call sign

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call sign

[′kȯl ‚sīn]
(communications)

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.

I. V. KAZANSKII

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 ?
The system responds to incoming call signals, such as alert signals, from the transceiver and rings the telephone accordingly.
The AD8368 is optimized to maintain dynamic range of base station radio transceivers, ensuring that both weak and strong incoming call signals are effectively handled and maintained.
The ground radio stations direct call signals received from the aircraft to the public telephone network.
CommuniGate Pro automatically provides registry services for millions of VoIP users, SIP proxy services for thousands of call signals per second, and extensive near-end and far-end NAT traversal services previously only provided through complex architectures or expensive hardware solutions.
CommuniGate Pro automatically provides registry services for millions of VoIP users, SIP proxy services for thousands of call signals per second, and extensive "near-end" and "far-end" NAT traversal services only provided previously through complex architectures or expensive hardware solutions.
Previously, Telit Globalstar phones in stand-by mode continuously scanned for incoming call signals, rapidly draining battery power.
Using simple handsets or fixed phones, which operate much like conventional cellular or wireline phones, Globalstar call signals are received by a constellation of low-earth-orbiting satellites which cover virtually every populated area on earth, routing calls back to Globalstar gateways, into the terrestrial phone network and on to their destinations.