[amsat-bb] Fox Telemetry Decoder Software Version 1.0 Available for Download

Chris Thompson g0kla at arrl.net
Wed Sep 23 21:52:41 UTC 2015

Paul,  Glad you like it.  The source will be posted shortly.  Sometime in
the next two weeks.  I just have to make sure that the licenses are
straight for other people's code that is reused.  The code I have written
is GPL, as the manual says.

The priority was to get the decoder into people's hands to make sure it
works before launch.  Please let us know if there are any issues.  The
source code will follow.


On Wed, Sep 23, 2015 at 1:03 PM, Paul Williamson <kb5mu at amsat.org> wrote:

> I'm very happy to see AMSAT releasing software in advance and under an
> open source license (according to the manual, GPL3 or later). So, where is
> the source code?
> 73  -Paul KB5MU
> On Wed, Sep 23, 2015 at 4:44 AM, Chris Thompson <g0kla at arrl.net> wrote:
>> Fox Telemetry Decoder Software Version 1.0 Available for Download
>> Version 1.0 of the FoxTelem software, the Fox Telemetry Decoder is being
>> released to enable setup, testing, and debugging of your Fox-1A ground
>> station prior to the launch of the satellite. FoxTelem is used to
>> demodulate, store and analyze telemetry data from AMSAT’s Fox series of
>> Cube Sats.
>> Fox-1 satellites include two telemetry formats:
>> + Slow Speed, also called Data Under Voice (DUV) is 200 bps FSK data
>>   sent at the same time as the transponder audio. Whenever the trans-
>>   mitter is on, data is being sent. This happens during beacons and
>>   during live QSOs.
>> + High Speed is 9600 bps FSK sent instead of the transponder. This is
>>   used for data intensive experiments such as the Virginia Tech Camera.
>>   This is only active when commanded from the ground. You can recognize
>>   High Speed because it sounds like an old school computer modem.
>> FoxTelem will receive and store both formats assuming you can feed it
>> audio
>> that does not have the frequencies below 200 Hz filtered.  For High Speed,
>> the audio must also extend to include the full 9600bps bandwidth of the FM
>> signal. For both modes this is best achieved from a Software Defined Radio
>> or from the 9600 bps packet port of some radios. The FoxTelem User Guide
>> provides more details.
>> FoxTelem is supplied as an archive file (.zip on windows, .dmg file on
>> MacOs, .gzip on Linux). Links for downloading can be found at:
>> http://www.amsat.org/?page_id=4532
>> You can unzip the contents and put it in the directory of your choice.
>> Also, detailed in the User Guide, are instructions to select the sound
>> source and set received audio levels on your computer.
>> Until Fox-1A is launched you can confirm everything is working by testing
>> with test wav file which will be available from:
>> http://amsat.us/FoxTelem/recordings . Access to the test file is
>> accomplished by selecting “Load Wav File” from the FoxTelem File menu,
>> then
>> navigate to the directory where you saved the test wav file. Once you
>> press
>> the start button the file will play through the decoder.
>> The FoxTelem page can also be accessed from the main AMSAT web page:
>> http://www.amsat.org --> Fox Project --> FoxTelem Software for Windows,
>> Mac, & Linux
>> The direct link to the page is: http://www.amsat.org/?page_id=4532
>> --
>> Chris E. Thompson
>> chrisethompson at gmail.com
>> g0kla at arrl.net
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Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net

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