[amsat-bb] CAS4A CAS4B SDR recordings?
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 !
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.
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