[amsat-bb] Best SDR for satellite reception

[Pedro Converso]

Hello Paul,

Regarding software to control doppler on SDR:

For sats, I run HDSDR V2.76 using a generic SDR with RTL2832 Chip.

Running http://amsat.org.ar/pass.exe handles nicely SDR Freqs.

Seamlessly clicking any satellite, its Freqs+Dopplers are set on SDR.

73, LU7ABF, Pedro.

On Sun, Aug 13, 2017 at 1:12 PM, Paul Andrews <w2hro.fn20 at gmail.com> wrote:
> 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
>> _______________________________________________
>> 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!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> 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!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb