Adding an SDR for Satellite Operation
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…”
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 [email protected] 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…”
Sent via [email protected]. 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
Les,
I snd you the diagram of my station directly.
If you use HDSR you may connect directly to SatPC32 through the DDE and just switch antenna to use either the TRX or SDR for Rx at convenience.
73
Jean Marc (3B8DU)
On May 5, 2018, at 8:02 AM, Mike Thompson [email protected] wrote:
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 [email protected] 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…”
Sent via [email protected]. 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 [email protected]. 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
participants (3)
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Jean Marc Momple -
Les Rayburn -
Mike Thompson