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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.
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.
United States amateur radio call signs consist of one or two letters, followed by a single digit, and closing with one to three more letters. [20] The number in the call sign indicates in which of the ten U.S. radio districts the license was issued.
QRZ.com is an amateur radio website listing almost every callsign in the world. In 1992, QRZ founder Fred L. Lloyd accessed data from the FCC database to create a CD-ROM with all call signs issued in the United States. [1] A copy of the CD-ROM is carried on board the International Space Station and one was also aboard the Russian Mir space station.
For instance, a newly licensed Technician from New England would receive a call sign of the form KC1xxx. The amateur may thereafter apply for a specific or specialized call sign under the Vanity Licensing program. Approximately 88% of all amateur radio operators have call signs that reflect the district in which those operators live. [25]
Pages in category "Amateur radio call signs" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. ...
A call sign can be any number of letters and numerals but each country must only use call signs that begin with the characters allocated for use in that country. With regard to the second and/or third letters in the prefixes in the list below, if the country in question is allocated all callsigns with A to Z in that position, then that country ...
Special event call signs are issued with a 'GB' prefix, but others like GQ, GO, GR, MQ, GA, MO, and 2O have been issued in special cases. Ofcom also allows numerals in special event call sign suffixes. For instance GB75RD was a special event sign for the 75th anniversary of the Reading and District Amateur radio club. [13]