The MFJ box looks nice, but you can do this with just an RF relay if you have one in the junk box. Maybe you have one lying around from an amplifier project that never quite got finished.. You could switch it with 12V and a toggle switch. I switch between an SDR and my 2m transmitter when FalconSat needs to be sent a packet. The TNC keys a sequencer which then switches everything over including the antenna. So the 2m antenna is only connected to the 2m radio when it sends a packet. The rest of the time it is connected to an SDR monitoring telemetry.
73 Chris
On Mon, Nov 9, 2020 at 2:03 PM Jack Spitznagel via AMSAT-BB < [email protected]> wrote:
I use the MFJ-1708SDR switching system this way with an SDRPlay RSPdx... works beautifully, runs off my field Bioenno.
Jack Spitznagel - KD4IZ Science River LLC Biomedical Consulting Services
-----Original Message----- From: AMSAT-BB [email protected] On Behalf Of Bob Hammond via AMSAT-BB Sent: Monday, November 9, 2020 12:55 To: [email protected] Subject: Re: [amsat-bb] Antenna switching between 2 radios
I use two Alpha Delta Model DELTA-2B/N coax switches for this very application.
Bob W7OTJ
On Mon, Nov 9, 2020 at 8:10 AM Don Solberg via AMSAT-BB < [email protected]> wrote:
I am using HPSDR and SDR Play as my receiver radio, and a Yaesu FT-857 for my transmitter. I am looking for an easy way to switch the VHF and UHF antennas to the appropriate radio. I have found a discussion on automating this process with SatPC32 and a "coaxial transfer switch" but there is no information on what switch to use for this. I don't need this to be automated but I am looking for something better than manually swapping coax cables.
73,
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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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb