[amsat-bb] AO-85 telemetry hints

[Chris Thompson]

I will pile on to Mark's reponse in case you want to use the other "IQ"
features of FoxTelem, such as capturing the RF Signal To Noise or the TCA.
If you use a program like HDSDR, then you can also feed the IQ audio to
FoxTelem rather than the decoded audio.

Chris

On Fri, Oct 9, 2015 at 10:31 AM, Mark L. Hammond <marklhammond at gmail.com>
wrote:

> Hello Steve,
>
> The only hardware/SDR supported natively by Foxtelem 1.0 is FCDP or
> FCDPplus.
>
> For other SDRs, you have to use something like SDR#, HDSDR, SDR-Radio V2,
> to decode the audio (FM,about 12-15kHz wide,audio filtering OFF); ouput
> that audio to a virtual audio cable, then set up Foxtelem to use that
> virtual audio cable as input.   It works, both live and with recordings,
> both slow and high speed.
>
> I will copy AMSAT-BB since others will ask, too :)
>
> 73,
>
> On Fri, Oct 9, 2015 at 10:08 AM, Greene, Stephan A <
> stephan.a.greene at vencore.com> wrote:
>
> > Mark:
> >
> > Have you tried other SDR than the FCD Pro?  I know the Fox telemetry
> > software detects the FCD (it appears in the source pull down menu), I
> > haven't figured out how to get it to similarly "see" my SDRPlay.
> > With the FCD Pro, did you set the telemetry software to use IQ input or
> > audio (your post suggests audio), fast or slow settings?
> >
> > Any tricks to using the telemetry software with other SDR software?
> > (I've been trying HDSDR so far, I have an older copy of SDR# that should
> > still work with my SDRPlay, and SDR-Console works with it, too)  Or do
> > you create an IQ recording and just play it back?
> >
> > 73 & Thanks!
> >
> > Steve KS1G
> >
> > -----Original Message-----
> > From: Mark L. Hammond [mailto:marklhammond at gmail.com]
> > Sent: Friday, October 09, 2015 6:34 AM
> > To: amsat-bb at amsat.org
> > Subject: [amsat-bb] AO-85 telemetry hints
> >
> > Hi All,
> >
> > On the 10utc pass this morning, while the transponder was on and in use:
> >
> > I learned that reducing the width of the cutoff filter in Foxtelem
> > program made it so I could copy the subaudible telemetry packets with
> > the Funcube Dongle Pro.  Reducing from the default 200 Hz to about 180
> > or 175 seemed to work here.  It shows up as a decent eye pattern after
> > that.
> >
> > Another FYI-When playing back an IQ recording via SDR#, it seems a bit
> > more forgiving, working well around 175-200.
> >
> > Suggest folks experiment for best copy! Share hints here, please!
> >
> > 73,
> >
> >
> >
> > Mark L. Hammond  [N8MH]
> >
> >
> >
> >
> >
>
>
> --
> Mark L. Hammond [N8MH]
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-- 
Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net