David
https://svn.sarpeidon.net/viewvc/suitsat2/ground_station_software/ARISSatTLM /install-staging/Sample_ARISSat_Recording1.WAV?revision=3003
this is a test WAV file, and my install of ARISSatTLM is able to decode this. 9.6MB, 1:45 minutes.
would be useful to place this on www.arissattlm.org
Henk, PA3GUO
Hi Henk.
I've had some issues with decoding BPSK too. Worked fine on the first day, then unable to decode anything. Eventually I reloaded the software and played a wav file through the system. Finally it began decoding again. I don't really know what the problem was. It still will not send tlm via the internet and I can't get sound out...Hence the wav files.
Problem is the wav file I have is large so I cant send it to you to try. Perhaps some one has 30 seconds worth that does decode, then we can use that as a standard to check our systems.
I've been tracking doppler by hand. Seems to work OK but it's very important to keep the CW in the 'blue' window. I would think jumps would not be good. Perhaps frequent doppler updates. - So very small jumps.
I also heard HB9 last night on the transponder, but in low power mode (45 sec)that is difficult. - I'll wait for some daylight passes.
Good luck
David G0MRF
-----Original Message----- From: PA3GUO [email protected] To: amsat-bb [email protected] Sent: Mon, 8 Aug 2011 10:41 Subject: [amsat-bb] ARISSat TLM decoding using FCD Just sharing the results of my recordings of last night: (using the FCD + HDSDR)
- FM voice works fine
- Xponder works fine (HB9AOB was very clear)
- CW decoding works fine (the Tuning indicator locks on the CW bump)
- BPSK decoding did not work (I hear & see the signal, but no decode)
Is the BPSK decoding very sensitive to doppler / freq hops ?
Henk, PA3GUO
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