[R-390] CV-591A question

Jim Brannigan [email protected]
Sat, 19 Oct 2002 08:28:42 -0400


The CV-591 and variants were made by TMC of Mamaroneck, NY.  The best one
had an adjustable AGC output.
Other "Single Sideband receiving adapters" were made by B&W, Eldico and
Hammarlund.
The best one is the Hammarlund HC-10 (if you can find one)
There are also a number of "home-brew" designs around.
They all work on the same principle:
A product detector with a crystal and/or variable BFO, additional IF
filtering and an audio amplifier.  Different models include noise reduction,
Q-multipliers, pass-band tuning and S-meters.
Jim
> I would to buy a CV-591A or similar to go with my R-390 non "A". I have
> never had one of these before and I would like to know if anybody knows
> if there are different manufacturers and if so what is the difference
> between them? ? What about models? Are there different models ranging
> from new to old? What are the going prices for these?