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

Thu Apr 4 03:40:33 UTC 2019

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
>
>
>