[amsat-bb] DELFI-C3 and SEEDS over West Malaysia
Sion Chow Q. C. (9W2QC)
9w2qc at 9w2qc.net
Sun May 4 01:02:28 PDT 2008
This morning I was very happy to have copied very great and interesting
signals from both DELFI-C3 and SEEDS. Pass details are as below:
Time: 1035 Local or 0235 UTC
Date: 04 May 2008
Max Elevation: 76 degrees
Tracking: Object E
The first half of the pass was used to track Delfi-C3 with 180 packet frames
decoded. Just after TCA, Delfi-C3 stopped TX suddenly and appeared briefly
again shortly. Can anyone explain this phenomenon?
After that it was no longer heard even on 145.870 MHz +/- so I QSYed to
SEEDS. To my surprise, SEEDS was in Digitalker mode. Also manage to decode
3 SSTV pictures (they are the same). Below are some interesting
screenshot, images and recordings.
RASCAL decoding Delfi-C3 telemetry ->
RAW Delfi-C3 frames -> http://www.9w2qc.net/amsatbb/delfi04may1035.txt
SEEDS SSTV #1 -> http://www.9w2qc.net/amsatbb/seed04may1035-1.jpg
SEEDS SSTV #2 -> http://www.9w2qc.net/amsatbb/seed04may1035-2.jpg
SEEDS SSTV #3 -> http://www.9w2qc.net/amsatbb/seed04may1035-3.jpg
For those who like to hear how Delfi-C3 sounded,
I understand that SEEDS's digitalker contains a secret message that has to
be copied for those intending to collect their special QSL card. Therefore
I will not publish the full recording but only a fraction of it. This is
just the English ID portion.
http://www.9w2qc.net/amsatbb/seeds04may1035.mp3 If the command team will
like a full recording, I am more then pleased to provide one.
It is truly amazing how well 0.485 Watts signals of SEEDS on 70 CM
travelling some 1500 KM is picked up on earth.
Antenna: 2M - 2x10 element Hor Yagi & 70CM - 2x15 Hor Yagi
Preamp: SSB SP-2000 & SSB SP-7000
Sion Chow Q. C.,
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