This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Types of radio emissions" – news · newspapers · books · scholar · JSTOR(August 2014) (Learn how and when to remove this message)
The International Telecommunication Union uses an internationally agreed system for classifying radio frequency signals. Each type of radio emission is classified according to its bandwidth, method of modulation, nature of the modulating signal, and type of information transmitted on the carrier signal. It is based on characteristics of the signal, not on the transmitter used.
An emission designation is of the form BBBB 123 45, where BBBB is the bandwidth of the signal, 1 is a letter indicating the type of modulation used of the main carrier (not including any subcarriers which is why FM stereo is F8E and not D8E), 2 is a digit representing the type of modulating signal again of the main carrier, 3 is a letter corresponding to the type of information transmitted, 4 is a letter indicating the practical details of the transmitted information, and 5 is a letter that represents the method of multiplexing. The 4 and 5 fields are optional.
This designation system was agreed at the 1979 World Administrative Radio Conference (WARC 79), and gave rise to the Radio Regulations that came into force on 1 January 1982. A similar designation system had been in use under prior Radio Regulations.
and 26 Related for: Types of radio emissions information
classifying radio frequency signals. Each typeofradioemission is classified according to its bandwidth, method of modulation, nature of the modulating...
respectively. The Sun produces radioemissions through four known mechanisms, each of which operates primarily by converting the energy of moving electrons into...
broadcasting FM broadcasting Dead air Internet radio Radio network Music radio Old-time radioRadio astronomy Radio programming Typesofradioemissions...
method for transmitting continuous wave information over other typesofradioemissions Mountain Cold Weather, mountain warfare training at Norwich University...
assigned channel is an example of a spurious emission. Spurious emissions can include harmonic emissions, intermodulation products and frequency conversion...
through amplification by stimulated emission. The term is an acronym for microwave amplification by stimulated emissionof radiation. First suggested by Joseph...
sphere Typesofradioemissions Airband DSB-SC "Father Landell de Moura : Radio Broadcasting Pioneer : FABIO S. FLOSI : UNICAMP – University of Campinas...
Jupiter's magnetic field was first inferred from observations ofradioemissions at the end of the 1950s and was directly observed by the Pioneer 10 spacecraft...
Maritime broadcast communications net Navtex Typesofradioemissions "Rec. ITU-R V.431-7, Nomenclature of the frequency and wavelength bands used in telecommunications"...
waves) Radio propagation Receiver (radio) Transmitter Typesofradioemissions Antenna matching unit Batteryless radio Digital radio Preselector Radio frequency...
signals. Each Typeofradioemission is classified according to its bandwidth, method of modulation, nature of the modulating signal, and Typeof information...
This article is a list of locations and entities by greenhouse gas emissions, i.e. the greenhouse gas emissions from companies, activities, and countries...
Stellar radio sources, radio source stars or radio stars are stellar objects that produce copious emissionsof various radio frequencies, whether constant...
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz)...
code Typesofradioemissions On–off keying An MCW Keyer for V/UHR FM (N. Wilford, W1TLZ), QST April 2013, pp. 37-38 PicoKeyer-Plus Kit U. S. Code of Federal...
diathermy machines. The powerful emissionsof these devices can create electromagnetic interference and disrupt radio communication using the same frequency...
An astronomical radio source is an object in outer space that emits strong radio waves. Radioemission comes from a wide variety of sources. Such objects...
detecting Type II and III civilizations. A Type I civilization like that of earth would be able to receive the extraordinary energetic emissionsof the other...
messaging Typesofradioemissions UART ACARS, used by commercial aviation – packet based CLOVER2000 developed by HAL company, USA, for Radio Amateur application...
Radio waves are a typeof electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically...
frequency limit of the LISN also plays an important role when conducted emissions measurements are used for predicting radiated emissions problems. A 100 MHz...
A radio galaxy is a galaxy with giant regions ofradioemission extending well beyond its visible structure. These energetic radio lobes are powered by...
unwanted emissions and the countermeasures which may be taken in order to reduce unwanted emissions. The second class, susceptibility, is the tendency of electrical...
Letter beacons are radio transmissions of uncertain origin and unknown purpose, consisting of only a single repeating Morse code letter. They have been...
Global Information