[R-390] R220-URR

[roy.morgan at nist.gov]

Quoting mike Kana <aa9il at sbcglobal.net>:

> Hi All
> 
> I recently picked up a Motorola R220/URR receiver. 

I have one here, and can report just a little bit about it:

- It was used by the Army for presumably tactical base station use.
- it covers something like 40 mc to 220 mc (I could be quite wrong on this)
- It has FM, AM, and I think CW modes
- It is HEAVY, like about 80 pounds or so
- It uses submineature tubes in the front end and oscillator sections, at least
one of which is moderately pricey now.
- It has two odd tuning coils with ferrite slugs for RF front end tuning (In my
receiver, one of the slugs is loose from it's rod and I have no idea how to get
at the thing short of major dis-assembly and subsequent re-manufacture and
perhaps difficult re-alignment.)
- The connecting cable from the RF to IF sections, about 3 inches long, has an
odd connector, and of course must be there for the thing to operate.
-The knobs on the thing are odd, I've seen them nowhere else.  I seem to
remember something odd about them: some run on 1/8 inch shafts, or they have
locking mechanisms in them or some similar thing. I remember deciding that
finding replacements for some missing on my radio would be most unlikely.

- WARNING:  At least in the one I have, the bottom cover is made such that
without the cover in place, the tips of the under-chassis tubes extend below
the frame, and can (did!) get broken by simply putting the thing on a bench.

   Any information would be
> appreciated.

Does that mean you have no manual?  I have one, but unfortunately, it *may* be
among the things that recently went to storage.  No telling when I might see it
again if that is the case.  I think I can get to my receiver farily easily,
though.

Roy
K1LKY
 

Roy Morgan
7130 Panorama Dr.
Derwood MD 20855