sabato 28 ottobre 2017

TADIRAN AutoCall

Looking in my archive i found this interesting system. AutoCall is a proprietary function of the Tadiran HF-6000 radio systems.


The signal is composed of two parts: a single tone followed by an MFSK-4.


Symbol rate: 125 Bd


MFSK modulation : 4 tones, shift 300 hz



Bitstream after demod ( 2 bits / symbol ).

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