[amsat-bb] Multiple Rx SDR on AO-85, 91, 92 and ISS/NO-84-PSAT

[Hasan al-Basri]

Using an SDRPlay RSP2 with SDR Console V3, I was able to set up a multiple
sat receivers while leaving the decoders for FoxTLM DUV and Packet running
at the same time.

Since they are all FM in in the same general frequency range, , all I
needed to do was SQUELCH all the receivers at roughly the same squelch
point and let them run. Running them unsquelched (all putting noise into
the same rx channel of VBAudio at all times, did  not work very well)

FoxTLM > VBAudio > SDRC v3 > 2m Eggbeater
(this captures tlm for AO-85/91/92 and uploads it automagically to the Fox
Server Leaderboard)
Receivers 1,2 and 3 are set to AO-85/91/92, respectively.

Direwolf  > VBAudio > SDRC v3 > 2m Eggbeater
(All decoded packets on 145.825 are sent to APRS-IS automatically, so ISS
and PSAT are both covered.

I have this configuration saved as a Favourite  in SDR Console v3, so all I
need do, it click on that Favourite and all 4 Rx come alive and output
whatever they hear to VBAudio and VBAudio feeds whatever decoding software
is running. (All can run at the same time, VBAudio doesn't seem to care)

It isn't perfect, but it works surprisingly well. Obviously, if there are
other sat downlink signals that open up the squelch of one of the other
receivers, it messes up the decoding, as it contributes noise to the common
audio channel.

This way, if I'm not going to be in the shack, I can click one button and
collect telemetry and packets all while when I'm gone.

Others with SDRs can figure out similar uses.

73, N0AN
Hasan