit solid angle, and spectral intensity is the radiant intensity per unit frequency or wavelength, depending on whether the spectrum is taken as a function of frequency or of wavelength.

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Radiation pattern

In the field of antenna design the term radiation pattern (or antenna pattern or far-field pattern) refers to the directional (angular) dependence of the strength of the radio waves from the antenna or other source.

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Radiation resistance

Radiation resistance is that part of an antenna's feedpoint resistance that is caused by the radiation of electromagnetic waves from the antenna, as opposed to loss resistance (also called ohmic resistance) which generally causes the antenna to heat up.

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Radio

Radio is the technology of using radio waves to carry information, such as sound, by systematically modulating properties of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.

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Radio astronomy

Radio astronomy is a subfield of astronomy that studies celestial objects at radio frequencies.

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Radio broadcasting

Radio broadcasting is transmission by radio waves intended to reach a wide audience.

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Radio channel emulator

Radio channel emulators or radio channel simulators (also called fading simulators) are tools for air interface testing in wireless communication.

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Radio City (pirate radio station)

Radio City was a British pirate radio station broadcasting from Shivering Sands Army Fort, one of the abandoned Second World War Maunsell Sea Forts in the Thames Estuary.

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Radio direction finder

A radio direction finder (RDF) is a device for finding the direction, or ''bearing'', to a radio source.

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Radio France Internationale

Radio France Internationale generally referred to by its acronym RFI, is a French public radio service that broadcasts in Paris and all over the world.

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Radio frequency power transmission

Radio frequency power transmission is the transmission of the output power of a transmitter to an antenna.

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Radio Frequency Systems

Radio Frequency Systems (RFS) is a designer and manufacturer of coaxial cable, antenna and tower systems, as well as active and passive RF filters.

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Radio Ice Cherenkov Experiment

Radio Ice Cherenkov Experiment (RICE) is an experiment designed to detect the Cherenkov emission in the radio regime of the electromagnetic spectrum from the interaction of high energy neutrinos (greater than 1 PeV) with the Antarctic ice cap.

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Radio masts and towers

Radio masts and towers are, typically, tall structures designed to support antennas (also known as aerials) for telecommunications and broadcasting, including television.

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Radio modem

Radio modems transfer data wirelessly across a range of up to tens of kilometres.

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Radio Moscow

Radio Moscow (r), also known as Radio Moscow World Service, was the official international broadcasting station of the Union of Soviet Socialist Republics until 1993.

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Radio receiver

In radio communications, a radio receiver (receiver or simply radio) is an electronic device that receives radio waves and converts the information carried by them to a usable form.

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Radio receiver design

Radio receiver design includes the electronic design of different components of a radio receiver which processes the radio frequency signal from an antenna in order to produce usable information such as audio.

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Radio science subsystem

A radio science subsystem (RSS) is a subsystem placed on board a spacecraft for radio science purposes.

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Radio station

A radio station is a set of equipment necessary to carry on communication via radio waves.

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Radio telescope

A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.

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Radio transmitter design

A radio transmitter is an electronic device which, when connected to an antenna, produces an electromagnetic signal such as in radio and television broadcasting, two way communications or radar.

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Radio wave

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

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Radio-frequency engineering

Radio-frequency engineering, or RF engineering, is a subset of electrical engineering involving the application of transmission line, waveguide, antenna and electromagnetic field principles to the design and application of devices that produce or utilize signals within the range of about 20 kHz up to 300 GHz.

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Radio-frequency identification

Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects.

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Radio-frequency induction

Radio-frequency induction or RF induction is the use of a radio frequency magnetic field to transfer energy by means of electromagnetic induction in the near field.

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Radioglaciology

Radioglaciology is the study of glaciers and ice sheets using radar.

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Radome

A radome (which is a portmanteau of radar and dome) is a structural, weatherproof enclosure that protects a radar antenna.

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RAF Chicksands

Royal Air Force Chicksands or more simply RAF Chicksands is a former Royal Air Force station located south east of Bedford, Bedfordshire and north east of Luton, Bedfordshire. It closed in 1997 when responsibility for the camp was taken over by the British Army Intelligence Corps. Near the town of Shefford it is named after Chicksands Priory, a 12th-century Gilbertine monastery located within the perimeter of the camp.

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RAF Defford

Royal Air Force Defford or more simply RAF Defford is a former Royal Air Force station located north west of Defford, Worcestershire, England.

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Rakhesh Singh Kshetrimayum

Rakhesh Singh Kshetrimayum, FIET, FRSS, SMIEEE (born 1978) is an electrical engineer, educator and Professor in the department of Electronics and Electrical Engineering, Indian Institute of Technology Guwahati.

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Ramona passive sensor

Ramona was the second generation Czechoslovak electronic support measures (ESM) system that uses measurements of time difference of arrival (TDOA) of pulses at three or four sites to accurately detect and track airborne emitters by multilateration.

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Random wire antenna

A random wire antenna is a radio antenna consisting of a long wire suspended above the ground, whose length does not bear a relation to the wavelength of the radio waves used, but is typically chosen more for convenience.

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Ranger 2

Ranger 2 was a flight test of the Ranger spacecraft system of the NASA Ranger program designed for future lunar and interplanetary missions.

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Rayleigh distance

Rayleigh distance in optics is the axial distance from a radiating aperture to a point at which the path difference between the axial ray and an edge ray is λ / 4.

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Reacher Satellite Ground Terminal

Reacher is the new mobile X-Band satellite ground terminal (SGT) being bought by the U.K. Ministry Of Defence designed to replace all medium and large legacy SGTs used in the land environment.

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Realtor transmitter

Realtor transmitter is a powerful medium wave transmitter, west of Bassin de Realtor near Cabriès north of Marseille, France.

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Reciprocity (electromagnetism)

In classical electromagnetism, reciprocity refers to a variety of related theorems involving the interchange of time-harmonic electric current densities (sources) and the resulting electromagnetic fields in Maxwell's equations for time-invariant linear media under certain constraints.

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Reconfigurable antenna

A reconfigurable antenna is an antenna capable of modifying dynamically its frequency and radiation properties in a controlled and reversible manner.

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Rectenna

A rectenna is a rectifying antenna—a special type of receiving antenna that is used for converting electromagnetic energy into direct current (DC) electricity.

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Rectifier

A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction.

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Redruth transmitting station

There are three Redruth transmitting stations.

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Redu Station

Redu Station is an ESTRACK radio antenna station for communication with spacecraft.

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Reference antenna

A reference antenna is an antenna with known performance.

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Reference designator

A reference designator unambiguously identifies a component in an electrical schematic or on a printed circuit board.

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Reference distance

In broadcast engineering, the reference distance is the distance which, under normal circumstances and flat terrain, a radio station would reach with a particular level of signal strength.

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Reflecting telescope

A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image.

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Reflective array antenna

In telecommunications and radar, a reflective array antenna is a class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction.

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Reflector (antenna)

An antenna reflector is a device that reflects electromagnetic waves.

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Remote base station

A remote base station is a common name for an amateur radio auxiliary station that is controlled and operated from a remote location.

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Reradiation

In telecommunication, the term reradiation has the following meanings.

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Resistive opto-isolator

Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolatorIn PerkinElmer literature.

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Resolver (electrical)

A resolver is a type of rotary electrical transformer used for measuring degrees of rotation.

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Retrodirectivity

A retrodirective antenna is an antenna that transmits the signal back in the same direction it came from.

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RF front end

In a radio receiver circuit, the RF front end is a generic term for all the circuitry between the antenna up to and including the mixer stage.

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RF microwave CAE CAD

RF microwave CAE CAD is computer-aided design (CAD) using computer technology to aid in the design, modeling, and simulation of an RF or microwave product.

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RF module

An RF module (radio frequency module) is a (usually) small electronic device used to transmit and/or receive radio signals between two devices.

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RF power amplifier

A radio frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency signal into a higher power signal.

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RFID on metal

RFID on metal (abbreviated to ROM) are radio-frequency identification (RFID) tags which perform a specific function when attached to metal objects.

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Rheinsender

The Rheinsender (Rhine transmitter) is a large medium-wave transmission facility near Wolfsheim, southwest of Mainz for the frequency 1017 kHz.

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Rhombic antenna

A rhombic antenna is a broadband directional wire antenna co-invented by Edmond BruceUS Patent No.

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Rialto Towers

Rialto (often The Rialto, or Rialto Towers) is a skyscraper located at 525 Collins Street, in the western side of the central business district of Melbourne, Victoria, Australia.

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Ribbon cable

A ribbon cable (also known as multi-wire planar cable) is a cable with many conducting wires running parallel to each other on the same flat plane.

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Ringaround

In telecommunication, the term ringaround has the following meanings.

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Riometer

A riometer (commonly relative ionospheric opacity meter, although originally: Relative Ionospheric Opacity Meter for Extra-Terrestrial Emissions of Radio noise) is an instrument used to quantify the amount of electromagnetic-wave ionospheric absorption in the atmosphere.

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RIZ (company)

RIZ, also as RIZ-Odašiljači is a Croatian electronics company headquartered in Zagreb.

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Roaming

Roaming is a wireless telecommunication term typically used with mobile devices (like mobile phones).

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Robert E. Collin

Robert E. Collin (24 October 1928 – 29 November 2010) was a Canadian American electrical engineer, university professor and life fellow of the IEEE.

