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An amateur operator's call sign is composed of a prefix, a separating numeral and a suffix. The prefix can be composed of letters or numbers, the separating numeral is between 0 and 9, and a suffix is from one to four characters, usually letters. [ 5 ] Examples of call signs and their constituent parts are as follows:
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 ...
The call sign format for radio and television call signs follows a number of conventions. All call signs begin with a prefix assigned by the International Telecommunication Union (ITU). For example, the United States has been assigned the following prefixes: AAA–ALZ, K, N, W. For a complete list, see international call sign allocations.
In broadcasting and radio communications, a call sign (also known as a call name or call letters —and historically as a call signal —or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assigned by a government agency, informally adopted by individuals or organizations, or even ...
Military call sign. Military call signs are call signs (or callsigns) or specialized form of nickname assigned as unique identifiers to military communications. In wartime, monitoring an adversary's communications can be a valuable form of intelligence. Consistent call signs can aid in this monitoring, so in wartime, military units often employ ...
The call sign was appended to British Airways' normal radio call sign, e.g. "Speedbird-Concorde One". [8] Air France, the only other airline to operate the Concorde commercially, did not use the "Concorde" call sign at all in normal service; its Concorde flights simply used the standard Airfrans call sign. [citation needed]
The FCC in the U.S. discontinued its fee for vanity call sign applications in September 2015. [55] Call sign structure as prescribed by the ITU consists of three parts which break down as follows, using the call sign ZS1NAT as an example: ZS – Shows the country from which the call sign originates and may also indicate the license class. (This ...
Call signs in United Kingdom include a three letter country code, and a series of letters and numbers. [1][2][3] Call signs are regulated internationally by the ITU as well as nationally in the UK by the Office of Communications (Ofcom). [4] It regulates amateur radio in the country as an independent regulator and competition authority for the ...