Unid FSK 400Bd (401)/800 bursts spotted on 13224.0 Khz (cf + 1700), slight distorsion in the speed. ACF=0, no other results if demodulated using differential mode. Transmissions are not frequent and most often consist of a single burst, sometimes two (maybe two stations).
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| Fig. 1 |
Quoting my friend KarapuZ "Despite the good recording quality and SNR ratio, in my opinion, the transmitter modulator malfunctions in the frequency discriminator. As a result, we have a bitstream with many errors at the output".
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| Fig. 2 (thanks to KarapuZ) |