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Radio spectrum

Index Radio spectrum

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz). [1]

152 relations: A band (NATO), Active Denial System, Airband, Alphabet, AM broadcasting, Amateur radio, Amateur radio frequency allocations, Apex (radio band), Automatic dependent surveillance – broadcast, Automatic link establishment, Avalanche transceiver, B band (NATO), Bandplan, Bandstacked, Base station, Bluetooth, Business band, C band (IEEE), C band (NATO), Cellular frequencies, Cellular network, Citizens band radio, Co-channel interference, Cognitive radio, Communication channel, Communication protocol, Communication with submarines, Communications satellite, Condensed matter physics, Cordless telephone, D band (NATO), D band (waveguide), Dedicated short-range communications, DXing, Dynamic spectrum management, E band (NATO), E band (waveguide), Electromagnetic radiation, Electromagnetic spectrum, Extremely high frequency, Extremely low frequency, F band (NATO), F band (waveguide), Family Radio Service, Fire-control system, FM broadcast band, FM broadcasting, Frequency, Frequency allocation, G band (NATO), ..., Garage door opener, General Mobile Radio Service, Geneva Frequency Plan of 1975, Geophysics, German language, Global Positioning System, H band (NATO), Heart rate monitor, Hertz, High frequency, I band (NATO), Infrared, Institute of Electrical and Electronics Engineers, International Telecommunication Union, ISM band, ITU Radio Regulations, J band (NATO), K band (IEEE), K band (NATO), Ka band, Ku band, L band, L band (NATO), Longwave, Low frequency, M band (NATO), Marine VHF radio, Medium frequency, Medium wave, Meteorology, Microwave, Microwave oven, Microwave transmission, Millimeter wave scanner, Mobile phone, Mobile radio, Near vertical incidence skywave, North American Regional Broadcasting Agreement, Open spectrum, Over-the-horizon radar, Personal radio service, Police radio, Professional mobile radio, Q band, Radar, Radio, Radio astronomy, Radio clock, Radio control, Radio navigation, Radio receiver, Radio spectrum, Radio wave, Radio-frequency identification, Radiocommunication service, Radiotelephone, Remote sensing, Reticle, S band, Satellite radio, Satellite television, Scanner (radio), Shortwave bands, Shortwave radio, Spectrum management, Spread spectrum, Super high frequency, Super low frequency, Supreme Allied Commander Atlantic, Telecommunication, Television, Television channel frequencies, Terahertz radiation, Terahertz time-domain spectroscopy, The Post Office Electrical Engineers' Journal, Through-the-earth mine communications, Transmitter, Trunking, TV-band device, Two-way radio, U-NII, UBV photometric system, UHF CB, Ultra high frequency, Ultra low frequency, Ultra-wideband, V band, Very high frequency, Very low frequency, W band, Walkie-talkie, WARC bands, Wavelength, Weather radio, Wi-Fi, Wireless LAN, World War II, X band, Zigbee, 2182 kHz, 500 kHz, 6-meter band. Expand index (102 more) »

A band (NATO)

The NATO A band is the obsolete designation given to the radio frequencies from 0 to 250 MHz (equivalent to wavelengths from 1.2 m upwards) during the cold war period.

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Active Denial System

The Active Denial System (ADS) is a non-lethal, directed-energy weapon developed by the U.S. military, designed for area denial, perimeter security and crowd control.

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Airband

Airband or aircraft band is the name for a group of frequencies in the VHF radio spectrum allocated to radio communication in civil aviation, sometimes also referred to as VHF, or phonetically as "Victor".

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Alphabet

An alphabet is a standard set of letters (basic written symbols or graphemes) that is used to write one or more languages based upon the general principle that the letters represent phonemes (basic significant sounds) of the spoken language.

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AM broadcasting

AM broadcasting is a radio broadcasting technology, which employs amplitude modulation (AM) transmissions.

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Amateur radio

Amateur radio, also known as ham radio, describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication.

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Amateur radio frequency allocations

Amateur radio frequency allocation is done by national telecommunications authorities.

