[R-390] Interesting R390A

[Raymond Cote]

Well, the radios that I worked on ON A SUBMARINE were stock R390-A radios.  It was very early in the 1960's and they looked just like the 5 I have now.  A short time later (1 year) we converted to the R1051, and sometimes the 390 returned due to operational needs.  
There would be no reason I can imagine to add some of the things I saw other than being added by someone who liked to change things in his shack.  My .02 cents worth.

 From: chacuff at cableone.net
 
 
 That's a stretch...
 
 Panel is not original...looks to be a flat sheet with all the holes drilled. 
 No countersunk holes which is why the name plate had to be relocated.  The 
 toggle switches are not what you would expect for a mil spec project.  I 
 don't ever remember there being a mention that R-390A's were ever used on 
 Submarine service.