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66 relations: Airband, AM broadcasting, Amateur radio, Amplitude modulation, Analog television, ATSC standards, Bandwidth (signal processing), CHU (radio station), Code-division multiple access, Compatible sideband transmission, Continuous wave, Digital television, Digital Terrestrial Multimedia Broadcast, DVB-T, FM broadcasting, Frequency, Frequency modulation, Frequency-division multiplexing, Frequency-shift keying, Giga-, Hertz, High frequency, Independent sideband, Innovation, Science and Economic Development Canada, International Telecommunication Union, ISDB, Kilo-, Land mobile service, Low frequency, Marine VHF radio, Medium frequency, Mega-, Modulated continuous wave, Modulation, Morse code, Multiplexing, National Oceanic and Atmospheric Administration, Non-directional beacon, NTSC, On-off keying, PAL, Phase modulation, PSK31, Pulse-amplitude modulation, Pulse-position modulation, Pulse-width modulation, Radio direction finder, Radio frequency, Radio Society of Great Britain, Radiofax, ..., Radioteletype, Reduced-carrier transmission, SECAM, Shortwave radio, Sideband, Single-sideband modulation, Telecommand, Telemetry, Telephony, Television, Time-division multiplexing, Very high frequency, Video, Weather radio, World Administrative Radio Conference, WWVB. Expand index (16 more) »
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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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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Amplitude modulation
Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting information via a radio carrier wave.
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Analog television
Analog television or analogue television is the original television technology that uses analog signals to transmit video and audio.
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ATSC standards
Advanced Television Systems Committee (ATSC) standards are a set of standards for digital television transmission over terrestrial, cable, and satellite networks.
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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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CHU (radio station)
CHU is the call sign of a shortwave time signal radio station operated by the Institute for National Measurement Standards of the National Research Council of Canada.
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Code-division multiple access
Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies.
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Compatible sideband transmission
A Compatible sideband transmission, also known as amplitude modulation equivalent (AME) or Single sideband-reduced carrier (SSB-RC), is a type of single sideband RF modulation in which the carrier is deliberately reinserted at a lower level after its normal suppression to permit reception by conventional AM receivers.
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Continuous wave
A continuous wave or continuous waveform (CW) is an electromagnetic wave of constant amplitude and frequency, almost always a sine wave, that for mathematical analysis is considered to be of infinite duration.
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Digital television
Digital television (DTV) is the transmission of television signals, including the sound channel, using digital encoding, in contrast to the earlier television technology, analog television, in which the video and audio are carried by analog signals.
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Digital Terrestrial Multimedia Broadcast
DTMB (Digital Terrestrial Multimedia Broadcast) is the TV standard for mobile and fixed terminals used in the People's Republic of China, Cuba, Hong Kong, and Macau.
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DVB-T
DVB-T is an abbreviation for "Digital Video Broadcasting — Terrestrial"; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in the UK in 1998.
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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 modulation
In telecommunications and signal processing, frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave.
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Frequency-division multiplexing
In telecommunications, frequency-division multiplexing (FDM) is a technique by which the total bandwidth available in a communication medium is divided into a series of non-overlapping frequency bands, each of which is used to carry a separate signal.
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Frequency-shift keying
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal.
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Giga-
Giga is a unit prefix in the metric system denoting a factor of a (short-form) billion (109 or 000).
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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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Independent sideband
Independent sideband (ISB) is an AM single sideband mode which is used with some AM radio transmissions.
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Innovation, Science and Economic Development Canada
Innovation, Science and Economic Development Canada (Innovation, Sciences et Développement économique Canada), or ISED, formerly Industry Canada, is the department of the Government of Canada with a mandate of fostering a growing, competitive, and knowledge-based Canadian economy.
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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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ISDB
The Integrated Services Digital Broadcasting (ISDB) (Japanese:, Tōgō dejitaru hōsō sābisu) is a Japanese standard for digital television (DTV) and digital radio used by the country's radio and television networks.