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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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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 link establishment

Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF radio communications.

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Avalanche transceiver

Avalanche transceivers or avalanche beacons are a class of active radio transceivers operating at 457 kHz and specialized for the purpose of finding people or equipment buried under snow.

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B band (NATO)

The NATO B band is the obsolete designation given to the radio frequencies from 250 to 500 MHz (equivalent to wavelengths between 1.20 and 0.60 m) during the cold war period.

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Bandplan

A bandplan or band plan is a plan for using a particular band of radio frequencies, that are a portion of the electromagnetic spectrum.

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Bandstacked

The term Bandstacked applies to an antenna or satellite feedhorn (LNBF) that is designed to operate on two or more bands of frequencies.

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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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Bluetooth

Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485GHz) from fixed and mobile devices, and building personal area networks (PANs).

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Business band

The business band is the name used by US radio users who utilize and scanner hobbyists who listen to the Federal Communications Commission (FCC) Industrial/Business pool frequencies.

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C band (IEEE)

The C-band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz); however, this definition is the one used by radar manufacturers and users, not necessarily by microwave radio telecommunications users.

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C band (NATO)

The NATO C-band is the obsolete designation given to the radio frequencies from 500 to 1000 MHz (equivalent to wavelengths between 0.6 and 0.3 m) during the cold war period.

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Cellular frequencies

Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices, such as mobile phones, to connect to cellular networks.

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Cellular network

A cellular network or mobile network is a communication network where the last link is wireless.

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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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Co-channel interference

Co-channel interference or CCI is crosstalk from two different radio transmitters using the same channel.

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Cognitive radio

A cognitive radio (CR) is a radio that can be programmed and configured dynamically to use the best wireless channels in its vicinity to avoid user interference and congestion.

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Communication channel

A communication channel or simply channel refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer networking.

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Communication protocol

In telecommunication, a communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity.

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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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Condensed matter physics

Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter.

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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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D band (NATO)

The NATO D band is the obsolete designation given to the radio frequencies from 1.0 to 2.0 GHz (equivalent to wavelengths between 30 and 15 cm) during the cold war period.

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D band (waveguide)

The waveguide D band is the range of radio frequencies from 110 GHz to 170 GHz in the electromagnetic spectrum, corresponding to the recommended frequency band of operation of the WR6 and WR7 waveguides.

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Dedicated short-range communications

Dedicated short-range communications are one-way or two-way short-range to medium-range wireless communication channels specifically designed for automotive use and a corresponding set of protocols and standards.

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DXing

DXing is the hobby of receiving and identifying distant radio or television signals, or making two way radio contact with distant stations in amateur radio, citizens' band radio or other two way radio communications.

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Dynamic spectrum management

Dynamic spectrum management (DSM), also referred to as dynamic spectrum access (DSA), is a set of techniques based on theoretical concepts in network information theory and game theory that is being researched and developed to improve the performance of a communication network as a whole.

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E band (NATO)

The NATO E band is a designation given to the radio frequencies from 2 000 to 3 000 MHz (equivalent to wavelengths between 15 and 10 cm) during the cold war period.

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E band (waveguide)

The waveguide E band is the range of radio frequencies from 60 GHz to 90 GHz in the electromagnetic spectrum, corresponding to the recommended frequency band of operation of WR12 waveguides.

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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 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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Extremely high frequency

Extremely high frequency (EHF) is the International Telecommunication Union (ITU) designation for the band of radio frequencies in the electromagnetic spectrum from 30 to 300 gigahertz (GHz).

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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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F band (NATO)

The NATO F band is the obsolete designation given to the radio frequencies from 3 000 to 4 000 MHz (equivalent to wavelengths between 10 and 7.5 cm) during the cold war period.

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F band (waveguide)

The waveguide F band is the range of radio frequencies from 90 GHz to 140 GHz in the electromagnetic spectrum, corresponding to the recommended frequency band of operation of WR8 waveguides.

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Family Radio Service

The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996.

