[amsat-bb] JY1-sat dashboard

[Kevin]

Last pass I sat and watched the signal peak and the tuning bar sat still 
near the low end ignoring it so I manually dragged it to the center of 
the signal where it fluttered trying to go back to where it had been and 
refused to lock, I then grabbed the lower limit and pulled it over to 
the signal and the tuning bar moved with it and finally locked, I put 
the lower edge back to where it had been and and it stayed locked on the 
signal for the duration of the pass.

FWIW

kevin

On 12/8/2018 9:44 AM, Hasan al-Basri wrote:
> OK, pass of JY1SAT at 17:24z
>
> AOS 9 sec early, LOS 9 sec late.
>
> Doppler Tracking:
> Sat moves down in frq on approach. lock lost earlier as it drifts down,
> than lock lost as it drifts up.
>
> Had to correct freq 4 times as it drifted down, 2 times as it drifted up.
>
> Best Guess:
>
> The other two software packages "seem" to handle freq errors better...only
> because their KEPs are really good and therefore the doppler is dead on.
>
> In other words, JY1SAT (JO-97) cannot capture TLM unattneded without
> signficant frame loss, until the keps get better.
>
> My earlier assessment is most likley wrong...there isn't anything wrong
> with JY1SAT Dashboard.
> 73, N0AN
> Hasan
>
>
> On Sat, Dec 8, 2018 at 11:06 AM JoAnne K9JKM <joanne.k9jkm at gmail.com> wrote:
>
>>>> There is something not quite right with JY1 Dashboard software.
>> I don't know if the problem is related to the JY1SAT testing and
>> commissioning procedures. Here is an excerpt about JY1SAT status the
>> FUNcube
>> operations list forwarded for the ANS bulletins (coming out later this
>> weekend):
>>
>> "Commissioning of the spacecraft [JY1SAT] is continuing and there
>> will be some periods when the telemetry being transmitted is not valid.
>> This will show up with invalid data collection flags in the dashboard."
>>
>> Caveat - I don't run the JY1SAT dashboard here so I'm unable to comment
>> further.
>>
>> --
>> 73 de JoAnne K9JKM
>> k9jkm at amsat.org
>>
>>
>>
>>
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