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Robert E. Finnigan

Robert Emmet Finnigan (born May 27, 1927) is an American pioneer in the development of gas chromatography–mass spectrometry equipment (GC/MS).

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Robert Helliwell

Robert A. Helliwell (September 2, 1920 – May 3, 2011) was an electrical engineer and professor at Stanford University.

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Robinsons Equitable Tower

The Robinsons Equitable Tower, formerly known as the Robinsons PCI Bank Tower, is an office skyscraper located in Pasig, Philippines.

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Robinsons Summit Center

Robinsons Summit Center, formerly known as the JG Summit Center, is an office skyscraper located in Makati, Philippines.

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Robita

Robita is a fictional character, a robot who appears in Osamu Tezuka's manga series Phoenix.

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Robot Building

The Robot Building, located in the Sathorn business district of Bangkok, Thailand, houses United Overseas Bank's Bangkok headquarters.

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Robot Odyssey

Robot Odyssey is an adventure game, published by The Learning Company in 1984.

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Rodolfo Neri Vela

Rodolfo Neri Vela (born 19 February 1952) is a Mexican scientist and astronaut who flew aboard a NASA Space Shuttle mission in the year 1985.

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Rohn Industries

ROHN Products, LLC, formerly ROHN Industries, Inc. and UNR Industries, Inc., is a leading manufacturer of telecommunications towers, poles, mounts, and other materials.

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Ronold W. P. King

Ronold Wyeth Percival King (September 19, 1905 – April 10, 2006) was an American applied physicist, known for his contributions to the theory and application of microwave antennas.

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Rose-Hulman Institute of Technology

Rose–Hulman Institute of Technology (abbreviated RHIT), formerly Rose Polytechnic Institute, is a small private college specializing in teaching engineering, mathematics and science.

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Royal Little

Royal Little (March 1, 1896 in Wakefield, Massachusetts – January 10, 1989 in Nassau, Bahamas), was the founder and chair of Textron, and is considered to be the Father of Conglomerates.

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Rundfunk der DDR

Rundfunk der DDR (Radio of the GDR) was the radio broadcasting organisation for the German Democratic Republic (GDR) from 1952 until German reunification, after which it continued until 1991 as Funkhaus Berlin (Broadcasting Center Berlin).

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Ruselectronics

Ruselectronics (Roselectronica), is a Russian state-owned holding company founded in 1997.

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S-75 Dvina

The S-75 (Russian: С-75; NATO reporting name SA-2 Guideline) is a Soviet-designed, high-altitude air defence system, built around a surface-to-air missile with command guidance.

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Sail (submarine)

In naval parlance, the sail (American usage) or fin (European/Commonwealth usage) of a submarine is the tower-like structure found on the dorsal (topside) surface of submarines.

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Salt Lake City

Salt Lake City (often shortened to Salt Lake and abbreviated as SLC) is the capital and the most populous municipality of the U.S. state of Utah.

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Samsung SGH-T729

Released during Q3 2007 for T-Mobile in the USA, the Samsung Blast (SGH-T729) slider features a double-tap QWERTY keypad, music player, stereo bluetooth and a MicroSD slot.

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Samuel Rabinovich

Samuel P. Rabinovich (1909–1988) was an outstanding Soviet engineer, one of the founders of practical radar systems, the chief designer of the first series of radar stations designed in the 1940s, 1950s and 1960s.

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Santa Matilde

The Santa Matilde, or SM4.1, is a sports car designed and produced in Brazil by Companhia Industrial Santa Matilde between 1977 and 1997.

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Saorview

Saorview is the national digital terrestrial television (DTT) service in Ireland.

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Sarantel

Sarantel (officially Sarantel Group PLC) (AIM: SLG) is a Wellingborough, UK-based manufacturer of miniature low-proximity antennas used in cell phones, PDAs, GPS, and other communication devices.

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Satellite bus

A satellite bus or spacecraft bus is a general model on which multiple-production satellite spacecraft are often based.

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Satellite dish

A satellite dish is a dish-shaped type of parabolic antenna designed to receive or transmit information by radio waves to or from a communication satellite.

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Satellite flare

Satellite flare, also known as satellite glint, is the visible phenomenon caused by the reflective surfaces of passing satellites (such as antennas, SAR or solar panels), reflecting sunlight toward the Earth below and appearing as a brief, bright "flare".

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Satellite Home Viewer Act

The Satellite Home Viewer Act of 1988 comprises a set of regulations which govern the transmissions of television stations in the United States, specifically imposing the restriction of satellite carrier transmissions of a network station's transmissions only to subscribers who cannot receive these broadcasts via antenna and have not subscribed to a cable system providing these broadcasts, and which also concern regularizing satellite carriers' submission of lists of subscribers to networks, the coordination of broadcasting fees with territorial coverage of transmissions, and the distribution of fees to copyright owners of works included in transmissions.

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Satellite Internet access

Satellite Internet access is Internet access provided through communications satellites.

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Satellite phone

A satellite telephone, satellite phone, or satphone is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites.

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Satellite television by region

Satellite television varies in the different regions around the world.

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Saturn V Instrument Unit

The Saturn V Instrument Unit is a ring-shaped structure fitted to the top of the Saturn V rocket's third stage (S-IVB) and the Saturn IB's second stage (also an S-IVB).

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Scaled Composites Tier One

Tier One was a Scaled Composites' 1990s–2004 program of suborbital human spaceflight using the reusable spacecraft SpaceShipOne and its launcher White Knight.

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Scanner (radio)

A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.

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Scimitar antenna

A scimitar antenna is a radio antenna so named because its shape resembles a talon-shaped curved sword of the same name.

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Scott E. Parazynski

Scott Edward Parazynski (born July 28, 1961 in Little Rock, Arkansas) is an American physician and a former NASA astronaut.

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SCR-197

The SCR-197 was a ground mobile high frequency radio station used by the United States military prior to and during World War II, notably during the Battle of Wake Island in 1941.

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SCR-203

The SCR-203 was a U.S. Army radio transceiver used during World War II and designed to be mounted on an animal pack saddle.

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SCR-68

The SCR-68 (SCR was a military term meaning Set, Complete, Radio) was a military radiotelephone used by the US Army Signal Corps as an aircraft radio in the waning months of World War I.Stoller, H. M Engineering Dept, Western Electric Company, Inc.

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Sea ice concentration

Sea ice concentration is a useful variable for climate scientists and nautical navigators.

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Sea interferometry

Sea interferometry, also known as Sea-cliff interferometry, is a form of radio astronomy that uses radio waves reflected off the sea to produce an interference pattern.

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Seasat

Seasat was the first Earth-orbiting satellite designed for remote sensing of the Earth's oceans and had on board the first spaceborne synthetic aperture radar (SAR).

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Second Gulf of Sidra offensive

The Second Gulf of Sidra offensive was a military operation in the Libyan Civil War conducted by rebel anti-Gaddafi forces in August and September 2011 to take control of towns along the Gulf of Sidra in an effort to surround Muammar Gaddafi's hometown of Sirte, which was held by pro-Gaddafi forces.

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Sector antenna

A sector antenna is a type of directional microwave antenna with a sector-shaped radiation pattern.

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Selkirk transmitting station

The Selkirk transmitting station is a telecommunications facility located next to Lindean Loch, near Selkirk in the Scottish Borders.

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Sender Inselsberg

The Sender Inselsberg (transmitter Inselsberg) is a FM and television-transmission facility on the Big Inselsberg in Thuringia, Germany.

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Sender Zehlendorf

Sender Zehlendorf is a radio transmission facility which has been in service since 1936, when a short wave transmitter was built in Zehlendorf (a village near Oranienburg) as part of the establishment of permanent radio services.

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Senior Road Tower

The Senior Road Tower is a guyed mast for FM and TV broadcasting, measuring tall, located in unincorporated northeastern Fort Bend County near Missouri City, Texas, United States.

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Sensor node

A sensor node, also known as a mote (chiefly in North America), is a node in a sensor network that is capable of performing some processing, gathering sensory information and communicating with other connected nodes in the network.

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Sensor web

The concept of the "sensor web" is a type of sensor network that is especially well suited for environmental monitoring.

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Sergei Alexander Schelkunoff

Dr.

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Serra de Sant Pere

Serra de Sant Pere (Saint Peter's Range) (Sierra del Solá) or Serra del Solà is a long mountain range in the Baix Maestrat comarca, Valencian Community, Spain.

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Set-top box

A set-top box (STB) or set-top unit (STU) (one type also colloquially known as a cable box) is an information appliance device that generally contains a TV-tuner input and displays output to a television set and an external source of signal, turning the source signal into content in a form that then be displayed on the television screen or other display device.

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Shadow of Fear

"Shadow of Fear" is the 18th episode of the Supermarionation television series Captain Scarlet and the Mysterons.

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SHARAD

SHARAD (Mars SHAllow RADar sounder) is a subsurface sounding radar embarked on the Mars Reconnaissance Orbiter probe.

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Shoemaker (lunar crater)

Shoemaker is a lunar impact crater that is located near the southern pole of the Moon, within half a crater diameter of Shackleton.

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Shoreview, Minnesota

Shoreview is a city in Ramsey County, Minnesota, United States.

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Short backfire antenna

A short backfire antenna (or short back-fire, SBA, SBF or SBFA) is a type of a directional antenna, characterized by high gain, relatively small size, and narrow band.

