[amsat-bb] FT991A with Foxtelem

[Chris Thompson]

Joe,

Check in the Radio's manual and see what frequency range the USB cable
passes.  All of the DUV data is below 200Hz and to decode we need the cable
to pass audio down below 50Hz.  Most radios filter that out because there
is 50Hz noise from the PSU or other sources.  This is one reason why an SDR
is good for DUV.

If you don't have the manual or can't work it out, then monitor the audio
with a soundcard spectrum analysis program and see if the noise goes down
to almost 0Hz.  There is a picture of the spectrum in the FoxTelem manual
as I remember.

73
Chris

On Wed, Jun 20, 2018 at 5:00 AM, Joe Pereira <joevk5ei at gmail.com> wrote:

> Hi Group,
>
> Helping a fellow Ham setting up his radio to decode the DUV from the Fox
> birds.
>
> Has anyone had success using the Yaesu FT991A USB audio output into the Fox
> Telemetry decoder.
>
> Any setup details would be much appreciated.
>
> TNX
> Joe
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-- 
Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net