Identification, friend or foe IFF installation

摘要: In an installation for identification friend or foe, coded interrogations and replies of interrogation the interrogating station a transponder interrogated are transmitted in utilizing radiotelephony installation. The transmission reply (identification) proceeds according to frequency jumping procedure via consists known encoded code word variable data part which contains (or comprises) address. making available offering) transmit frequencies by means synthesizer controlled operated) is, certain circumstances, repeated on several, successively frequencies.