[amsat-bb] New Telemetry Decoder for FalconSat-3

Fri Apr 5 21:03:57 UTC 2019

Hans,

Sorry about that. It's a bug in the code that only manifests itself on some
versions of Linux. I had to fix the same bug in FoxTelem recently. I'll
need to make a new build available.

73
Chris

On Wed, Apr 3, 2019, 23:42 Hans BX2ABT via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> Hello all,
>
> I downloaded the software (V0.21) from the G0KLA website, running it on
> Linux (Kubuntu 18.04 with Java version 0.64). Well, I'm trying to run
> it, because I get the following error message.....
>
> java -jar PacSatGround.jar
> Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 1
>          at PacSatGround.main(PacSatGround.java:29)
>
> On my laptop it runs fine, albeit it uses a slightly older Java version
> (0.59) on Debian Testing from 18.03 (Netrunner).
>
> Question: is there a specific Java version that has to be used with
> V0.21 of  the PacSat software, or is my system messed up and I need to
> do a fresh install?
>
> Cheers,
>
> Hans
>
> BX2ABT
>
>
>
> > Chris
> >
> > On Sat, Feb 9, 2019, 14:03 Douglas Quagliana <dquagliana at gmail.com>
> wrote:
> >
> >> Hi Chris,
> >>
> >>     I've been able to pull AX.25 frames from the satnogs .ogg
> recordings of
> >> Falconsat-3 and I usually get more valid frames than satnogs shows on
> the
> >> webpage when using my brute force demodulator (my brute force
> demodulator
> >> was the topic of my Symposium paper).
> >>     Can you contact me off the list and let's work out how to automate
> >> demodulating telemetry from the existing recordings (and new recordings
> as
> >> they get added) and get it into the telemetry server.
> >>
> >> 73,
> >> Douglas KA2UPW/5
> >>
> >>
> >> On Sat, Feb 9, 2019 at 11:21 AM Corey Shields <cshields at gmail.com>
> wrote:
> >>
> >>> Hi Chris, we spoke at the symposium about sharing data..
> >>>
> >>> The best way to pull data would be to periodically pull from the api
> for
> >>> db.satnogs.org, however its not working at the moment[1]. I've got
> some
> >>> free time this weekend, I'll see if I can get this fixed.
> >>>
> >>> That said, we have been decoding the messages we have from falconsat-3
> >>> into
> >>> our dashboard[2] going back to April. Its just running through a
> message
> >>> decoder, no telemetry. It shouldn't be too hard to write a struct for
> the
> >>> telemetry, and re-decode the frames so we can make use of the rest of
> the
> >>> data.
> >>>
> >>> I'll reach out directly once the API is fixed..
> >>>
> >>> Cheers,
> >>> -Corey  KB9JHU
> >>>
> >>> [1] -
> >>> https://gitlab.com/librespacefoundation/satnogs/satnogs-db/issues/266
> >>> [2] -
> >>>
> https://dashboard.satnogs.org/d/UZ30F5Xik/ax-25-monitor?refresh=1m&orgId=1
> >>>
> >>>
> >>>
> >>> On Fri, Feb 8, 2019 at 7:49 PM Chris Thompson <g0kla at arrl.net> wrote:
> >>>
> >>>> I'm not aware of that data or how to access it.  If there is an
> archive
> >>> of
> >>>> data and it includes the WE files then it might be useful to us.
> >>>>
> >>>> 73
> >>>> Chris
> >>>>
> >>>> On Fri, Feb 8, 2019 at 6:25 PM Scott <scott23192 at gmail.com> wrote:
> >>>>
> >>>>> That's great, Chris!  Thanks for all the work on that project.
> >>>>>
> >>>>> Regarding telemetry, does AMSAT access the data that is forwarded to
> >>>>> SatNogs?
> >>>>>
> >>>>> Ever since FalconSat-3 was turned over to the Amateur Community,
> along
> >>>>> with
> >>>>> I'm sure a lot of others, I have forwarded thousands of telemetry
> >>> packets
> >>>>> from FalconSat-3 to the SatNogs database using the DK3WN Telemetry
> >>>>> Forwarder
> >>>>> ( http://www.dk3wn.info/files/tlm_forwarder2.zip ).
> >>>>>
> >>>>> Now, I don't know HOW to access data that is forwarded to SatNogs in
> >>> that
> >>>>> way, but a lot of data is aggregated there from many of the past &
