FSK Br 100, Sh 2000

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I-56578
Mensajes: 27
Registrado: 06 May 2015 19:28

FSK Br 100, Sh 2000

Mensaje por I-56578 » 19 May 2015 12:54

Hola,
unid FSK 100/2000 system heard this morning (19 May) on 12129.5 cf starting from 0640, s/off at 0650. It sounds like an ARQ system, possibly from Russian Military. As far as I know, it seems that the signal is sent by an outstation to its main 'home' station, that in its turn operates in CIS 3x100 (VFT 3 x FSK-2 channels) on three correspondents. All these stations (main and oustations) operate in synchronous mode, usually not far apart in frequency.
Is there a name for that FSK system?

The recordered signal can be downloaded from here:
https://www.dropbox.com/s/wmkqgaw5s5ew7 ... z.wav?dl=0

ciao,
Antonio

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Rapidbit
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Registrado: 03 Nov 2014 23:22

Re: FSK Br 100, Sh 2000

Mensaje por Rapidbit » 19 May 2015 15:57

Hi, I tried demodulation with K500 but no success. I try more options.
The beginning seems manual handling.
Greetings
EA4GPX, EA4022SWL, AMSAT-EA 423.

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