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.
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.
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 [email protected] 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 [email protected]
Sent via [email protected]. 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