[R-390] R-392 market prices and availability?

[Guido Santacana]

I have owned two of these. The first one was from FRS and it was complete
and original. A good friend built a heavy duty PS for it with regulated
28vdc. My second unit was about $300 with a good PS, cables and speaker. It
has a solid state module for the audio section that sounds great. I thougth
about retrofitting it with the original 26A7 tube etc but it sounds so nice
and with such a powerful audio that I' ll leave well enough alone. This
solid state module seems to have been used a lot. So,  a good unit with PS
should be an average of $300. Your mileage will vary.

73s

Guido Santacana
KP4FAR

On Sunday, August 31, 2014, Charles Steinmetz <csteinmetz at yandex.com> wrote:
> I wrote:
>
>>>  I'd look for an unmolested original radio and then make whatever
changes you decide are best.
>
> Bob wrote:
>
>> or just get an amplified speaker.
>
> An amplified speaker is a good way to go, as is an external amplifier
with a separate speaker.  But you still have to feed the amplifier
something, and the existing audio output from a 26A7 running steaming hot
with no bias is not a very good source.  So it's either fix the 26A7 stage,
or tap audio off another point in the radio (and you'll find that there
isn't really any good place).  Even if you did tap the audio from somewhere
else, it's still a good idea to fix the 26A7 bias so it's not wasting power
and killing itself.  At which point, why mess with tapping the audio
someplace else?  Just use the newly-fixed 600 ohm AF output.
>
> Best regards,
>
> Charles
>
>
>
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