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Call signs in the United States. Call signs in the United States are identifiers assigned to radio and television stations, which are issued by the Federal Communications Commission (FCC) and, in the case of most government stations, the National Telecommunications and Information Administration (NTIA). They consist of from 3 to 9 letters and ...
Spanish broadcasters used call signs consisting of E followed by two letters and up to three digits until the late 1970s. Portugal had a similar system, their callsigns beginning with C; these also ceased to be used in the 1970s. Britain has no call signs in the American sense, but allows broadcast stations to choose their own trade mark call ...
Call signs are allocated to ham radio stations in Barbados, Canada, Mexico and the United States. Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The call sign format for radio and television call signs follows a number of conventions. All call signs begin with a prefix assigned ...
The call signs are used to legally identify the station or operator, with some countries requiring the station call sign to always be used and others allowing the operator call sign instead. [ 1 ] The International Telecommunication Union (ITU) allocates call sign prefixes for radio and television stations of all types.
Broadcast call signs. Broadcast call signs are call signs assigned as unique identifiers to radio stations and television stations. While broadcast radio stations will often brand themselves with plain-text names, identities such as " cool FM ", " rock 105" or "the ABC network" are not globally unique. Another station in another city or country ...
As of June 20, 2023, there are a total of 102 AM, FM and TV stations in the United States that are assigned three-letter call signs. This is divided between only 67 different three-letter calls, because in many cases the same call sign is used by more than one station, although a given call sign is never assigned to more than one AM, FM or TV ...
Makaton – a system of signed communication used by and with people who have speech, language or learning difficulties. Mofu-Gudur Sign Language. Monastic sign language. Signalong – international sign assisted communication techniques used to support children and adults with communication or learning difficulties.
Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...