I think Steve has it, what I know as a "bias T" to send control with RF over coax. I have often used + or - voltage to get 3 "positions" at the far end.
RF
On Mon, Mar 30, 2026 at 5:46 PM Steve Marrow via MRCA <[email protected]> wrote:
______________________________________________________________Power over the coax to Rx amplifier or tuner.
SteveKM4V
From: [email protected] <[email protected]> on behalf of Mike Feher via MRCA <[email protected]>
Sent: Sunday, March 29, 2026 7:57 PM
To: 'B. Smith' <[email protected]>; 'Military Radio Collectors Association' <[email protected]>
Subject: Re: [MRCA] Midnight Oil ProjectSWR bridge with LED indicator? Blessed Easter to all – 73 – Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
908-902-3831
From: [email protected] <[email protected]> On Behalf Of B. Smith via MRCA
Sent: Sunday, March 29, 2026 9:59 PM
To: Military Radio Collectors Association <[email protected]>
Subject: [MRCA] Midnight Oil Project
Last night's Midnight oil project.
Z
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