[amsat-bb] Best SDR for satellite reception

Paul Stoetzer n8hm at arrl.net
Sun Aug 13 17:25:20 UTC 2017


In Windows, you can configure SatPC32 to control HDSDR through a virtual
serial cable as well.

73,

Paul, N8HM

On Sun, Aug 13, 2017 at 1:07 PM, fabrice faure <fab4space at gmail.com> wrote:

> hello, you can use gpredict with gqrx to handle leo doppler with funcube
> 73 de Fabrice F4HHV
>
> Le 13 août 2017 18:23, "Paul Andrews" <w2hro.fn20 at gmail.com> a écrit :
>
> > Has anyone written software to allow the Funcube Dongle to be
> > frequency controlled to compensate for LEO satellite doppler?   For
> > linear satellites, 1Hz frequency control would be required.   For FM
> > 1KHz would be ok.   If it's not possible to control the actual FCD+
> > LO, it should be possible to control the baseband audio spectrum.
> >
> > I first used the FCD+ as a panadapter with an FT-847 with LEO linear
> > satellites.
> >
> > More recently, I use (dual polarization) two (2) Funcube Dongle Plus
> > SDRs for 2M EME and they are sensitive wideband (50 KHz) receivers.
> > Frequency stability on 144 MHz is very good and easily decode JT65
> > signals bounced off the moon.   No doppler compensation is used for
> > 144 MHz moon bounce.
> >
> > WSJT-X will control a commercial radio VFO to compensate for moon
> > doppler.   WSJT-X does not support control the FCD+ for doppler
> > compensation.
> >
> > The FCD+ is so widely used, I'm surprised that I have not found an
> > application that will control the FCD+ and support doppler
> > compensation.
> >
> > 73 - Paul - W2HRO
> >
> >
> >
> >
> >
> >
> > On Sun, Aug 13, 2017 at 7:03 AM, Andrew Rich <vk4tec at internode.on.net>
> > wrote:
> > > With the proliferation of software defined radios on the market I am
> > interested to hear what people think is the best for 137 / 144 / 440 /
> 1296
> > MHz use.
> > >
> > > I have selected the airspy mini based on the fact
> > >
> > > It's 12 bits
> > > It's got tracking filters
> > > It works with sdr sharp, hdsdr, gnuradio, gqrx
> > >
> > > Has anyone bought out a satellite specific SDR ?
> > >
> > > The funcube dongle is probably the best ?
> > >
> > > I have a hack rf as well as rtl sdr and sdr play
> > >
> > > Andrew
> > >
> > > Sent from my iPhone
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> _______________________________________________
> 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!
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