[R-390] R-390 distant cousin?

[Don Reaves W5OR]

John, K4OZY, found and adopted an unusual Collins Navy contract receiver at
a hamfest.
It is an R-627, part of URC-8.  He is seeking more information, and a manual
or schematic.

It shares some characteristics with the R-390.  To me it looks like a cross
between an
SRR-13 and an R-390.  Anyone know about these radios?  Reply to me or the
list, I'll 
forward to John.  

 http://www.jptronics.org/radios/Collins/R627

Don W5OR