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
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/
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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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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@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/
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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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"Also, the signal has been considerably weaker and with a lot more QSB than I see on either AO-73 or EO-88."
JY1-SAT is currently running in safe mode with only 30 mW of power out, so it's 10 dB weaker than AO-73 (currently at about 300 mW in full sun) and about 13 dB weaker than EO-88 (in sunlight - running 500 mW).
73,
Paul, N8HM On Fri, Dec 7, 2018 at 3:45 PM Hasan al-Basri hbasri.schiers6@gmail.com 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@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/
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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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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@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/
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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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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@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@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/
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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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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@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@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@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/
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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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of
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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@amsat.org
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@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@amsat.org
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@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@amsat.org
Sent via AMSAT-BB@amsat.org. 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
Final thought on this, JY1SAT dashboard is broke, I started it and the Funcube dashboard together and at the end of the pass the two were within one decode of each other, I let them idle until the next pass and at the end of that next pass FC 220 JY1 139 decodes.
It's not a signal issue as the signal is booming in and they are both using the same dongle, my guess would be that that it never gives up looking for the signal in the last place it saw it, so the sat has to doppler down close enough to that point for it to pick it up again.
A video of how JY1 sits there and ignores the signal is in the link below, hopefully the link does not get stripped out from this email.
https://www.dropbox.com/s/sc3ln32y8u4s6uk/jy1sat.mp4?dl=0
For now I will just not run the JY1 dashboard for telemetry gathering.
73 All WA7FWF
On 12/8/2018 9:58 AM, Kevin wrote:
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@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@amsat.org
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I have run several more passes, and I'll have to agree. Something is not right with the auto-tuner. It has to be baby sat, contantly dropping lock in response to the auto tune not functioning even well within the specified range. 73, N0AN
Hasan
On Sat, Dec 8, 2018, 3:25 PM Kevin <wa7fwf@gmail.com wrote:
Final thought on this, JY1SAT dashboard is broke, I started it and the Funcube dashboard together and at the end of the pass the two were within one decode of each other, I let them idle until the next pass and at the end of that next pass FC 220 JY1 139 decodes.
It's not a signal issue as the signal is booming in and they areboth using the same dongle, my guess would be that that it never gives up looking for the signal in the last place it saw it, so the sat has to doppler down close enough to that point for it to pick it up again.
A video of how JY1 sits there and ignores the signal is in the link below, hopefully the link does not get stripped out from this email.
https://www.dropbox.com/s/sc3ln32y8u4s6uk/jy1sat.mp4?dl=0
For now I will just not run the JY1 dashboard for telemetry gathering.
73 All WA7FWF
On 12/8/2018 9:58 AM, Kevin wrote:
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@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@amsat.org
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Hi Hasan,
Many thanks for your observations and for your support of the FUNcube missions.
I suggest you have a look at our January update about Dashboards and other software. It shows a later version of the JY1 Dashboard was made available after the launch of JY1Sat and which should work better for you.
https://funcube.org.uk/2019/01/21/funcube-dashboard-summary-update/
73
Graham G3VZV
On 08/12/2018 16:46, Hasan al-Basri wrote:
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@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@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@mindspring.com
wrote:
Kevin,
Yes, I was also running simultaneously the telem software latest
version.
73 Christy KB6LTY
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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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Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb .
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participants (6)
-
christy hunter -
Graham Shirville -
Hasan al-Basri -
JoAnne K9JKM -
Kevin -
Paul Stoetzer