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Shortwave broadband antenna

A shortwave broadband antenna is a radio antenna, that without adjustment, can be used for transmission (and reception) of a shortwave radio channel chosen from greater part of the shortwave radio spectrum.

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Shortwave broadcasting in the United States

Shortwave broadcasting in the United States allows private ownership of commercial and non-commercial shortwave stations that are not relays of existing AM/MW or FM radio stations, as are common in Africa, Europe, Asia, Oceania except Australia and Latin America.

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Shortwave listening

Shortwave listening, or SWLing, is the hobby of listening to shortwave radio broadcasts located on frequencies between 1700 kHz and 30 MHz.

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Shortwave radio

Shortwave radio is radio transmission using shortwave radio frequencies.

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Shortwave radio receiver

A shortwave radio receiver is a radio receiver that can receive one or more shortwave bands, between 1.6 and 30 MHz.

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Shortwave relay station

Shortwave relay stations are transmitter sites used by international broadcasters to extend their coverage to areas that cannot be reached easily from their home state, for example the BBC operates an extensive net of relay stations.

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Shunt (electrical)

In electronics, a shunt is a device which allows electric current to pass around another point in the circuit by creating a low resistance path.

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Siae Microelettronica

SIAE MICROELETTRONICA is an Italian multinational corporation and a global supplier of telecom network equipments.

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Side lobe

In antenna engineering, side lobes or sidelobes are the lobes (local maxima) of the far field radiation pattern that are not the main lobe.

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Single operator two radios

Single operator two radios (SO2R) is an operating practice employed by some competitors in the sport of amateur radio contesting.

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Single-input single-output system

In control engineering, a single-input and single-output (SISO) system is a simple single variable control system with one input and one output.

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Sitkūnai Radio Station

Sitkūnai Radio Station is a large facility for medium wave and shortwave broadcasting at Sitkūnai, Lithuania.

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Skew (antenna)

Skew is a term used in antenna engineering.

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Slant range

In radio electronics, especially radar terminology, slant range is the line-of-sight distance between two points which are not at the same level relative to a specific datum.

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Slot antenna

A slot antenna consists of a metal surface, usually a flat plate, with one or more holes or slots cut out.

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Slotted line

Slotted lines are used for microwave measurements and consist of a movable probe inserted into a slot in a transmission line.

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Slotted waveguide

# A slotted waveguide is a waveguide that is used as an antenna in microwave radar applications.

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Smart antenna

Smart antennas (also known as adaptive array antennas, digital antenna arrays, multiple antennas and, recently, MIMO) are antenna arrays with smart signal processing algorithms used to identify spatial signal signatures such as the direction of arrival (DOA) of the signal, and use them to calculate beamforming vectors which are used to track and locate the antenna beam on the mobile/target.

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Smart key

A smart key is an electronic access and authorization system that is available either as standard equipment or as an option in several car models.

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Smart label

Smart Label, also called Smart Tag, is an extremely flat configured transponder under a conventional print-coded label, which includes chip, antenna and bonding wires as a so-called inlay.

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Software-defined radio

Software-defined radio (SDR) is a radio communication system where components that have been traditionally implemented in hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a personal computer or embedded system.

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Solrad 10

Solrad 10, also known Explorer 44, NRL-PL 165 and Explorer SE-C, was one of the SOLRAD series designed to provide continuous coverage of wavelength and intensity changes in solar radiation in the UV, soft and hard X-ray regions.

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Sony Ericsson K750

The Sony Ericsson K750, introduced in June 2005, was a high-end mobile phone, the successor to the now discontinued K700, and which was succeeded by the K800i in Q2 2006.

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Sony Ericsson K770

The Sony Ericsson K770i, was launched by 3 (in the UK) in 2008 in association with girl band Sugababes.

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Sottens transmitter

The Sottens Transmitter is the nationwide transmitter for French-speaking Switzerland.

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Soyuz MS

The Soyuz-MS (GRAU: 11F732A48) is the latest revision of the Soyuz spacecraft.

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Space fountain

A space fountain is a proposed form of structure extending into space that, like a space elevator, can extend to geostationary orbit, but does not rely on tensile strength for support.

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Space science in Estonia

The cornerstone of the Estonian cosmological research is the Tartu Observatory which was founded in 1812.

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Space segment

The space segment of an artificial satellite system is one of its three operational components (the others being the user and ground segments).

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Space tribology

Space tribology is a discipline in the field of tribology which deals with tribological systems for spacecraft applications.

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Space-based radar

Space-based radar refers to space-borne radar systems that may have any of a variety of purposes.

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Space-division multiple access

Space-division multiple access (SDMA) is a channel access method based on creating parallel spatial pipes next to higher capacity pipes through spatial multiplexing and/or diversity, by which it is able to offer superior performance in radio multiple access communication systems.

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Space–time block code

Space–time block coding is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data transfer.

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Space–time code

A space–time code (STC) is a method employed to improve the reliability of data transmission in wireless communication systems using multiple transmit antennas.

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Space–time trellis code

Space–time trellis codes (STTCs) are a type of space–time code used in multiple-antenna wireless communications.

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Spacecraft design

The design of spacecraft covers a broad area, including the design of both robotic spacecraft (satellites and planetary probes), and spacecraft for human spaceflight (spaceships and space stations).

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Span (engineering)

Span is the distance between two intermediate supports for a structure, e.g. a beam or a bridge.

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Spatial multiplexing gain

In radio technology, Spatial Multiplexing Gain (SMG) is achieved when a system is transmitting different streams of data from the same radio resource in separate spatial dimensions.

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Special-use permit

A special use permit authorizes land uses that are allowed and encouraged by the ordinance and declared harmonious with the applicable zoning district.

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Specialized Mobile Radio

Specialized Mobile Radio (SMR) may be an analog or digital trunked two-way radio system, operated by a service in the VHF, 220, UHF, 700, 800 or 900 MHz bands.

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Spectral estimation of multidimensional signals

Power spectral estimation forms the basis for distinguishing and tracking signals in the presence of noise and extracting information from available data.

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Spektr-R

Spektr-R (or RadioAstron) is a Russian scientific satellite with a radio telescope on board.

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Spiral antenna

In microwave systems, a spiral antenna is a type of RF antenna.

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Split sound system

Split sound is an old system in analog television transmitters.

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Spoofing attack

In the context of network security, a spoofing attack is a situation in which a person or program successfully masquerades as another by falsifying data, to gain an illegitimate advantage.

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Sprue (manufacturing)

A sprue is the passage through which liquid material is introduced into a mold.

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Square Kilometre Array

The Square Kilometre Array (SKA) is a large multi radio telescope project aimed to be built in Australia and South Africa.

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Squarial

The Squarial (a portmanteau of the words square and aerial) is a satellite antenna used for reception of the now defunct British Satellite Broadcasting television service.

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SS Georgia

SS Georgia was an oil tanker lost at Haisborough Sands off the coast of Norfolk, England in November 1927.

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SS Irish Willow (1918)

Irish Willow was one of the few ships which maintained Irish trade during World War II.

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St Hilary transmitting station

The St Hilary transmitting station is a facility for telecommunications situated close to the village of St Hilary, Glamorgan in the Vale of Glamorgan, Wales, in the UK.

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Stadelheim Transmitter

Stadelheim Transmitter was a medium wave broadcast transmitter in Munich-Stadelheim, built in 1926 in the neighbourhood of the famous Stadelheim Prison.

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Stairs

A stairway, staircase, stairwell, flight of stairs, or simply stairs is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps.

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Standing wave ratio

In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide.

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Starshel

R-045/R-046 Starshel (Bulgarian: Стършел, Hornet) is a type of electronic countermeasures ammunition, fired by 122 mm or 152 mm artillery guns.

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Starwisp

Starwisp is a hypothetical unmanned interstellar probe design proposed by Robert L. Forward.

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State Administration of Radio and Television

The State Administration of Radio and Television (SART), formerly the State Administration of Radio, Film, and Television (SARFT) and the State Administration of Press, Publication, Radio, Film and Television (SAPPRFT), is a ministry-level executive agency directly under the State Council of the People's Republic of China.

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Stockholm metro

The Stockholm metro (Stockholms tunnelbana, literally: Stockholm's Tunnel Rail) is a metro system in Stockholm, Sweden.

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Storm

A storm is any disturbed state of an environment or in an astronomical body's atmosphere especially affecting its surface, and strongly implying severe weather.

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Strabane transmitting station

The Strabane transmitting station is a broadcasting and telecommunications facility located at Legfordrum and situated very close to the town of Strabane, in County Tyrone, Northern Ireland (Grid Reference: H393947, GNR: IH393947).

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Strain insulator

A strain insulator is an electrical insulator that is designed to work in mechanical tension (strain), to withstand the pull of a suspended electrical wire or cable.

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Strait of Juan de Fuca laser incident

On 4 April 1997, a Canadian Armed Forces helicopter was allegedly illuminated by a laser while observing the Russian merchant ship and suspected spy vessel Kapitan Man, which was in the Strait of Juan de Fuca in U.S. territorial waters near Port Angeles, Washington.

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STS-119

STS-119 (ISS assembly flight 15A) was a space shuttle mission to the International Space Station (ISS) which was flown by Space Shuttle ''Discovery'' during March 2009.

