Thank you for reporting this, Daniel. This could either have been a processor reset for some reason, or simply the hang timer on the transponder timing out not having detected a 67Hz tone in a couple minutes. Either one would seem pretty similar. Neither one is cause for concern if it came back up.
Processor resets are not unexpected. In fact they are less common than expected. They are usually caused by radiation of various sorts in space (low energy protons etc) temporarily messing up the processor. A reset and/or a power cycle as so far always sufficed to fix the problem.
I just checked the latest telemetry we have on the server, and there are not yet any reports of a processor reset, but right now, AO-85 is over the South Pacific. A close-to-overhead pass coming up soon.
Thanks again and 73,
Burns W2BFJ Fox-1 Flight Software
P.S.: Everyone who reads this in North, Central, and northern South America: Just a reminder: Please remember that we are testing the satellite today. Please collect telemetry (if any) and listen but don't transmit. In Europe, Asia, Oceana, etc etc...feel free to use the transponder and report what it sounds like if we manage to shift to carrier operated mode.
On Sun, Nov 8, 2015 at 9:37 AM, Daniel Estévez daniel@destevez.net wrote:
Hi all,
An unusual thing happened during AO-85 last pass over Europe, at about 14:20 UTC or so. The transponder stopped working and the satellite went silent for about a minute. Then came the voice announcement in the lines of "Hi! This is radio amateur satellite Fox 1", and some seconds later the transponder started working again. I'm sorry that I have no telemetry recording of the pass to try to see what happened.
73,
Dani M0HXM/EA4GPZ. _______________________________________________ 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: http://www.amsat.org/mailman/listinfo/amsat-bb