[amsat-bb] Fox -1B / AO-91 in trouble?

skristof at etczone.com skristof at etczone.com
Tue Apr 30 17:20:28 UTC 2019


Nothing heard from AO-91 on pass over EM79 a few minutes ago. Sometimes
it's me, so if somebody else was able to transmit through the bird, go
with that. 

Steve AI9IN

On 2019-04-30 1:02 pm, Burns Fisher via AMSAT-BB wrote:

>> I cycled the power to the IHU and it popped right back the way it should
>> be.
>> Should be fine now, but reports for the next day or two will be
>> appreciated.
>> 
>> 73, Drew KO4MA
>> AMSAT VP Operations
>> 
>> -Looks much better all right.  If cycling the  IHU fixed it, that does imply
>> it was an IHU problem, although we could have guessed that the tx was ok,
>> since we were getting telemetry ok.  Since the IHU cycled ok, that implies
>> that it was not the program memory.  Given that we got telemetry in idle
>> and for a few seconds after the transponder went off, that means a lot of
>> stuff was ok.  I'm guessing that probably some bits got flipped in the data
>> for the software high pass filter, which would explain why there was trash
>> in what should have been the telemetry audio frequency band (below 200Hz).
>> 
>> 73,
>> 
>> Burns WB1FJ
>> AMSAT Fox Software
>> 
>> On Tue, Apr 30, 2019 at 12:17 PM Andrew Glasbrenner via AMSAT-BB <
>> amsat-bb at amsat.org> wrote:


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