call sign

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call sign

[′kȯl ‚sīn]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

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).
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The call signal will be available from August 10 to 24 to commemorate the club's anniversary, Bahrain's Daily Tribune (DT) reported.
On the other hand, shutdown of the watchdog device happens in case of receipt of call signals from ATX.
December 26: Mars Odysseyfails again to pick up Beagle 2's call signal and the radio telescope also has no luck detecting anything after operating for most of the night.
When pressure is no longer being applied to the pad, the control unit activates call signal at the nursing station or sounds an in-room alarm.
A TELEPHONE call signal led the start of a 24 hour-a-day nightmare for young mum Joanne Hobday.
Fighter Pilot - Ferrell is a pilot in this one, and they all have to introduce themselves with their call signals. Ferrell's call signal is "Clown Penis." "When an enemy sees me on his tail, I want him to feel the same way that you'd feel if a clown showed you his penis," he explains.
Anyone with an amateur radio can connect to the Herbert museum transmission using the call signal GB4H.
CLOSE CALL Signal to pal from Florence CHEQUERED FLAG (the race is over) BLUE FLAG (driver is about to be lapped) GREEN FLAG (driver clear of potential danger) YELLOW FLAG (indicates danger ahead)
Go the extra mile and call Signal Branch at HRC to ensure a trained Soldier is requisitioned who will be there in time to allow for an orderly transfer of the custodian duties.