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call-sign ['kɔ:l,saɪn]
telegr.	señal de identificación
call sign
commun.	indicativo de llamada; distintivo de llamada; indicativo de llamada de radio; señal indicativa de llamada
comp., MS	señal de identificación (The identifying code letters or numbers of a radio or television transmitting station, assigned by a regulatory body)
radio	contraseña f; señal de llamada
telecom.	indicativo n
English thesaurus
call sign
mil., logist.	Any combination of characters or pronounceable words, which identifies one or more communication facility, a command, an authority, an organization, or a unit; used primarily for establishing and maintaining communications. (FRA)
USA	Any combination of characters or pronounceable words, which identifies a communication facility, a command, an authority, an activity, or a unit; used primarily for establishing and maintaining communications (JP 3-50)

call-sign: 13 phrases in 5 subjects

Communications	8
Fishery fishing industry	2
General	1
Police	1
Technology	1