I don't see any XTALs and the selector switch has torroids 
The 3B4 tube was first introduced in 1948 according to the release notice, so it was post WWII.

The more I look at it, the less it looks like a radio. maybe a metal detector chassis?
On Saturday, November 29, 2025 at 03:28:43 PM EST, Al Klase <[email protected]> wrote:




  

Larger tube is a 3B4 (Gone to air)

What is this?
AL
--
ARK Sig Block Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/


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