[R-390] Frequency Synthesis on the R-390/A using the SBM-1102

[Tom Frobase]

I bought a mid 50's Motorola R-390A recently with these modifications 
installed.  Each of the effected sections have a plug in module housing 
a relay and cable assembly wired to the back of the radio.  This radio 
was not re-branded.

My intent is to restore the radio to its original mode and pass the 
modules on.  I would enjoy reading the document.  If anyone is 
interested I can take a couple of pictures. if you don't mind a very 
dirty R-390A

tom, N3LLL

Tisha Hayes wrote:
> I ran across a document explaining the setup of the FFR-41 and how the
> SBM-1102 would provide precision frequency synthesis to a pair of R-390A's.
> (document MM03276).
>
>