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Fire-control system

A fire-control system is a number of components working together, usually a gun data computer, a director, and radar, which is designed to assist a weapon system in hitting its target.

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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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FM broadcasting

FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology.

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Frequency

Frequency is the number of occurrences of a repeating event per unit of time.

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Frequency allocation

Frequency allocation (or spectrum allocation or spectrum management) is the allocation and regulation of the electromagnetic spectrum into radio frequency bands, which is normally done by governments in most countries.

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G band (NATO)

The NATO G band is the obsolete designation given to the radio frequencies from 4 000 to 6 000 MHz (equivalent to wavelengths between 7.5 and 5 cm) during the cold war period.

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Garage door opener

A garage door opener is a motorized device that opens and closes garage doors.

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General Mobile Radio Service

The General Mobile Radio Service (GMRS) is a land-mobile FM UHF radio service designed for short-distance two-way communication.

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Geneva Frequency Plan of 1975

The Geneva Frequency Plan of 1975 (Aka "The Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975" or simply "GE75") is the internationally agreed frequency plan which was drawn up to implement the provisions of the Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) held in Geneva, Switzerland, in 1975.

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Geophysics

Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.

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German language

German (Deutsch) is a West Germanic language that is mainly spoken in Central Europe.

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Global Positioning System

The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Air Force.

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H band (NATO)

The NATO H band is the obsolete designation given to the radio frequencies from 6 000 to 8 000 MHz (equivalent to wavelengths between 5 and 3.75 cm) during the cold war period.

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Heart rate monitor

A heart rate monitor is a personal monitoring device that allows one to measure one's heart rate in real time or record the heart rate for later study.

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Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

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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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I band (NATO)

The NATO I band is the obsolete designation given to the radio frequencies from 8 000 to 10 000 MHz (equivalent to wavelengths between 3.75 and 3 cm) during the Cold War period.

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Infrared

Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.

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Institute of Electrical and Electronics Engineers

The Institute of Electrical and Electronics Engineers (IEEE) is a professional association with its corporate office in New York City and its operations center in Piscataway, New Jersey.

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International Telecommunication Union

The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.

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ISM band

The industrial, scientific and medical (ISM) radio bands are radio bands (portions of the radio spectrum) reserved internationally for the use of radio frequency (RF) energy for industrial, scientific and medical purposes other than telecommunications.

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ITU Radio Regulations

The ITU Radio Regulations (short: RR) regulates on law of nations scale radiocommunication services and the utilisation of radio frequencies.

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J band (NATO)

The NATO J band is the obsolete designation given to the radio frequencies from 10 to 20 GHz (equivalent to wavelengths between 3 and 1.5 cm) during the cold war period.

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K band (IEEE)

The IEEE K band is a portion of the radio spectrum in the microwave range of frequencies from 18 to 27 gigahertz (GHz).

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K band (NATO)

The NATO K band is the obsolete designation given to the radio frequencies from 20 to 40 GHz (equivalent to wavelengths between 1.5 and 0.75 cm) during the cold war period.

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Ka band

The Ka band (pronounced as either "kay-ay band" or "ka band") is a portion of the microwave part of the electromagnetic spectrum defined as frequencies in the range 26.5–40 gigahertz (GHz), i.e. wavelengths from slightly over one centimeter down to 7.5 millimeters.

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Ku band

The Ku band is the portion of the electromagnetic spectrum in the microwave range of frequencies from 12 to 18 gigahertz (GHz).

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L band

The L band is the Institute of Electrical and Electronics Engineers (IEEE) designation for the range of frequencies in the radio spectrum from 1 to 2 gigahertz (GHz).

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L band (NATO)

The NATO L band is the obsolete designation given to the radio frequencies from 40 to 60 GHz (equivalent to wavelengths between 7.5 and 5 mm) during the cold war period.

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Longwave

In radio, longwave, long wave or long-wave, and commonly abbreviated LW, refers to parts of the radio spectrum with wavelengths longer than what was originally called the medium-wave broadcasting band.

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Low frequency

Low frequency (low freq) or LF is the ITU designation for radio frequencies (RF) in the range of 30 kilohertz (kHz)–300 kHz.

