Good morning all, I was monitoring 145.825 this morning and surprised to hear a data signal at a time when I was not expecting to hear anything. After a bit of research it turns out this was UO-11 ( I think ) FM 1K2 AFSK telemetry Strong signal at FN25ig (near Ottawa Canada) AOS, at least when I first heard the signal, approximately 2020-06-12 12:33UTC and LOS 12:38 UTC. I think I am going to monitor a few passes and see if I can decode some of the telemetry. cheers, Graham ve3gt
I went through some SatNogs observations for UO-11 that had positive decodes, and 100% of the ones I looked at had either false positives due to the ISS digipeater RF-Bombing the pass, or they just had gibberish decodes of noise. There are also a few observations that seem to have very noticeable signals - but no decodes.
Please do let us know how it goes.
--Roy K3RLD
I used to decode the telemetry from UO-9 and UO-11 for many years. As far as I know, right now, the info is meaningless. It is not real data. I assume the sensors no longer work. Rick WB3CSY
On Fri, Jun 12, 2020 at 9:44 AM Roy Dean via AMSAT-BB amsat-bb@amsat.org wrote:
Good morning all, I was monitoring 145.825 this morning and surprised to hear a data signal at a time when I was not expecting to hear anything. After a bit of research it turns out this was UO-11 ( I think ) FM 1K2 AFSK telemetry Strong signal at FN25ig (near Ottawa Canada) AOS, at least when I first heard the signal, approximately 2020-06-12 12:33UTC and LOS 12:38 UTC. I think I am going to monitor a few passes and see if I can decode some of the telemetry. cheers, Graham ve3gt
I went through some SatNogs observations for UO-11 that had positive decodes, and 100% of the ones I looked at had either false positives due to the ISS digipeater RF-Bombing the pass, or they just had gibberish decodes of noise. There are also a few observations that seem to have very noticeable signals - but no decodes.
Please do let us know how it goes.
--Roy K3RLD _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (2)
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Rick Walter -
Roy Dean