Matei,The bird was definitely in mode A when I worked it around 00:00 utc (10/12). It was in really good shape too, my SSB signal was booming back down on 10 meters off the transponder. There is a really chirpy CW beacon on 29.502 that is usually on when it is in mode A. I am wondering if that is what you heard. It sometimes sends some dits and sometimes is just stuck on in a constant carrier. I usually listen for it if I'm not sure what mode AO-7 is in.73,Will, KN6QVA On Thursday, October 12, 2023 at 04:17:59 AM PDT, Matei Conovici via AMSAT-BB amsat-bb@amsat.org wrote:
Hello,
I was listening on 29.500 USB during an AO-7 pass this morning hoping to maybe catch some telemetry (no VHF/UHF equipment here). Instead, I got this unkeyed carrier which lasted while the satellite was higher than 20 degrees or so, and it appears to have some Doppler. Could this be coming from AO-7? Is telemetry dead? This is the first time I'm trying to get at satellites, so bear with me please if I ask silly questions :)
Received on an IC-7300 w/ vertical antenna. It was faint but audible. Could not see anything on the waterfall on 29.400-29.500.
Spectrum in audacity showing a shift in frequency: https://imgur.com/a/oOa2HyI
Thank you for any hints, 73 de YO3GEK!
Matei Conovici
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The bird was definitely in mode A when I worked it around 00:00 utc (10/12).
My reception was abt 04:20 utc.
There is a really chirpy CW beacon on 29.502 that is usually on
when it is in mode A. I am wondering if that is what you heard. It sometimes sends some dits and sometimes is just stuck on in a constant carrier. I usually listen for it if I'm not sure what mode AO-7 is in.
No chirp, no dits as far as I can tell, just constant carrier with some (consistent with doppler) shift. I am more and more convinced that was it based on serveral replies, which is wonderful.
Thanks,
Matei Conovici
participants (2)
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Matei Conovici
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Will Ruef