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M band (NATO)

The NATO M band is the obsolete designation given to the radio frequencies from 60 to 100 GHz (equivalent to wavelengths between 5 and 3 mm) during the cold war period.

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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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Medium frequency

Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz).

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Medium wave

Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting.

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Meteorology

Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.

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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 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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Millimeter wave scanner

A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing using a form of electromagnetic radiation.

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Mobile phone

A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.

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Mobile radio

Mobile radio or mobiles refer to wireless communications systems and devices which are based on radio frequencies(using commonly UHF or VHF frequencies), and where the path of communications is movable on either end.

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Near vertical incidence skywave

Near vertical incidence skywave, or NVIS, is a skywave radio-wave propagation path that provides usable signals in the range between groundwave and conventional skywave distances—usually 30–400 miles (50–650 km).

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North American Regional Broadcasting Agreement

The North American Regional Broadcasting Agreement, commonly abbreviated as NARBA, refers to a series of international treaties that defined technical standards for AM band (mediumwave) radio stations.

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Open spectrum

Open spectrum (also known as free spectrum) is a movement to get the Federal Communications Commission to provide more unlicensed radio-frequency spectrum that is available for use by all.

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Over-the-horizon radar

Over-the-horizon radar, or OTH (sometimes called beyond the horizon, or BTH), is a type of radar system with the ability to detect targets at very long ranges, typically hundreds to thousands of kilometres, beyond the radar horizon, which is the distance limit for ordinary radar.

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Personal radio service

A personal radio service is any system that allows individual to operate radio transmitters and receivers for personal purposes with minimal or no special license or individual authorization.

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Police radio

Police radio is a communications radio system used by law enforcement agencies all over the world.

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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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Q band

The Q band is a range of frequencies contained in the microwave region of the electromagnetic spectrum.

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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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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 clock

A radio clock or radio-controlled clock (RCC) is a clock that is automatically synchronized by a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock.

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Radio control

Radio control (often abbreviated to R/C or simply RC) is the use of radio signals to remotely control a device.

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Radio navigation

Radio navigation or radionavigation is the application of radio frequencies to determine a position of an object on the Earth.

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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 spectrum

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3 000 GHz (3 THz).

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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 identification

Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects.

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Radiocommunication service

Radiocommunication service is according to Article 1.19 of the International Telecommunication Union´s (ITU)RR, defined as “a service…involving the transmission, emission and/or reception of radio waves for specific telecommunication purposes”.

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Radiotelephone

A radiotelephone (or radiophone) is a communications system for transmission of speech over radio.

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Remote sensing

Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation.

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Reticle

A reticle, or reticule, also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of a sighting device, such as a telescopic sight in a telescope, a microscope, or the screen of an oscilloscope, to provide references during visual examination.

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S band

The S band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a part of the microwave band of the electromagnetic spectrum covering frequencies from 2 to 4 gigahertz (GHz).

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Satellite radio

Satellite radio is defined by the International Telecommunication Union (ITU)'S ITU Radio Regulations (RR) as a broadcasting-satellite service.

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Satellite television

Satellite television is a service that delivers television programming to viewers by relaying it from a communications satellite orbiting the Earth directly to the viewer's location.

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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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Shortwave bands

Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper MF band and all of the HF band).

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Shortwave radio

Shortwave radio is radio transmission using shortwave radio frequencies.

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Spectrum management

Spectrum management is the process of regulating the use of radio frequencies to promote efficient use and gain a net social benefit.

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Spread spectrum

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g., an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth.

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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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Supreme Allied Commander Atlantic

The Supreme Allied Commander Atlantic (SACLANT) was one of two supreme commanders of the North Atlantic Treaty Organisation (NATO), the other being the Supreme Allied Commander Europe (SACEUR).

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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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Television

Television (TV) is a telecommunication medium used for transmitting moving images in monochrome (black and white), or in colour, and in two or three dimensions and sound.

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Television channel frequencies

The following tables show the frequencies assigned to broadcast television channels in various regions of the world, along with the ITU letter designator for the system used.

