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| call sign (The identifying code letters or numbers of a radio or television transmitting station, assigned by a regulatory body) | |||
| identification sign | |||
| answer-back code; call-sign | |||
| identification signal | |||
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senal de identificacion : 15 phrases, 6 sujets |
| Communications | 2 |
| Électronique | 7 |
| Radio | 1 |
| Radiolocalisation | 1 |
| Transport | 3 |
| Transport ferroviaire | 1 |