[R-390] Columbia Electronics tag & SSB mod

[Tom Bridgers]

Hi Ric and list members:
The Columbia Electronics tag, I have #2043, reads as follows:

-----------------------------------------------
RECEIVER, RADIO R-390A/URR
    serial no   2043
    supplied by
COLUMBIA ELECTRONICS INT'L. INC.
    Los Angeles, California U.S.A.
115/230 VAC  48-62 ~ 220W
------------------------------------------------

The USB/LSB mod is documented in Paolo Viappiani's book,
R-390/URR - R-390A/URR HANDBOOK, published by
Editrice Il Rostro.  See pp 55-56.  The book is written in Italian;
however, the circuits are in English.

Paolo also covers the AGC mods, the Kleronomos audio mod, and several 3TF7
mods.

I heard the book was available now in the US, but unfortunately I don't know
from whom.  Maybe Amazon?
73's,
-tom

----- Original Message -----
From: "C R E Strachan" <c6aniportnelson>
To: "Tom Bridgers" <Tarheel6 at msn.com>
Sent: Wednesday, March 29, 2006 9:22 AM
Subject: Re: [R-390] SSB R-390A?


> Hi Tom:
> Saw your posting and I'm wandering if by chance you might have details of
> the NEW COLOMBIA ELECTRONICS modifications for SSB. My interest stems from
> the fact that I've got a couple of the R-390A/URR's. I've got a R-725/URR
> with one of the TMC's SSB converter but I'm not that impressed with it.
> Am aware of Capt. Lee's mod but always wondered if there could not be a
> better way relative to the AVC, noise limiter, S Meter performance et al.
> I've tried it. However, I'm yet to encounter a factory approved
> modification.
> What is the NEW COLOMBIA ELECTRONICS tag like?
> Thanks.
> Vy 73,
> C6ANI Ric.
> Old Cold Stonecrab
>
>