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

skristof at etczone.com skristof at etczone.com
Tue Apr 30 17:29:48 UTC 2019


I warned you it might be me. For some reason I used the time for the
pass coming up on Friday. Maybe I need a nap. 

Steve AI9IN

On 2019-04-30 1:25 pm, Paul Stoetzer wrote:

> What time did you have for the pass?  
> 
> The last pass started around 12:13 pm EDT. Next pass is around 1:48 pm. 
> 
> 73, 
> 
> Paul, N8HM 
> 
> On Tue, Apr 30, 2019 at 1:20 PM AI9IN via AMSAT-BB <amsat-bb at amsat.org> wrote: 
> 
>> 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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