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 ?
25% included in a draft program proposal for 2018 posted in February, according to a 2018 call letter summary sheet.
According to a notification issued here Monday, call letters are being issued to all the candidates on their postal addresses.
091-9213563/9212897/9214131 or through personal visit in case they do not received the call letter up till February 24 for receiving duplicate call letter.
Those students who have not received the call letter upto October 22 are advised to contact the nearest Regional Office of the university or the Department of COL MBA/MPA Programme Room No.
However, if any candidate does not receive call letter, he/she should call on phone numbers: 9213563, 9212897, and 9214131 (extension number 1088) or visit personally the office of Public Service Commission, 2-Fort road Peshawar Cantt for the purpose.
The Silver Potion Price Ruling 30 Days Prior As Per Inspection Call Letter Will Be Considered For Computing The Pvc.
Those candidates who have not received the call letter upto April 20, are hereby advise to contact the nearest regional office of the university.
According to a hand-out issued here Wednesday said that Khyber Pakhtunkhwa Public Service Commission will not send call letters for Physical Tests through postal service.
Call letters have been issued to all concerned candidates on their postal addresses.
The radio stations are organized by state, call letters, and frequency with Canadian stations receiving their own section.