[amsat-bb] CAS4A CAS4B SDR recordings?
godetj at wanadoo.fr
Fri Jun 16 19:03:30 UTC 2017
Douglas, if this can help, you will find here :
152 frames of the pass, orbit nr 17, this morning June 16th, starting at
0730 UTC, each frame 147 bytes (coded hexa).
On 16/06/2017 18:31, Jean-Pierre Godet wrote:
> 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.
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> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
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> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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