The same relay was also used in the ARC VHF prototype set - (RE-16/ARC-5 antenna relay, T-89/ARC-5, and T-90/ARC-5 transmitters) and in the T-27/ARC-3.  So it got around...
- Mike  KC4TOS



On 11/11/2021 4:04 AM, Robert Downs via ARC5 wrote:
Yes.  The antenna relay for the T-23 and R-28 (and their SCR-274-N predecessors) was always mounted behind the top of the transmitter front panel.  There was never any separate VHF antenna relay unit as there was with all transmitter equipped versions of the MF/HF sets.  In both versions of the VHF sets, a short coaxial cable ran from the transmitter to the receiver.  And the VHF antenna was connected directly to the transmitter by a second coaxial cable.

Robert Downs


-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of MARK DORNEY via ARC5
Sent: Wednesday, November 10, 2021 22:14
To: [email protected]
Subject: [ARC5] T-23/ARC-5 antenna relay

Anybody have any idea what the T-23/ARC-5 and R-28 used for an antenna relay?  Antenna feed from the T-23 was coax, and the RE-2/ARC-5 antenna relay didn’t have a post to connect coaxial cable. If an adapter was used, any help identifying the adapter would be appreciated   

Mark D. 
WW2RDO