[amsat-bb] JY1-sat dashboard

Sat Dec 8 16:46:03 UTC 2018

There is something not quite right with JY1 Dashboard software. If set
exactly like Funcube -1 and NAYAF-1...it performs completely differently in
terms of AutoTune. Even when on the wrong satellite, Both FC-1 and NAYAF-1
achieve a lock to the incoming signal., while JY1 Dashboard hunts and
hunts. It eventually gets there, but it takes many seconds to get a lock on
the very same signal that lock up the other two softwares immediately.

*All 3 programs are fed with the same audio source at the same time, on the
same antenna. All 3 programs are on the same computer. Only the JY1 program
is misbehaving.*

JY1 Dashboard
Ver: 1.0.1178.1
Rev Date: 2018-11-28 21:30:22

Something is clearly wrong with this software.
Hasan

On Sat, Dec 8, 2018 at 10:16 AM Hasan al-Basri <hbasri.schiers6 at gmail.com>
wrote:

> I noticed JY1SAT Dashboard is not decoding as easily as the others ...by
> that I mean freq tracking. This morning I lost a bunch of frames because
> the doppler is not tracking perfectly yet. Even though I was set to
> autotune from 0 to 7500 Hz, as the sat freq leaked down (tones became
> lower), I lost lock. When they leaked up, later in the pass, lock was not
> lost.
>
> Neither NAYAF-1 nor, FC-1 Dashboards behave that way.
>
> BTW, the signals from JO-97 were a LOT stronger this morning. LOS was
> about 5 seconds early.
>
> 73, N0AN
> Hasan
>
>
> On Fri, Dec 7, 2018 at 6:17 PM Kevin <wa7fwf at gmail.com> wrote:
>
>> Hi Hasan,
>>     I first noticed this on my original lash up of
>> airspy>sdr#>vbcable>dashboard and I was manually tuning and as doppler
>> marched the signal through the passband  I learned that moving it back
>> up too quickly would lose lock and seemed to have trouble re-locking, so
>> I ignored this as being on my end and manual tuning.
>>    I now have it running on a funcube dongle and still see it, I'm still
>> getting a feel for the real downlink and doppler swings so my range may
>> be set a little wide, I will try closing it in and see if that helps.
>>
>> Thanks
>> Kevin
>>
>>
>>
>> On 12/7/2018 12:44 PM, Hasan al-Basri wrote:
>> > Hi Kevin,
>> > I did a TLM run with JY1SAT about 90 min ago and left the decoder
>> running
>> > (as I do with all my TLM programs)
>> > AOS in about 9 minutes here, and assuming the TLM is on, I'll let you
>> know
>> > if JY1 Dashboard takes off or not.
>> >
>> > 17:19z , JY1SAT came right up, and it Dashboard is locked and decoding
>> > fine. I have about 11 frames and am at 9 deg EL.
>> >
>> > Just for comparison purposes, I have my AutoTune range enabled, and set
>> for
>> > 0 and 3500
>> > 73, N0AN
>> >
>> > Also, the signal has been considerably weaker and with a lot more QSB
>> than
>> > I see on either AO-73 or EO-88. I'm seeing a LOT of polarization fading
>> as
>> > I switch back and forth between a RHC Eggbeater and an X200 Colllnear.
>> Even
>> > at 40 deg EL, seeing polarization fading on the RHC EB.
>> >
>> > Also noted, doppler tracking is not as "perfect" as it i s on AO-73 and
>> > EO-88. I assume this is due to some slight error in the TLE's
>> >
>> > I also just adjusted my tracking Auto-Tune high end to 6000, as it lost
>> > some decodes with the high end set to 3500
>> >
>> > Hasan
>> >
>> >
>> > On Fri, Dec 7, 2018 at 9:39 AM christy hunter <cchunter3 at mindspring.com
>> >
>> > wrote:
>> >
>> >> Kevin,
>> >>
>> >> Yes,  I was also running simultaneously the telem software latest
>> version.
>> >>
>> >> 73 Christy KB6LTY
>> >>
>> >>
>> >>
>> >> *Kevin* wa7fwf at gmail.com
>> >> <mailto:amsat-bb%40amsat.org
>> >>
>> ?Subject=Re%3A%20%5Bamsat-bb%5D%20JY1-sat%20dashboard&In-Reply-To=%3Ce3eb2ee8-a2ef-097a-c556-1ff77b689b2f%
>> >> 40gmail.com%3E>
>> >> /Fri Dec 7 07:41:06 UTC 2018/
>> >>
>> >>    * Previous message: [amsat-bb] Rocket Lab Launch for NASA ElaNa-19
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>> >>      next week
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>> >>
>> >>
>> >>
>> ------------------------------------------------------------------------
>> >>
>> >> Hi All,
>> >>       Is anyone else noticing any  issues with the JY1-sat dashboard? I
>> >> can start it with the sat present and it will instantly lock and track,
>> >> next pass it will ignore the signal, kill it and restart it and bam
>> >> instant lock.
>> >>
>> >>     73 Kevin WA7FWF
>> >>
>> >>
>> ------------------------------------------------------------------------
>> >>
>> >>
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>> > _______________________________________________
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>>
>> _______________________________________________
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