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STS-120

STS-120 was a space shuttle mission to the International Space Station (ISS) that launched on 23 October 2007 from the Kennedy Space Center, Florida.

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STS-128

STS-128 (ISS assembly flight 17A) was a NASA Space Shuttle mission to the International Space Station (ISS) that launched on 28 August 2009.

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STS-88

STS-88 was the first Space Shuttle mission to the International Space Station (ISS).

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Stub (electronics)

In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only.

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Studio/transmitter link

A studio/transmitter link (or STL) sends a radio station's or television station's audio and video from the broadcast studio or origination facility to a radio transmitter, television transmitter or uplink facility in another location.

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Submarine navigation

Submarine navigation underwater requires special skills and technologies not needed by surface ships.

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Sudbury transmitting station

The Sudbury transmitting station is a facility for telecommunications and broadcasting transmission at Sudbury, England.

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SunTrust Plaza

SunTrust Plaza is a 60 story skyscraper in downtown Atlanta.

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Super high frequency

Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz).

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Super low frequency

Super low frequency (SLF) is electromagnetic waves (radio waves) in the frequency range between 30 hertz and 300 hertz.

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Superheterodyne receiver

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency.

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Swayam

Swayam is a 1-U picosatellite (CubeSat) developed by the undergraduate students of College of Engineering, Pune.

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Sweat Mountain

Sweat Mountain is a low mountain in far northeastern Cobb County, Georgia, in the suburbs north of Atlanta.

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Swingate transmitting station

The Swingate transmitting station is a facility for FM-transmission in the village of Swingate, near Dover, Kent.

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SWR meter

The SWR meter or VSWR (voltage standing wave ratio) meter measures the standing wave ratio in a transmission line.

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Synchro

A synchro (also known as Selsyn and by other brand names) is, in effect, a transformer whose primary-to-secondary coupling may be varied by physically changing the relative orientation of the two windings.

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Synchrotron radiation

Synchrotron radiation (also known as magnetobremsstrahlung radiation) is the electromagnetic radiation emitted when charged particles are accelerated radially, i.e., when they are subject to an acceleration perpendicular to their velocity.

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T-antenna

A T-antenna, T-aerial, flat-top antenna, or top-hat antenna is a capacitively loaded monopole wire radio antenna used in the VLF, LF, MF and shortwave bands.

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Tablo (DVR)

Tablo is a digital video recorder (DVR) for Over-The-Air (OTA) broadcast television signals that is controlled by a tablet or web-based application.

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Tacolneston transmitting station

The Tacolneston transmitting station is a facility for both analogue and digital VHF/FM radio and UHF television transmission near Tacolneston, south-west of Norwich, Norfolk, England.

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Tactical Vest Antenna System

Tactical Vest Antenna System (TVAS) is a type of wearable antenna designed for use by the United States Armed Forces.

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Takis

Takis (born Panagiotis Vassilakis; Παναγιώτης (Τάκις) Βασιλάκης; born October 25, 1925, in Athens) is a Greek artist popular in France.

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Tamura, Fukushima

is a city located in Fukushima Prefecture, Japan.

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Targeting tower

Targeting towers use a special device to ensure an antenna's stability when strong wind blows.

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TasWireless

TasWireless is a group of wireless networking enthusiasts in Tasmania, Australia.

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Tavolara Island

Tavolara is a small island off the northeast coast of Sardinia, Italy.

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Technical Research Ship Special COMMunications

TRSSCOMM (Technical Research Ship Section 4. History of USS Oxford, pp 16-28 pertain to the USS Oxford, 10 of 12 pages blank - redacted as classified Top Secret Umbra. Special COMMunications), an early U.S. Navy earth-moon-earth satellite communication system that relayed ("bounced") messages directly from intelligence-gathering ship to Washington DC by bouncing a microwave signal off the moon, used first on the USS Oxford (15 December 1961).

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Technical surveillance counter-measures

TSCM (technical surveillance counter-measures) is the original United States Federal government abbreviation denoting the process of bug-sweeping or electronic countersurveillance.

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Tegel

is a locality (Ortsteil) in the Berlin borough of Reinickendorf on the shore of Lake Tegel.

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Telecommunication

Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.

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Telecommunications cable

Telecommunications cables are a type of guided transmission mediums.

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Telecommunications engineering

Telecommunications engineering is an engineering discipline centered on electrical and computer engineering which seeks to support and enhance telecommunication systems.

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Telemetry

Telemetry is an automated communications process by which measurements and other data are collected at remote or inaccessible points and transmitted to receiving equipment for monitoring.

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Telescope

A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).

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Teletubbies

Teletubbies is a British pre-school children's television series created by Ragdoll Productions' Anne Wood and Andrew Davenport.

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Television antenna

A television antenna, or TV aerial, is an antenna specifically designed for the reception of over-the-air broadcast television signals, which are transmitted at frequencies from about 41 to 250 MHz in the VHF band, and 470 to 960 MHz in the UHF band in different countries.

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Television in Japan

Television in Japan dates back to the 1920s, with Kenjiro Takayanagi's pioneering experiments in electronic television.

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Television licensing in the Republic of Ireland

In Ireland, a television licence is required for any address at which there is a television set.

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Television standards conversion

Television standards conversion is the process of changing one type of television system to another.

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Television station

A television station is a set of equipment managed by a business, organisation or other entity, such as an amateur television (ATV) operator, that transmits video content via radio waves directly from a transmitter on the earth's surface to a receiver on earth.

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Television transmitter

A television transmitter is a device which broadcasts an electromagnetic signal to the television receivers.

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Telluric current

A telluric current (from Latin tellūs, "earth"), or Earth current, is an electric current which moves underground or through the sea.

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Ten rays model

The ten-ray model is a model applied to the transmissions in the urban area, to generate a model of ten rays typically four rays more are added to the six rays model, these are (R3 and R4 bouncing on both sides of the wall); This incorporate paths from one to three reflections: specifically, there is the LOS (Line of sight), GR (ground reflected), SW (single-wall reflected), DW (double-wall reflected), TW (triple-wall reflected), WG (wall-ground reflected) and GW (ground-wall reflected paths).

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Terahertz spectroscopy and technology

Terahertz spectroscopy detects and controls properties of matter with electromagnetic fields that are in the frequency range between a few hundred gigahertz and several terahertz (abbreviated as THz).

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Terminal Tower

Terminal Tower is a 52-story,, landmark skyscraper located on Public Square in downtown Cleveland, Ohio, United States.

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TerraSAR-X

TerraSAR-X, an imaging radar Earth observation satellite, is a joint venture being carried out under a public-private-partnership between the German Aerospace Center (DLR) and EADS Astrium.

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Thales Group

Thales Group is a French multinational company that designs and builds electrical systems and provides services for the aerospace, defence, transportation and security markets.

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The Colony (U.S. season 1)

The Colony is a reality television program.

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The Delicious One

The Delicious One (otherwise known as TDO/T.D.O. for short) or the World's Most Wanted Wiener, which has also been the slogan, is the mascot of Wienerschnitzel.

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The Moth (Lost)

"The Moth" is the seventh episode of the first season of Lost.

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The Open University of Japan

is a distance learning university which has students all over Japan; it accepted its first students in 1985.

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The Oregonian Building

The Oregonian Building was a building in downtown Portland, Oregon, United States, which served as the headquarters of Portland's major newspaper, The Oregonian, from 1892 to 1948.

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The Thing (listening device)

The Thing, also known as the Great Seal bug, was one of the first covert listening devices (or "bugs") to use passive techniques to transmit an audio signal.

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The Tripods

The Tripods is a series of young adult novels written by John Christopher, beginning in 1967.

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The Wrekin transmitting station

The Wrekin transmitting station is a telecommunications and broadcasting facility on The Wrekin, a hill in the county of Shropshire, England.

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Theory

A theory is a contemplative and rational type of abstract or generalizing thinking, or the results of such thinking.

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Theremin

The theremin (--> originally known as the ætherphone/etherphone, thereminophone or termenvox/thereminvox) is an electronic musical instrument controlled without physical contact by the thereminist (performer).

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Thermoacoustic imaging

Thermoacoustic imaging was originally proposed by Theodore Bowen in 1981 as a strategy for studying the absorption properties of human tissue using virtually any kind of electromagnetic radiation.

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Thinned-array curse

The thinned array curse (sometimes, sparse array curse) is a theorem in electromagnetic theory of antennas.

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Through-the-earth mine communications

Through-the-Earth (TTE) signalling is a type of radio signalling used in underground mines and caves that uses low-frequency waves to penetrate dirt and rock, which are opaque to higher-frequency conventional radio signals.

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Time stretch analog-to-digital converter

The time-stretch analog-to-digital converter (TS-ADC), also known as the time stretch enhanced recorder (TiSER), is an analog-to-digital converter (ADC) system that has the capability of digitizing very high bandwidth signals that cannot be captured by conventional electronic ADCs.

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Timeline of Rosetta spacecraft

Rosetta is a space probe designed to rendezvous with the comet 67P/Churyumov–Gerasimenko, perform flybys of two asteroids (2867 Šteins and 21 Lutetia), and carry lander Philae until its landing on 67P.

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Timeline of the Carnation Revolution

Main Movimento das Forças Armadas (MFA, "Movement of Armed Forces") forces.

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Tingye Li

Dr.

