[R-390] New R-392 owner

Sun, 2 Jun 2002 15:25:17 -0400

Andy,

As a long-time owner of 3 R-392's (I've owned one of them for about 18
years, never had to change even one tube in it), I can tell you that they're
basically plug-and-play, unless a previous owner did mess it up... Due to
the low voltages used in it, (24-28VDC) the components suffer  much less
"wear and tear" than the R-390(and A) models. I never experienced any
shorted capacitors or way out resistor values in them.
Performance-wise, the R-392 is a little less sensitive than the R-390 (or
A).
As to "nothing in the universe is as sensitive as the R-390/A", this is not
quite true. I have 3 German receivers of the same general vintage as the
R-390/A (1950's and 60's), each of them has better sensitivity according to
their original specifications, than the R-390/A. They are the Rohde &
Schwarz EK-07, the Siemens  E309a and the Siemens E311b.
The increased sensitivity of the R-390/A is achieved by individually
tweaking the receivers and selecting tubes (there is an article regarding
those measurements and how the results were achieved).
The R-392 has a very decent performance and I use it a lot on the ham bands
(in conjunction with its matching transmitter, the T-195), as well as for
some short-wave listening.

Good luck with yours and enjoy it.

73, Meir WF2U

Landrum, SC

 -----Original Message-----
From: 	[email protected] [mailto:[email protected]]  On
Behalf Of James A. (Andy) Moorer
Sent:	Sunday, June 02, 2002 2:43 PM
To:	[email protected]
Subject:	[R-390] New R-392 owner

I just acquired an R-392 that is claimed to be working.

Is there a "must replace" list for the R-392?
I know for the R-390A, there are certain capacitors that you replace on
sight before you power up the unit. Does the R-392 have any such that I
should know about?

I understand that nothing in the universe is as sensitive as the R-390/A,
what kind of performance should I expect from the R-392? Is it at least
comparable?

Thanks folks.

--
James A. (Andy) Moorer
Adobe Systems

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