[Milsurplus] CMS Set

[Mike Feher]

The cover I was talking about only goes over the top section. Out of the 5 CMS sets I had, I have only seen one of them. I have 4 left and just checked in the room where they are, and I did not see a single one. Of course in that very large family room besides about 10 shelf units there is a stack of equipment 2 to 3 feet tall all over the floor. Maybe with the help of one of my sons, I can locate the CMS set  with the said cover. 73 – Mike 

 

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

 

From: milsurplus-bounces at mailman.qth.net <milsurplus-bounces at mailman.qth.net> On Behalf Of Dennis Monticelli
Sent: Tuesday, May 5, 2020 3:59 PM
To: Milsurplus <milsurplus at mailman.qth.net>
Subject: [Milsurplus] CMS Set

 

I own CMS serial number 94H (matching for RX and TX).  The manual floating on the web is a scan I did from the manual that was included with my set.  Yes, there is a wood lid to this suitcase radio.  It carries the schematics and tuning graphs under yellowed plastic just like a clandestine set should.  It had the remnants of a decomposed leather strap handle.

 

Although the 6L6 (or 6V6) tubes had already been raided when I found this set, my RX carries what I believe are the original three 3S4 tubes along with the included spare.  All four tubes are RCA and carry the same date code of V6E (Nov/Dec 1945).  That implies post-war construction and jives with the early 1945 formation of Electronic Research & Mfg Co. of Cleveland as the builder.

 

There aren't many CMS sets floating around but there is definitely a bunching of serial numbers in the 90's (I located two others via my web search).  Might this represent the second (post war) build after a re-purposing of the set had taken place?  As others have pointed out the circuit design is from the 30's and everything about it points to a clandestine use.  Was that original mission ever carried out? Was it the Navy keeping tabs on what the Japanese were up to pre 1941?  The earlier serial numbers are very few and scattered, not bunched like the 90's.  The earlier serial numbered sets show signs of wear and tear. The 90's have survived in much better shape and are much more complete.  Were the latter even issued to the field before finding their way to surplus channels?

 

CMS remains a mystery set.

 

Dennis AE6C

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