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TIROS-10

TIROS-10 (also called TIROS OT-1) was a spin-stabilized meteorological satellite.

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TIROS-5

TIROS 5 (also called TIROS-E and A-50) was a spin-stabilized meteorological satellite.

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TIROS-6

TIROS 6 (also called TIROS-F) was a spin-stabilized meteorological satellite.

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Title 47 CFR Part 15

Code of Federal Regulations, Title 47, Part 15 (47 CFR 15) is an oft-quoted part of Federal Communications Commission (FCC) rules and regulations regarding unlicensed transmissions.

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Tokyo Skytree

is a broadcasting, restaurant, and observation tower in Sumida, Tokyo, Japan.

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Top (sailing ship)

The top on a traditional square rigged ship, is the platform at the upper end of each (lower) mast.

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TOPEX/Poseidon

TOPEX/Poseidon was a joint satellite mission between NASA, the U.S. space agency; and CNES, the French space agency, to map ocean surface topography.

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Tor Hagfors

Tor Hagfors (18 December 1930 – 17 January 2007) was a Norwegian scientist, radio astronomer, radar expert and a pioneer in the studies of the interactions between electromagnetic waves and plasma.

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Tornado outbreak of April 8–9, 2015

The tornado outbreak of April 8–9, 2015 was a relatively small but damaging outbreak of tornadoes that occurred in parts of the Great Plains and in the Midwestern United States.

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Tornado outbreak of January 21–23, 1999

The January 21–23, 1999 tornado outbreak was the largest tornado outbreak on record during January took place across the Mississippi River Valley.

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Toruń Centre for Astronomy

The Toruń Centre for Astronomy is an optical and radio observatory located at in Piwnice, about 15 km north of Toruń, Poland.

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Total active reflection coefficient

In computation of radiation performance of multi-port antennas especially in multiple-input multiple-output (MIMO) antenna systems total active reflection coefficient, TARC, relates the total incident power to the radiated power.

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Touchscreen

A touchscreen is an input and output device normally layered on the top of an electronic visual display of an information processing system.

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Transducer

A transducer is a device that converts energy from one form to another.

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Transition-edge sensor

A transition-edge sensor or TES is a type of cryogenic energy sensor or cryogenic particle detector that exploits the strongly temperature-dependent resistance of the superconducting phase transition.

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Transmission line

In communications and electronic engineering, a transmission line is a specialized cable or other structure designed to conduct alternating current of radio frequency, that is, currents with a frequency high enough that their wave nature must be taken into account.

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Transmission medium

A transmission medium is a material substance (solid, liquid, gas, or plasma) that can propagate energy waves.

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Transmit and receive integrated assembly

A transmit and receive integrated assembly (TRIA) is used on a two-way satellite dish to process signals to and from a ground-based system and an earth-orbiting satellite.

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Transmitter

In electronics and telecommunications, a transmitter or radio transmitter is an electronic device which produces radio waves with an antenna.

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Transmitter Hamburg-Billstedt

The Transmitter Hamburg-Billstedt is a broadcasting facility in Hamburg-Billstedt, established in 1934.

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Transmitter Heilsberg

The Heilsberg transmitter (Sender Heilsberg) was a large radio transmitting station operated by the Reichs-Rundfunk-Gesellschaft between 1930 and 1945 in the former German Province of East Prussia.

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Transmitter hunting

Transmitter hunting (also known as T-hunting, fox hunting, bunny hunting, and bunny chasing), is an activity wherein participants use radio direction finding techniques to locate one or more radio transmitters hidden within a designated search area.

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Transmitter power output

In radio transmission, transmitter power output (TPO) is the actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces at its output.

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Transmitter station

A transmitter station or transmission facility is an installation used for transmitting radio frequency signals for wireless communication, broadcasting, microwave link, mobile telephone or other purposes.

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Transposed excitation

In electrical engineering, transposed excitation of a dipole array means that adjacent dipoles in the array are excited in opposite directions.

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Transposer

In broadcasting, a transposer or translator is a device in or beyond the service area of a radio or television station transmitter that rebroadcasts signals to receivers which can’t properly receive the signals of the transmitter because of a physical obstruction (like a hill).

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Transverter

;In radio engineering: a transverter is a radio frequency device that consists of an upconverter and a downconverter in one unit.

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Traveling-wave antenna

In radio and telecommunication, a traveling-wave antenna is a class of antenna that uses a traveling wave on a guiding structure as the main radiating mechanism.

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Traveling-wave tube

A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range.

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Treo 700p

The Palm Treo 700p was a cell phone with advanced capabilities, commonly referred to as a smartphone.

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Treo 755p

The Treo 755p is a smartphone developed by Palm, Inc. It was released on May 15, 2007 as the first CDMA Treo without an aerial antenna.

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Tribal-class frigate

The Type 81, or Tribal class, were ordered and built as Sloops to carry out similar duties to the immediate post war Improved Black Swan Sloops and Loch class frigates in the Gulf.

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Triumph Group

Triumph Group, Inc. is an international supplier of aerospace services, structures, systems and support.

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Trump International Hotel and Tower (Chicago)

The Trump International Hotel and Tower, is a skyscraper condo-hotel in downtown Chicago, Illinois.

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Trunnion

A trunnion (from Old French "trognon", trunk) is a cylindrical protrusion used as a mounting or pivoting point.

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Tsada

Tsada (earlier (before 1985) written Tsadha) is a relatively big village 8 km North of Paphos city center.

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TTI, Inc.

TTI, Inc. is a specialty distributor of electronic components that include, but are not limited to: capacitors, resistors, connectors, switches, relays, circuit protection, electromagnetics, discrete semiconductors, sensors, RF modules, antennas, and more.

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Tunable metamaterial

A tunable metamaterial is a metamaterial with a variable response to an incident electromagnetic wave.

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Tuner (radio)

A tuner is a subsystem that receives radio frequency (RF) transmissions like radio broadcasts and converts the selected carrier frequency and its associated bandwidth into a fixed frequency that is suitable for further processing, usually because a lower frequency is used on the output.

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Tupolev Tu-142

The Tupolev Tu-142 (Туполев Ту-142; NATO reporting name: Bear F/J) is a maritime reconnaissance and anti-submarine warfare (ASW) aircraft derived from the Tu-95 turboprop strategic bomber.

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Turbinlite

The Helmore/GEC Turbinlite was a 2,700 million candela (2.7 Gcd) searchlight fitted in the nose of a number of British Douglas Havoc night fighters during the early part of the Second World War and around the time of The Blitz.

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Turnstile antenna

A turnstile antenna, or crossed-dipole antenna, is a radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase.

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Turtles Can Fly

Turtles Can Fly (Kûsî Jî Dikarin Bifirin; کیسەڵەکانیش دەفڕن; لاک‌پشت‌ها هم پرواز می‌کنند) is a 2004 Kurdish war drama film written, produced, and directed by Bahman Ghobadi, with notable theme music composed by Hossein Alizadeh.

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TV and FM DX

TV DX and FM DX is the active search for distant radio or television stations received during unusual atmospheric conditions.

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TVA (Canada)

TVA is a privately owned French language television network in Canada.

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TVOntario

TVOntario (often shortened to TVO and stylized on-air as tvo) is a Canadian publicly funded English language educational television station and media organization serving the Canadian province of Ontario.

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Twin-lead

Twin-lead cable is a two-conductor flat cable used as a balanced transmission line to carry radio frequency (RF) signals.

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Two capacitor paradox

The two capacitor paradox or capacitor paradox is a paradox, or counterintuitive thought experiment, in electric circuit theory.

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Two-ray ground-reflection model

The Two-Rays Ground Reflected Model is a radio propagation model which predicts the path losses between a transmitting antenna and a receiving antenna when they are in LOS (line of sight).

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Two-way radio

A two-way radio is a radio that can do both transmit and receive a signal (a transceiver), unlike a broadcast receiver which only receives content.

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Type 517 Radar

Type 517 radar is believed to be an A-band/VHF air search radar widely deployed on PLA-N surface vessels with 4 antennas in two crossed-brace supported pairs, one above the other, mounted in pairs on each side of a single tubular support carried on the turning gear.

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Type 97 Chi-Ha medium tank

The was a medium tank used by the Imperial Japanese Army during the Second Sino-Japanese War, the Battles of Khalkhin Gol against the Soviet Union, and the Second World War.

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U Television

U Television Sdn.

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U.S. Naval Radio Facility Bagobantay

U.S. Naval Radio Facility Bagobantay was a communications facility of the United States Navy that was located in Quezon City, The Philippines.

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Ultra high frequency

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 megahertz (MHz) and 3 gigahertz (GHz), also known as the decimetre band as the wavelengths range from one meter to one decimeter.

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Unconventional warfare (United States Department of Defense doctrine)

In United States military doctrine, unconventional warfare (abbreviated UW) is one of the core activities of irregular warfare.

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United States Army air defense

United States Army air defense relies on a range of ground launched missiles ranging from hand held to vehicle mounted systems.

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United States Naval Observatory

The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States, with a primary mission to produce Positioning, Navigation and Timing (PNT) for the United States Navy and the United States Department of Defense.

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University of Tehran

The University of Tehran (دانشگاه تهران), also known as Tehran University and UT, is Iran's oldest modern university.

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Unmanned aerial vehicle

An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without a human pilot aboard.

