[amsat-bb] CAS4A CAS4B SDR recordings?

Jean-Pierre Godet godetj at wanadoo.fr
Fri Jun 16 18:31:05 UTC 2017

   Hi Douglas, all,

   On the next passes over the south of western Europe, tomorrow 
morning, I will record an i/q file and give you a link to download it 
(caution : 1 mn ==> 100 MB).

   Despite the fact that the two birds here never climbs very high above 
the horizon, maybe 30 deg., the signal is very strong and the 
demodulation of the 4800 bps GMSK telemetry very easy. During the pass, 
you doesn't lose a frame.
   Conditions : GPA + preamplifier in the attic, FCD-Pro+, Gqrx (SDR 
prgm), Gpredict (Doppler shift tracking), DireWolf 1200/2400/4800/9600 
bps FSK/GMSK demodulator).

   Have a nice evening, 73 !

   J-P F5YG

On 16/06/2017 16:30, Douglas Quagliana wrote:
> Does anyone have an SDR recording of CAS4A / CAS4B? I would like to try to demodulate and decode the 4800 baud telemetry signals and see what they say.
> Regards,
> Douglas
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list