call sign

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call sign

[′kȯl ‚sīn]

Call Sign


a set of characters (code symbols, letters, or numbers) or an audible signal (word, musical phrase, bird call) that serves as the distinctive sign of a radio station—usually for the purpose of identification of the station during reception. As a rule, it is transmitted at the beginning of each period of the station’s operation.

The set of symbols in a call sign identifies the station’s national affiliation. The initial characters are established by the International Radio Regulations. The USSR, for example, uses in this position the letters U and R and such combinations as 4J, 4K, and 4L. The complete structure of a call sign depends on the class (purpose) of a station and differs for broadcasting, official, and amateur radio stations. Call signs for amateur radio stations have a complicated makeup and contain the most information. They often indicate through a code the station’s operating wave band (shortwave or ultrashortwave), the station’s group (a collective or individual station) and site (in the USSR—the Union republic, oblast, and amateur-radio region), and the individual letter symbol or registration number of the station.


call sign

Any combination of characters or pronounceable words used primarily for establishing and maintaining communications. It identifies a communication facility, a command, an authority, an activity, or a unit. A call sign should have at least two syllables (e.g., Red 1, Pan Am 550).
References in periodicals archive ?
According to Foreman's letter, callsigns are usually affixed to the cover of a binder that rides on the helicopter's dashboard; and Foreman took it upon himself to design the logo in which he incorporates the brand's signature Wedge and Ramp Combo.
I made one for each of our different callsigns (Liberator 20-29), and many of the other pilots asked to use my coversheets when they went on missions.
13, 2011 /PRNewswire/ -- Luxury erotic furniture designer Liberator recently received a package containing a letter, photographs and mementos from the C Company, 3-4 Assault Helicopter Battalion - the Warriors - who flew under the callsign "Liberator" during a yearlong deployment to Afghanistan.
Bypassing the area with the trailer of food and water, they continued to walk around the outside of the perimeter wire until challenged by callsign 69.
On 30 December 1941, the Russians provided the British with complete details of the Japanese naval communications network, as at October 1941, and informed them that all warship callsigns had been changed.
including site names, callsigns, latitude, longitude, status,
Separate excel spreadsheets provide critical data for complete analysis of frequency and coverage data on each incumbent licensee as well as callsigns, contact information and technical information.
Separate excel spreadsheets provide critical data for complete analysis of frequency and coverage data on each incumbent licensee as well as demographics, callsigns, contact information and technical information.