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It refers to a list of saltwater islands worldwide maintained by the Radio Society of Great Britain, which assigns a unique code to an island or group of islands, like EU-005 for Great Britain, OC-001 for Australia etc. [36] [37] IOTA codes are not part of the callsign, although some callsign blocks correspond uniquely to an IOTA code, like EA6 ...
Generally the shorter the call (up to a 1x2 or 2x1 format) the higher the grade of license, but amateurs who upgrade are not required to change their call signs. In any case some of the available blocks have been used up. The 1x1 call signs, such as K6O, are for short-term special event stations.
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The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [ 1 ] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.
Download QR code; Print/export ... Amateur radio call signs (5 P) M. Maritime call sign (39 P) Pages in category "Call signs"
Amateur Radio Callsigns in the United States Class Size Format Letters Example Group A Amateur Extra Class Four characters 1-by-2 K, N, or W plus two letters W1AW: 2-by-1 AA–AK, KA–KZ, NA–NZ, or WA–WZ plus one letter ABØC: Five characters 2-by-2 AA–AK plus two letters ADØEC: Group B Advanced Class [26] Five characters 2-by-2
Amateur radio or ham radio call signs are unique identifiers for the 19,500 licensed operators in Australia. Call signs are regulated internationally by the ITU as well as nationally by the Australian Communications and Media Authority (ACMA) which is Australia's regulator for broadcasting, administering spectrum use through the provisions of ...
Russian nuclear icebreaker Arktika with call sign UKTY. Merchant and naval vessels are assigned call signs by their national licensing authorities. In the case of states such as Liberia or Panama, which are flags of convenience for ship registration, call signs for larger vessels consist of the national prefix plus three letters (for example, 3LXY, and sometimes followed by a number, e.g. 3LXY2).