[amsat-bb] FoxTelem with RTL-SDR

Greg D ko6th.greg at gmail.com
Sun Feb 9 03:43:41 UTC 2020


Thanks, Ed.  What did you do by way of configuration of either FoxTelem
or the RPi to get the Fox software to see the RTL dongle? 

I'm not getting to the point where it even starts the decoder; it
insists that the rtl-sdr dongle is not inserted.  I've tried this on
both a Pi2B and a 3B.  Same results.

As to the decode problem, the same dongle / pi setup works just fine
being the remote (tcp-ip) source for Gqrx, including its AFSK decoder,
so I think it might work for FoxTelem, if only the application would see
the dongle. 

Do I need to run FoxTelem as root or something like that?

Greg  KO6TH


EDWARD KROME wrote:
> Strangely, I have had zero success on HuskySat with Foxtelem 1.08w/RP4B/RTLSDR/tracked yagi. I could see signal on FT, but no frames counted. Nothing helped. But the same arrangement (with HB lindenblad omni) works just fine on all the 2M sats. (well, I only get about 60% as many frames on the RTLSDR as I do on a similar setup (same omni antenna, split) with FCDP+/RP3B+.) But HuskySat works properly with SDRPlay/HDSDR/win10/1.08y/tracked yagi/tracking & doppler SatPC32. No idea why.
>
> Ed K9EK
> EL98av
>
>
>> On February 8, 2020 at 3:12 PM Greg D via AMSAT-BB <amsat-bb at amsat.org> wrote:
>>
>>
>> Hi folks,
>>
>> Acknowledged that this is "not supported", but others appear to have had
>> some success using an RTL-SDR dongle under FoxTelem.  With the launch of
>> Huskysat-1, I though I'd give it a try.  I'm missing something, but
>> can't find any suggestions.
>>
>> I have a Raspberry Pi 2B that I've been using as an RTL-SDR server,
>> connecting Gqrx to it over the home network.  rtl_tcp is running there,
>> all just fine.
>>
>> Tried firing up the latest FoxTelem, choosing RTL SDR as the source, but
>> the program says it can't find the dongle.  "Insert the device or choose
>> an other source" when I hit Start.  Shut down rtl_tcp, of course, so as
>> to not have a fight over access.  Tried removing and inserting the
>> dongle.  Still no joy.
>>
>> I expect I'm missing some morsel of driver software or configuration to
>> connect FoxTelem to the RTL-SDR dongle, perhaps something similar to
>> rtl_tcp. 
>>
>> What am I missing?
>>
>> Thanks,
>>
>> Greg  KO6TH
>>
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