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Kilo-
Kilo is a decimal unit prefix in the metric system denoting multiplication by one thousand (103).
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Land mobile service
Land mobile service (short: LMS) is – in line to ITU Radio Regulations – a mobile service between base stations and land mobile stations, or between land mobile stations.
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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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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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Mega-
Mega is a unit prefix in metric systems of units denoting a factor of one million (106 or 000).
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Modulated continuous wave
Modulated continuous wave is defined by the Federal Communications Commission in 47 CFR §97.3(c)(4) as "Tone-modulated international Morse code telegraphy emissions having designators with A, C, D, F, G, H or R as the first symbol; 2 as the second symbol; A or B as the third symbol." See Types of radio emissions for a general explanation of these symbols.
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Modulation
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.
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Morse code
Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment.
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Multiplexing
In telecommunications and computer networks, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium.
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National Oceanic and Atmospheric Administration
The National Oceanic and Atmospheric Administration (NOAA; pronounced, like "Noah") is an American scientific agency within the United States Department of Commerce that focuses on the conditions of the oceans, major waterways, and the atmosphere.
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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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NTSC
NTSC, named after the National Television System Committee,National Television System Committee (1951–1953),, 17 v. illus., diagrs., tables.
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On-off keying
On-off keying (OOK) denotes the simplest form of amplitude-shift keying (ASK) modulation that represents digital data at the presence or absence of a carrier wave.
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PAL
Phase Alternating Line (PAL) is a color encoding system for analogue television used in broadcast television systems in most countries broadcasting at 625-line / 50 field (25 frame) per second (576i).
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Phase modulation
Phase modulation (PM) is a modulation pattern for conditioning communication signals for transmission.
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PSK31
PSK31 or "Phase Shift Keying, 31 Baud", also BPSK31 and QPSK31, is a popular computer-sound card-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-to-keyboard chat, most often using frequencies in the high frequency amateur radio bands (near-shortwave).
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Pulse-amplitude modulation
Pulse-amplitude modulation (PAM), is a form of signal modulation where the message information is encoded in the amplitude of a series of signal pulse.
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Pulse-position modulation
Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of 2^M possible required time shifts.
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Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal.
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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 frequency
Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.
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Radio Society of Great Britain
The Radio Society of Great Britain (RSGB), first founded in 1913 as the London Wireless Club, is the United Kingdom's recognised national society for amateur radio operators.
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Radiofax
Radiofax, also known as weatherfax (portmanteau word from the words "weather facsimile") and HF fax (due to its common use on shortwave radio), is an analogue mode for transmitting monochrome images.
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Radioteletype
Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link.
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Reduced-carrier transmission
Reduced-carrier transmission is an amplitude modulation (AM) transmission in which the carrier signal level is reduced to reduce wasted electrical power.
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SECAM
SECAM, also written SÉCAM (Séquentiel couleur à mémoire, French for "Sequential colour with memory"), is an analogue color television system first used in France.
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Shortwave radio
Shortwave radio is radio transmission using shortwave radio frequencies.
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Sideband
In radio communications, a sideband is a band of frequencies higher than or lower than the carrier frequency, containing power as a result of the modulation process.
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Single-sideband modulation
In radio communications, single-sideband modulation (SSB) or single-sideband suppressed-carrier modulation (SSB-SC) is a type of modulation, used to transmit information, such as an audio signal, by radio waves.
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Telecommand
A telecommand is a command sent to control a remote system or systems not directly connected (e.g. via wires) to the place from which the telecommand is sent.
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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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Telephony
Telephony is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties.
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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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Time-division multiplexing
Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.
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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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Video
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.
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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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World Administrative Radio Conference
The World Administrative Radio Conference (WARC) was a technical conference of the International Telecommunication Union (ITU) where delegates from member nations of the ITU met to revise or amend the entire international Radio Regulations pertaining to all telecommunication services throughout the world.
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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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Redirects here:
A3E, Class (emission), Emission types, F1B, F3e, J3E, R3e.
References
[1] https://en.wikipedia.org/wiki/Types_of_radio_emissions