> >>>>> presently
> >>>>> active satellites that have known decoders.   I'm aware that Univ.
> >>>>> Colorado
> >>>>> / Boulder obtains data from the CSIM satellite that way; I would
> >>> imagine
> >>>>> others do as well.
> >>>>>
> >>>>> Thanks again for what I'm sure was a huge job on the new software!
> >>>>>
> >>>>> -Scott,  K4KDR
> >>>>>
> >>>>> =========================================
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: Chris Thompson
> >>>>> Sent: Friday, February 08, 2019 5:53 PM
> >>>>> To: AMSAT
> >>>>> Subject: [amsat-bb] New Telemetry Decoder for FalconSat-3
> >>>>>
> >>>>> I've written a new Ground station for FalconSat-3. If you had an
> >>> initial
> >>>> go
> >>>>> with WISP without success or if you have never tried to decode
> >>>> FalconSat-3,
> >>>>> now is a good time to try.  This requires much less setup than WISP.
> >>> And
> >>>>> don't be put off if you don't have a hardware TNC, this will work
> >>> with a
> >>>>> soundcard TNC. Or, if you didn't try to listen to FalconSat-3 because
> >>> you
> >>>>> don't have a station that can transmit commands to the spacecraft,
> >>> then
> >>>>> read on. We still need your help to decode telemetry.
> >>>>>
> >>>>> In particular we would like to encourage people to download the
> >>> Telemetry
> >>>>> and forward it to an AMSAT telemetry server.  Currently more
> >>> telemetry is
> >>>>> generated than we can download with AMSAT Operations ground stations.
> >>>>> Receive only stations can contribute to that as well as stations
> >>> equipped
> >>>>> to transmit to FalconSat-3 and request files.  You can see telemetry
> >>>>> uploaded so far here: http://tlm.amsatfox.org/tlm/FalconSat-3
> >>>>>
> >>>>> There are details about the spacecraft, how to install the software
> >>> and
> >>>> how
> >>>>> it works in the manual available if you download the software or
> >>> online
> >>>>> here: http://www.g0kla.com/pacsat/pacsat_ground_manual.pdf
> >>>>>
> >>>>> You can download the software at www.g0kla.com/pacsat/index.php.  I
> >>> have
> >>>>> also written some blog posts and thoughts about the software for
> >>> anyone
> >>>>> interested.  They are linked from the download page.
> >>>>>
> >>>>> There is much to do here of course and most of it probably won't get
> >>>> done.
> >>>>> I would call this a beta release.  If you have suggestions or bug
> >>> fixes
> >>>>> please log them online at https://github.com/ac2cz/Falcon/issues or
> >>> send
> >>>>> me
> >>>>> an email.
> >>>>>
> >>>>> The software is open source.  All the details are here:
> >>>>> https://github.com/ac2cz/Falcon/  The telemetry processing and
> >>> display
> >>>>> leverages common code from FoxTelem in a library here:
> >>>>> https://github.com/ac2cz/libTelem/
> >>>>>
> >>>>>
> >>>>>
> >>>>> --
> >>>>> Chris E. Thompson
> >>>>> chrisethompson at gmail.com
> >>>>> g0kla at arrl.net
> >>>>>
> >>>>> _______________________________________________
> >>>>> Sent via AMSAT-BB at 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
> >>>>>
> >>>>
> >>>> --
> >>>> Chris E. Thompson
> >>>> chrisethompson at gmail.com
> >>>> g0kla at arrl.net
> >>>> _______________________________________________
> >>>> Sent via AMSAT-BB at 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
> >>>>
> >>>
> >>> --
> >>> Corey Shields
> >>> _______________________________________________
> >>> Sent via AMSAT-BB at 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
> >>>
> > _______________________________________________
> > Sent via AMSAT-BB at 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
> >
> >
> >
>
> _______________________________________________
> Sent via AMSAT-BB at 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: https://www.amsat.org/mailman/listinfo/amsat-bb
>