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Terahertz radiation

Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency (THF), T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the ITU-designated band of frequencies from 0.3 to 3 terahertz (THz; 1012 Hz).

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Terahertz time-domain spectroscopy

In physics, terahertz time-domain spectroscopy (THz-TDS) is a spectroscopic technique in which the properties of matter are probed with short pulses of terahertz radiation.

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The Post Office Electrical Engineers' Journal

The Post Office Electrical Engineers' Journal (POEEJ) was a quarterly technical journal published by the Institution of Post Office Electrical Engineers between 1908 and 1982.

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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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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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Trunking

In telecommunications, trunking is a method for a system to provide network access to many clients by sharing a set of lines or frequencies instead of providing them individually.

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TV-band device

TV band devices or TVBDs are unlicensed radio frequency devices operating in the vacant channels or white spaces between US television channels in the range of 54 to 698 MHz.

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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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U-NII

The Unlicensed National Information Infrastructure (U-NII) radio band is part of the radio frequency spectrum used by IEEE-802.11a devices and by many wireless ISPs.

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UBV photometric system

The UBV photometric system (Ultraviolet, Blue, Visual), also called the Johnson system (or Johnson-Morgan system), is a wide band photometric system for classifying stars according to their colors.

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UHF CB

UHF CB is a class-licensed citizen's band radio service authorised by the governments of Australia, New Zealand, Vanuatu, and Malaysia in the UHF 477 MHz band.

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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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Ultra low frequency

Ultra low frequency (ULF) is the ITU designation for the frequency range of electromagnetic waves between 300 hertz and 3 kilohertz.

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Ultra-wideband

Ultra-wideband (also known as UWB, ultra-wide band and ultraband) is a radio technology that can use a very low energy level for short-range, high-bandwidth communications over a large portion of the radio spectrum.

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V band

The V band ("vee-band") is a standard designation by the Institute of Electrical and Electronic Engineers (IEEE) for a band of frequencies in the microwave portion of the electromagnetic spectrum ranging from 40 to 75 gigahertz (GHz).

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Very high frequency

Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten to one meter.

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Very low frequency

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3 to 30 kilohertz (kHz), corresponding to wavelengths from 100 to 10 kilometers, respectively.

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W band

The W band of the microwave part of the electromagnetic spectrum ranges from 75 to 110 GHz, wavelength ≈2.7–4 mm.

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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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WARC bands

The WARC bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators.

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Wavelength

In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats.

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Weather radio

A weather radio is a specialized radio receiver that is designed to receive a public broadcast service, typically from government-owned radio stations, dedicated to airing weather reports on a continual basis, with the routine weather reports being interrupted by emergency weather reports whenever needed.

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Wi-Fi

Wi-Fi or WiFi is technology for radio wireless local area networking of devices based on the IEEE 802.11 standards.

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Wireless LAN

A wireless local area network (WLAN) is a wireless computer network that links two or more devices using wireless communication within a limited area such as a home, school, computer laboratory, or office building.

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World War II

World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.

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X band

The X band is the designation for a band of frequencies in the microwave radio region of the electromagnetic spectrum.

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Zigbee

Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection.

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2182 kHz

The radio frequency 2182 kHz is one of the international calling and distress frequencies for maritime radiocommunication in a frequency band allocated to the mobile service on primary basis, exclusively for distress and calling operations.

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500 kHz

The radio frequency of 500 kilohertz (500 kHz) has been an international calling and distress frequency for Morse code maritime communication since early in the 20th century.

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6-meter band

The 6-meter band is the lowest portion of the very high frequency (VHF) radio spectrum allocated to amateur radio use.

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Redirects here:

Band (electronics), Band (radio), Band frequency, Band of frequencies, Bands of frequencies, IEEE radio bands, ITU Radio Bands, ITU radio bands, NATO radio bands, Radio band, Unlicensed band, Wireless spectrum, Y band.

References

[1] https://en.wikipedia.org/wiki/Radio_spectrum

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