Looked in the RBS manual, same concept but totally different construction. Have a 348 but never had the modules out.

Howie WB2AWQ

Sent from Mail for Windows

From: Michael Hanz
Sent: Wednesday, November 24, 2021 5:25 AM
To: Glenn Little WB4UIV; [email protected]
Subject: Re: [Milsurplus] Module identification

Sure looks like BC-348 to me.  Manual photo is from the BC-348 - E, M, P manual.
- Mike  KC4TOS

On 11/23/2021 10:26 PM, Glenn Little WB4UIV wrote:

Can anyone tell me what radio these RF modules are from?
Pictures are attached.