[amsat-bb] Adding an SDR for Satellite Operation

[Mike Thompson]

This is how I did it.

https://www.youtube.com/watch?v=ALv2EQ4T8hU

The SDR was on the other side of a duplexer, and that provided a decent bit
of isolation. If one were to have separate antenna's and a duplexer, I
would think that would be sufficient isolation.

SatPC32 talking to HDSDR or SDR# as a 2nd radio.

On Fri, May 4, 2018 at 10:34 PM, Les Rayburn <les at highnoonfilm.com> wrote:

> I’ve worked just over 100 contracts through LEO Satellites, mostly on my
> Icom IC-910H using SatPC32. Easy enough, but I’d like to use one of my SDR
> receivers for the RX side. But I’m not certain how to go about it.
>
> Can I simply route the RX antenna to the SDR and use the IC-910H for the
> uplink? How do I get them to track together and compensate for Doppler? Do
> I need to protect the SDR from the RF levels on the TX side (even though it
> will be on another band?)
>
> Searched Google for “How to” articles, but haven’t found anything very
> helpful. If someone has a link or just some advice, I’d be most grateful.
>
> I’ve got an Elad FDM-S2, Airspy, SDRPlay RSP-2, and others to try this
> with.
>
>
> 73,
>
> Les Rayburn, N1LF
> 121 Mayfair Park
> Maylene, AL 35114
> EM63nf
>
> Member WTFDA, IRCA, NRC. Former CPC Chairman for NRC & IRCA.
>
> Elad FDM-S2 SDR, AirSpy SDR2, SDRPlay RSP-2 Pro, Sony XDR-F1HD, Dennon
> TU-1500RD, Sangean HDT-1, Ray Dees RDS Decoders,
> Korner 9.2 Antenna, FM-6 Antenna, Quantum Phaser, Wellbrook ALA1530 Loop,
> Wellbrook Flag, Clifton Labs Active Whip.
>
> “Nothing but blues and Elvis, and somebody else’s favorite song…”
>
>
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