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Upfade

Upfade is the term used in radio communications to describe a situation where multipath conditions (in which signals travel from the transmitter to the receiving antenna by two or more paths) cause a radio signal to gain strength.

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Urocaridella renatekhalafae

Urocaridella renatekhalafae is a species of cave clear cleaner shrimp in the family Palaemonidae.

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USS Haverfield (DE-393)

USS Haverfield (DE-393) was an ''Edsall''-class destroyer escort built for the U.S. Navy during World War II.

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USS Lexington (CV-2)

USS Lexington (CV-2), nicknamed "Lady Lex", was an early aircraft carrier built for the United States Navy.

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USS Oyster Bay (AGP-6)

USS Oyster Bay (AGP-6), originally and later AVP-28, was a United States Navy motor torpedo boat tender in commission from 1943 to 1946.

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USS Parche (SSN-683)

USS Parche (SSN-683), a, was the second ship of the United States Navy to be named for the parche, a small, coral reef butterfly fish.

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USS Richard B. Russell (SSN-687)

USS Richard B. Russell (SSN-687), a attack submarine, has been the only ship of the United States Navy to be named for Richard B. Russell, Jr. (1897–1971), United States Senator from Georgia (1933–1971).

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USS Santee (CVE-29)

The second USS Santee (CVE-29) (originally launched as AO-29, following reclassification as an escort carrier, was originally ACV-29) was launched on 4 March 1939 as Esso Seakay under a Maritime Commission contract (MC hull 3) by the Sun Shipbuilding and Dry Dock Company at Chester, Pennsylvania, sponsored by Mrs.

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USS Saratoga (CV-3)

USS Saratoga (CV-3) was a built for the United States Navy during the 1920s.

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USS Tabberer

USS Tabberer (DE-418) was a acquired by the U.S. Navy during World War II.

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USS Tunny (SS-282)

The USS Tunny (SS/SSG/APSS/LPSS-282) was a which saw service in World War II and in the Vietnam War.

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USS Valcour (AVP-55)

USS Valcour (AVP-55), later AGF-1, was a United States Navy ship in commission as a seaplane tender from 1946 to 1965 and as a flagship from 1965 to 1973.

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V (TV network)

V is a Canadian privately owned French language television network.

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Vanguard 1

Vanguard 1 (ID: 1958-Beta 2) was the fourth artificial Earth orbital satellite to be successfully launched (following Sputnik 1, Sputnik 2, and Explorer 1).

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Vanguard TV0

Vanguard TV-0, also called Vanguard Test Vehicle Zero, was the first sub-orbital test flight of a Vanguard rocket as part of the Project Vanguard.

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Vanguard TV3

Vanguard TV3, also called Vanguard Test Vehicle Three was the first attempt of the United States to launch a satellite into orbit around the Earth.

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Variable capacitor

A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically.

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Variable-frequency oscillator

A variable frequency oscillator (VFO) in electronics is an oscillator whose frequency can be tuned (i.e., varied) over some range.

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Vector inversion generator

A vector inversion generator (VIG) is an electric pulse compression and voltage multiplication device, allowing shaping a slower, lower voltage pulse to a narrower, higher-voltage one.

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Ventus (wireless company)

Ventus is a US based company founded in 1999 and headquartered in Norwalk, Connecticut that provides secure private line wireless services, and manufactures cellular wireless hardware.

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Vertical stabilizer

The vertical stabilizers, vertical stabilisers, or fins, of aircraft, missiles or bombs are typically found on the aft end of the fuselage or body, and are intended to reduce aerodynamic side slip and provide direction stability.

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Very Long Baseline Array

The Very Long Baseline Array (VLBA) is a system of ten radio telescopes which are operated remotely from their Array Operations Center located in Socorro, New Mexico, as a part of the (LBO).

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Very-small-aperture terminal

A very small aperture terminal (VSAT) is a two-way satellite ground station with a dish antenna that is smaller than 3.8 meters.

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Vesnin brothers

The Vesnin brothers: Leonid Vesnin (1880–1933), Victor Vesnin (1882–1950) and Alexander Vesnin (1883–1959) were the leaders of Constructivist architecture, the dominant architectural school of the Soviet Union in the 1920s and early 1930s.

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Victor H. Rumsey

Victor Henry Rumsey (November 22, 1919 – March 11, 2015) was an electrical engineer, best known for his studies of frequency-independent antennas.

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Video over cellular

Video over cellular (VoC), also known as VoCIP (video over cellular Internet Protocol), is a term used for processing streaming video such as surveillance, using high-resolution video cameras over 3G and 4G cellular networks.

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Vijayanarayanam

Vijayanarayanam is a community in South India.

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Villa Las Estrellas

Villa Las Estrellas (English: "The Stars Town") is a Chilean town and research station in Antártica Commune, Antártica Chilena Province, Magallanes and Antártica Chilena Region.

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Visibility graph

In computational geometry and robot motion planning, a visibility graph is a graph of intervisible locations, typically for a set of points and obstacles in the Euclidean plane.

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Vivaldi antenna

A Vivaldi antenna or tapered slot antenna is a co-planar broadband-antenna, which can be made from a solid piece of sheet metal, a printed circuit board, or from a dielectric plate metalized on one or both sides.

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W250BC

W250BC (97.9 MHz) is an FM translator radio station located in Atlanta, Georgia, and has Riverdale, Georgia (a southern suburb) as its city of license.

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W255CJ

W255CJ FM 98.9 is a 200-watt "broadcast translator" radio station in Atlanta, Georgia, US, and currently off the air due to a dispute with another station on the same frequency, in a case that is currently being reviewed by the FCC.

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WABY (AM)

WABY (900 AM) is a radio station licensed to Watervliet, New York.

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WAEZ

WAEZ (94.9 FM) is a Mainstream Top 40 radio station serving the Tri-Cities TN-VA Metropolitan Statistical Area with an ERP of 100,000 watts.

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Waffle-iron filter

A waffle-iron filter is a type of waveguide filter used at microwave frequencies for signal filtering.

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WAFS (AM)

WAFS, AM 1190, is radio station licensed to Atlanta, Georgia that broadcasts business news talk radio programming.

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WAGX

WAGX (101.3 FM) is a radio station broadcasting a Classic Hits format.

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Walkie-talkie

A walkie-talkie (more formally known as a handheld transceiver, or HT) is a hand-held, portable, two-way radio transceiver.

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Walter Rotman

Walter Rotman (August 24, 1922 – May 19, 2007) was an American scientist known for his work in radar and antenna design.

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WAOS

WAOS, "La Mejor", is a Spanish language, Regional Mexican talk radio, AM radio broadcaster licensed to the city Austell, Georgia in the Atlanta, Georgia radio market.

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War of the Monsters

War of the Monsters is a 3D fighting game for the PlayStation 2 developed by Incognito Entertainment and published by Sony Computer Entertainment.

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Wardriving

Wardriving is the act of searching for Wi-Fi wireless networks by a person usually in a moving vehicle, using a laptop or smartphone.

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WARM (AM)

WARM (590 AM) is a radio station licensed to the city of Scranton, Pennsylvania.

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Warsaw radio mast

The Warsaw Radio Mast was the world's tallest structure from 1974 until its collapse on 8 August 1991.

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Washington State Patrol

The Washington State Patrol (WSP) is the state police agency for the U.S. state of Washington.

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Wave propagation

Wave propagation is any of the ways in which waves travel.

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Waveguide (electromagnetism)

In electromagnetics and communications engineering, the term waveguide may refer to any linear structure that conveys electromagnetic waves between its endpoints.

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WAZL

WAZL is an AM broadcasting radio station licensed to the city of Hazleton, Pennsylvania with service area extending to the Wilkes-Barre/Scranton radio market.

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WAZX (AM)

WAZX is a radio station licensed to the city of Smyrna, Georgia serving the Atlanta area radio market.

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WBAM-FM

WBAM, also known as Bama Country 98.9, is a country music formatted radio station that serves the Montgomery Metropolitan Area, broadcasting on the FM band at a frequency of 98.9 MHz and licensed to Montgomery, Alabama.

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WBFY-LP

WBFY-LP is a low-power, community radio station in Belfast, Maine, United States.

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WCDL

WCDL is an AM broadcasting radio station licensed to Carbondale, Pennsylvania.

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WCES-TV

WCES-TV channel 20 is a non-commercial educational television station licensed to Wrens, Georgia, USA.

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WDET-FM

WDET-FM is a public radio station in Detroit, Michigan.

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WDUN (AM)

WDUN (550 AM), known as "North Georgia's Newstalk", is a News/Talk radio formatted radio station licensed to the city Gainesville, Georgia, in the Atlanta, Georgia radio market.

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WDZH

WDZH (98.7 FM, "98-7 AMP Radio") is a Top 40 (CHR)-formatted radio station serving the Metropolitan Detroit area in Southeastern Michigan.

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Weber bar

A Weber bar is a device used in the detection of gravitational waves first devised and constructed by physicist Joseph Weber at the University of Maryland.

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WECT tower

The WECT Tower was a -tall mast used as antenna for TV-broadcasting, including broadcasting the analog television signal of WECT channel 6.

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Weltron

Weltron is an electronics manufacturer and retailer, based in Oxford, North Carolina.

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Wenvoe transmitting station

The Wenvoe transmitting station is a facility for broadcasting and telecommunications situated close to the village of Wenvoe in the Vale of Glamorgan, Wales, in the UK.

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West Island, Cocos (Keeling) Islands

West Island (Malay: Pulau Panjang, Cocos Malay: Pulu Panjang) is the capital of the Cocos (Keeling) Islands.

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Westerbork Synthesis Radio Telescope

The Westerbork Synthesis Radio Telescope (WSRT) is an aperture synthesis interferometer near World War II Nazi detention and transit camp Westerbork, north of the village of Westerbork, Midden-Drenthe, in the northeastern Netherlands.

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Westin Peachtree Plaza Hotel

The Westin Peachtree Plaza, Atlanta is a skyscraper hotel on Peachtree Street in downtown Atlanta, Georgia adjacent to the Peachtree Center complex and the former Davison's/Macy's flagship store with 1073 rooms.

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WEZC

WEZC (95.9 MHz) is a commercial FM radio station licensed to Clinton, Illinois.

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WGFA-FM

WGFA-FM is an Adult Contemporary formatted broadcast radio station licensed to Watseka, Illinois, serving Central Illiana.

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WGFS

WGFS (1430 AM), is a radio station broadcasting an multicultural format.

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WGHR (college radio)

WGHR is a noncommercial radio station operated solely by the students of Southern Polytechnic State University in Marietta, Georgia, United States.

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WGPB

WGPB FM 97.7 is a public radio station in Rome, Georgia.

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WGRM (AM)

WGRM (1240 AM) is an American radio station licensed to serve Greenwood, Mississippi, United States.

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WHCA Roadrunner

The White House Communications Agency Roadrunner Vehicle is an element of every American presidential motorcade.

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Whip antenna

A whip antenna is an antenna consisting of a straight flexible wire or rod.

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Whisker (metallurgy)

Metal whiskering is a phenomenon which occurs in electrical devices when metals form long whisker-like projections over time.

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WHOW

WHOW (1520 kHz, "The Big 1520") is a commercial AM radio station licensed to Clinton, Illinois, United States.

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WHTA

WHTA (107.9 FM), is a mainstream urban radio station based in Atlanta, Georgia that plays mostly hip-hop.

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WHUS

WHUS is the commercial-free college radio station of the University of Connecticut.

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WHZN

WHZN is a Modern Worship formatted broadcast radio station licensed in New Whiteland, Indiana, United States, serving the metropolitan Indianapolis area and surrounding communities.

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WIBT

WIBT (97.9 FM) is a radio station licensed to Greenville, Mississippi, United States.

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Wideband

In communications, a system is wideband when the message bandwidth significantly exceeds the coherence bandwidth of the channel.

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Willis Tower

The Willis Tower, built as and still commonly referred to as the Sears Tower, is a 110-story, skyscraper in Chicago, Illinois.

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Willo the Wisp

Willo the Wisp is a British cartoon series originally produced in 1981 by the BBC and narrated by Kenneth Williams.

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WIND (spacecraft)

The Global Geospace Science (GGS) Wind satellite is a NASA science spacecraft launched at 04:31:00 EST on November 1, 1994, from launch pad 17B at Cape Canaveral Air Force Station (CCAFS) in Merritt Island, Florida aboard a McDonnell Douglas Delta II 7925-10 rocket.

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Wind profiler

A wind profiler is a type of weather observing equipment that uses radar or sound waves (SODAR) to detect the wind speed and direction at various elevations above the ground.

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Window function

In signal processing, a window function (also known as an apodization function or tapering function) is a mathematical function that is zero-valued outside of some chosen interval.

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Winter Hill transmitting station

The Winter Hill transmitting station is a broadcasting and telecommunications site on Winter Hill, at the southern boundary of the Borough of Chorley, and above Bolton in Greater Manchester, England.

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WIRE-CD

WIRE-CD is a low-power digital television station in metro Atlanta.

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Wireless

Wireless communication, or sometimes simply wireless, is the transfer of information or power between two or more points that are not connected by an electrical conductor.

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Wireless access point

20018 In computer networking, a wireless access point (WAP), or more generally just access point (AP), is a networking hardware device that allows a Wi-Fi device to connect to a wired network.

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Wireless home phone

A wireless home phone service is a service that allows a regular wired telephone to connect to a cellular network, as if it were a mobile phone.

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Wireless intrusion prevention system

In computing, a wireless intrusion prevention system (WIPS) is a network device that monitors the radio spectrum for the presence of unauthorized access points (intrusion detection), and can automatically take countermeasures (intrusion prevention).

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Wireless Leiden

Wireless Leiden is a wireless community network in Leiden, Netherlands.

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Wireless local loop

Wireless local loop (WLL), is the use of a wireless communications link as the "last mile / first mile" connection for delivering plain old telephone service (POTS) or Internet access (marketed under the term "broadband") to telecommunications customers.

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Wireless network interface controller

A wireless network interface controller (WNIC) is a network interface controller which connects to a wireless radio-based computer network, rather than a wired network, such as Token Ring or Ethernet.

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Wireless power transfer

Wireless power transfer (WPT), wireless power transmission, wireless energy transmission, or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link.

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Wireless sensor network

Wireless sensor network (WSN) refers to a group of spatially dispersed and dedicated sensors for monitoring and recording the physical conditions of the environment and organizing the collected data at a central location.

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Wireless telegraphy

Wireless telegraphy is the transmission of telegraphy signals from one point to another by means of an electromagnetic, electrostatic or magnetic field, or by electrical current through the earth or water.

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Wireless Thessaloniki

Wireless Thessaloniki is an experimental wireless community network growing in the air of Thessaloniki, Greece.

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WITI TV Tower

The WITI Tower in Milwaukee, Wisconsin was completed in August 1962 and was briefly the tallest free-standing tower in the world, rising 1081 feet (329.4 m).

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WJIE-FM

WJIE-FM (88.5 FM) is a radio station broadcasting a Contemporary Christian format.

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WJKN-FM

WJKN-FM (89.3 FM, "HOME.fm") is a non-commercial radio station located in Spring Arbor, Michigan.

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WJR

WJR (760 AM) is a radio station in Detroit, Michigan, United States.

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WJSP-TV

WJSP-TV 23 (DTV 28.1/2/3), part of the Georgia Public Broadcasting (GPB) Public Broadcasting Service (PBS) member Public broadcasting network, serves Columbus, Georgia and the surrounding west-central Georgia and far east-central Alabama region.

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WKXQ (defunct)

WKXQ (1600 AM) was an American radio station licensed to serve the community of Reidsville, North Carolina.

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WKZN

WKZN is an AM broadcasting radio station licensed to the city of West Hazleton, Pennsylvania with service area extending out to the Wilkes-Barre/Scranton radio market.

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WLFJ-FM

WLFJ-FM is a non-commercial Contemporary Christian music station licensed to Greenville, South Carolina and serves the Upstate, including Greenville and Spartanburg.

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WLTA

WLTA is a Christian talk radio station licensed to Alpharetta, Georgia, United States.

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WMPZ

WMPZ (93.5 FM) is a commercial radio station located in Harrison, Tennessee, broadcasting to the Chattanooga, Tennessee area.

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WMUA

No description.

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WNCC (FM)

WNCC FM 104.1 is a radio station broadcasting a country music format.

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WNIV

WNIV is a Christian talk radio station licensed to Atlanta in the U.S. state of Georgia.

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WokFi

WokFi (a portmanteau derived from blending the words Wok + Wi-Fi) is a slang term for a style of homemade Wi-Fi antenna consisting of a crude parabolic antenna made with a low-cost Asian kitchen wok, spider skimmer or similar household metallic dish.

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World Radiosport Team Championship

The World Radiosport Team Championship is an amateur radio contest.

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World Trade Center in popular culture

The original World Trade Center, which featured the landmark Twin Towers (1 WTC and 2 WTC), was a building complex in the Financial District in Lower Manhattan, New York City.

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WORW

WORW (91.9 FM, "The Wave") is a high school radio station located in Port Huron Northern High School broadcasting a CHR/Top 40 format.

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WPBA (TV)

WPBA (or simply PBA30; channel 30.1, DTV 21) is one of two PBS-member TV stations in the Atlanta metropolitan area.

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WPBS (AM)

No description.

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WPLO

WPLO ("La Bonita 610 AM") is an Atlanta area AM broadcasting station, licensed to Grayson, Georgia, that broadcasts Spanish language music programming.

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WPWX

WPWX (92.3 FM) is an Urban Contemporary radio station licensed to Hammond, Indiana and serving the Chicago market in addition to northwest Indiana, and is owned by Crawford Broadcasting.

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WPYK

WPYK (104.1 FM) is a radio station licensed to New Boston, Ohio.

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WREB

WREB is a radio station licensed to Greencastle, Indiana, broadcasting at 94.3 MHz in FM.

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WREK

WREK ("Wreck", from the Ramblin' Wreck) is the radio station staffed by the students of the Georgia Institute of Technology.

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WREL (technology)

WREL (Wireless Resonant Energy Link) is a form of wireless resonant energy transfer technology developed by Intel.

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WSB-FM

WSB-FM (98.5 FM) is an Atlanta radio station.

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WSDM (FM)

WSDM is a radio station broadcasting a Catholic talk radio and sports radio format broadcasting Ave Maria Radio and EWTN programming, as well as North Posey sports.

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WSKC-CD

WSKC-CD is a low-power television station in metro Atlanta, operating on TV channel 22.

