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

Wed Apr 10 03:25:33 UTC 2019

For some reason mail from this list with the above subject from Chris is 
not getting into my mailbox. Luckily I check the web based archive every 
now and then.

Chris, thank you for updating the PacSat software and fixing the Java 
problem. Version 0.22 is starting up without any problems now. I use UDP 
streaming from GQRX into direwolf and the PacSat software can read the 
KISS data via TCP on port 8001 then. Every time v0.22 is starting up it 
still complains that I need to set up a virtual serial port, but the 
ignoring the warning seems fine. It shows a 'decoder ready' message, so 
I assume that means it's working.

Reading the manual now as I have no experience with PacSat. Waiting for 
a good pass of Falconsat-3 tomorrow to see if I can get some data in. 
Data out is for another day.

73 and cheers,

Hans

BX2ABT

On 04/04/2019 11:40 AM, Hans BX2ABT via AMSAT-BB 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