[R-390] Suggestions for SSB adapter for R-392?

[Tisha Hayes]

I guess if I was in the market for a new adapter I would consider the
Sherwood Engineering SE-3 MK IV. A great many of the neat features are built
into the box.

http://www.sherweng.com/indepth.html#features

Right now I have a TMC CV-591A that probably generates more heat than an
R-390. I keep it because it can work on either R-390A or the SP-600. For the
other receivers, most have USB/LSB/ISB capabilities but they "are not"
classical boat anchors, just premium receivers.

If you were to go out and buy a restored CV-591A you could spend as much as
the price of a new SE-3. If you are trying to keep your setup as "period
authentic" then the CV-591A is probably one of the better ways to go.

I do not have too much faith on the inboard SSB mods to the R-39x series.
Most are real compromise circuits. A few years ago I built an add-on box for
the SP-600 that put the circuitry from a JX-21A into a JX-17. It was more
effort than it was really worth. I traded that radio for a Cubic R-3030 and
stuck with the unmodified, stock JX-17.

-- 
Ms. Tisha Hayes/ AA4HA
-
*"Learning is not virtue but the means to bring us an acquaintance with it.
Integrity without knowledge is weak and useless, and knowledge without
integrity is dangerous and dreadful. Let these be your motives to action
through life, the relief of the distressed, the detection of frauds, the
defeat of oppression, and diffusion of happiness."  -- Nathanael Greene*