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WSRV

WSRV (97.1 FM; "97.1 The River") is a rock-leaning classic-hits–formatted radio station that plays music from the 1960s, 1970s, and 1980s.

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WSTR (FM)

WSTR FM 94.1 MHz ("Star 94.1") is a CHR-leaning Top 40 Atlanta FM radio station licensed to Smyrna, Georgia and owned by Entercom.

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WTBS-LD

WTBS-LP and WTBS-LD is a low-power TV station on TV channels 6 (analog) and 30 and PSIP channel 26 (digital) in metro Atlanta.

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WTCY

WTCY 88.3 FM is a Catholic radio station licensed to Greilickville, Michigan serving the Traverse City area of the northwestern region of Michigan's lower peninsula.

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WTJH

WTJH was an AM broadcasting station licensed to the city of East Point, Georgia, United States, broadcasting on the frequency of 1260 kHz with 5,000 Watts of power during daytime hours, and only 39 Watts of power during nighttime hours with a non-directional antenna pattern.

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WTVN

WTVN (610 kHz) is a commercial AM radio station located in Columbus, Ohio.

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WTZA

WTZA AM 1010 is a radio station licensed to serve Atlanta, Georgia, that broadcasts Spanish Christian music as "Vida 1010AM/102.1FM " It broadcasts at a frequency of 1010 kHz with 50,000 watts of power during the daytime, covering north Georgia, 45,000 watts during critical hours and 78 watts during nighttime hours, using an omnidirectional antenna.

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Wuhan World Trade Tower

The Wuhan World Trade Tower is a 273-meter (896 foot) tall skyscraper located in Wuhan, China.

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Wullenweber

The Wullenweber (the original name introduced by Dr. Hans Rindfleisch was Wullenwever) is a type of Circularly Disposed Antenna Array (CDAA) sometimes referred to as a Circularly Disposed Dipole Array (CDDA).

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WUVG-DT

WUVG-DT, virtual channel 34 (UHF digital channel 48), is a Univision owned-and-operated television station serving Atlanta, Georgia, United States that is licensed to Athens.

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WVEE

WVEE (103.3 FM, "V-103") is an urban contemporary formatted radio station in Atlanta, Georgia.

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WVUM

WVUM (90.5 FM) is a non-commercial alternative and electronic music college radio station at the University of Miami in Coral Gables, Florida United States, broadcasting over-the-air to Greater Miami and streaming online via Internet radio.

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WVVS-FM

WVVS-FM (90.9 FM) is a radio station broadcasting a college radio format, and licensed to serve Valdosta, Georgia, United States.

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WWDP

WWDP, virtual channel 46 (VHF digital channel 10), is an Evine-affiliated television station serving Boston, Massachusetts, United States that is licensed to Norwell.

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WWDV

WWDV (96.9 FM) is a radio station in Zion, Illinois, known as "The Drive".

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WWPW

WWPW FM 96.1 — branded Power 96-1 — is a commercial top-40 (CHR) radio station licensed to Atlanta, Georgia.

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WWRB

WWRB is a shortwave international broadcasting station known as both "World Wide Religious Broadcasting" and (to a lesser extent) "World Wide Radio Broadcasting" broadcasting from Morrison, Tennessee.

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WWSZ

WWSZ is an Atlanta area AM broadcast station licensed to Decatur, Georgia.

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WWV (radio station)

WWV is the call sign of the United States National Institute of Standards and Technology's (NIST) HF ("shortwave") radio station located near Fort Collins, Colorado.

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WWVB

WWVB is a time signal radio station near Fort Collins, Colorado and is operated by the National Institute of Standards and Technology (NIST).

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WYTJ

WYTJ is a non-commercial and non-profit Christian music radio station licensed to Linton, IN.

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WYZE

WYZE is an AM broadcasting station licensed to the city of Atlanta, Georgia broadcasting on the frequency of 1480 kHz with 10,000 Watts of power during daytime hours, and only 44 Watts of power during nighttime hours with a non-directional antenna pattern.

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WZIS-FM

WZIS-FM (The Monkey) was formerly WMHD-FM, the student radio station at Rose-Hulman Institute of Technology in Terre Haute, Indiana.

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WZMF

WZMF is an AM broadcasting radio station licensed to the city of Nanticoke, Pennsylvania and serves the Wilkes-Barre, Scranton, and Hazleton radio markets with a Classic Hits format, switching from Adult Standards and Tropical and Spanish language adult contemporary format in December 2008.

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XAF radar

The XAF was an experimental radar set constructed in 1938, which survived World War II as a historical artifact, and is now placed on exhibit at the Historical Electronics Museum, located in Linthicum, Maryland.

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XFM Manchester

Xfm Manchester was a commercial radio station broadcasting alternative and indie music to Manchester in North West England.

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Yagi–Uda antenna

A Yagi–Uda antenna, commonly known as a Yagi antenna, is a directional antenna consisting of multiple parallel elements in a line, usually half-wave dipoles made of metal rods.

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Yahya Rahmat-Samii

Yahya Rahmat-Samii (born August 20, 1948) is Professor and holder of the Northrop Grumman Chair in Electromagnetics at Electrical Engineering Department at the University of California, Los Angeles, where he teaches and conducts research on microwave transmission and radio antennas.

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YLC-15 Radar

YLC-15 is a fully coherent, Pulse Doppler air defence radar of Chinese origin.

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Yosami Transmitting Station

Yosami Transmitting Station was a very large transmitting station for intercontinental communication and for submarine communication in the VLF-range at Kariya, Aichi, Japan.

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Yuri (satellite)

Yuri, also known as Broadcasting Satellite or BS, was a series of Japanese direct broadcast satellites.

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Zarya (antenna)

A Zarya Antenna is a special type of directional mediumwave broadcasting antenna consisting of a long straight row of grounded lattice towers with a height of approximately 50 metres in a distance of 100 metres.

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Zorica Pantić

Zorica Pantić, also known as Zorica Pantić-Tanner, is a university administrator who is currently president of Wentworth Institute of Technology in Boston and a professor of electrical engineering.

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1000 de La Gauchetière

1000 de la Gauchetière is a skyscraper in Montreal, Quebec, Canada.

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108 St Georges Terrace

108 St Georges Terrace or South32 Tower (formerly known as Bankwest Tower, the Bond Tower and the R&I Tower) is a 50-storey office tower in Perth, Western Australia.

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1250 René-Lévesque

1250 René-Lévesque, also known as the IBM-Marathon Tower, is a, 47-story skyscraper in Montreal, Quebec, Canada.

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15-meter band

The 15-meter band (also called the 21-MHz band or 15 meters) is an amateur radio frequency band spanning the shortwave spectrum from 21 to 21.45 MHz.

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160-meter band

Just above the mediumwave broadcast band, 160 meters refers to the band of radio frequencies between 1800 and 2000 kHz, which is the lowest radio frequency band allocated for use by amateur radio in most countries.

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1801 California Street

1801 California Street is a skyscraper in Denver, Colorado.

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1950s American automobile culture

1950s American automobile culture has had an enduring influence on the culture of the United States, as reflected in popular music, major trends from the 1950s and mainstream acceptance of the "hot rod" culture.

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1985 Mexico City earthquake

The 1985 Mexico City earthquake struck in the early morning of 19 September at 07:17:50 (CST) with a moment magnitude of 8.0 and a Mercalli intensity of IX (Violent).

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1worldspace

1worldspace, known for most of its existence simply as 'WorldSpace', is a defunct satellite radio network that in its heyday provided service to over 170,000 subscribers in eastern and southern Africa, the Middle East, and much of Asia with 96% coming from India.

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2-Headed Shark Attack

2-Headed Shark Attack is an American low-budget horror film with an ensemble cast by The Asylum, released on January 31, 2012 in the United States.

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2007 in spaceflight

The year 2007 contained several significant events in spaceflight, including a Chinese ASAT test, the launches of the US Phoenix and Dawn missions to study Mars and Asteroid belt respectively, Japan's Kaguya Lunar orbiter, and the first Chinese Lunar probe, Chang'e 1.

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2015 Esperance bushfires

The 2015 Esperance bushfires were a series of catastrophic bushfires that burned from 15 to 26 November and affected the Goldfields-Esperance region in the Australian state of Western Australia.

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2200-meter band

The 2200 meter or 136 kHz band is the lowest frequency band in which amateur radio operators are allowed to transmit.

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33-centimeter band

The 33-centimeter or 900 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio on a secondary basis.

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3803 KM

3803 KM is the designation of a free-standing lattice tower used for broadcasting purposes, which was built in several towns of former Soviet Union after 1954 for FM- and TV-broadcasting.

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5G

5G is a marketing term for some new mobile technologies.

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60-meter band

The 60 meter band or 5 MHz band is a relatively new amateur radio allocation, first introduced in 2002, that was originally only available in a few countries, such as the United States, United Kingdom, Norway, Finland, Denmark, Ireland and Iceland.

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Aerial (radio), Aerial Wire, Antena (radio), Antenna (astronomy), Antenna (electromagnetism), Antenna (electronics), Antenna theory, Antennas, External antenna, External removable antenna, GP antenna, Polarization (antenna), Polarization (antennas), Radio Antenna, Radio antenna, Radio antennae, Radio antennas, TV Aerial.

References

[1] https://en.wikipedia.org/wiki/Antenna_(radio)