They could well be out of RBM  or  RBS.  It is too many decades since I last saw the insides of one of those.  But they are not (as someone else wrote) out of any one of the two  groups of models of BC-224 or three groups of models of BC-348.  I have a bunch of those - somewhere.

Robert Downs

From: [email protected] [mailto:[email protected]] On Behalf Of howard holden
Sent: Tuesday, November 23, 2021 22:02
To: Glenn Little WB4UIV; [email protected]
Subject: Re: [Milsurplus] Module identification

Glenn, they look rather similar to the bandswitching modules used in an RBS receiver from WW2. Possibly for an RBM, as they look similar. They come out only after the long bandswitching shaft has been removed. There’s one for RF in, RF out, and the oscillator. And the small trimmers on the sides have a tendency to short out due to weak springs holding them together.

73, Howie WB2AWQ Reno NV

Sent from Mail for Windows

From: Glenn Little WB4UIV
Sent: Tuesday, November 23, 2021 7:26 PM
To: [email protected]
Subject: [Milsurplus] Module identification

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

Thanks
73
Glenn
WB4UIV


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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            [email protected]    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"