[R-390] Will trade nice 390 or 390-A for

[Roy Morgan]

At 08:42 PM 8/14/2006, you wrote:
>I would like ... R-389 of some other High -End VLF receiver.
>
>I have to offer one of several R-390's or R390-A's.

Scott,

You may know that a nice R-390A is worth maybe $600 to $1000 and an R-389 
in any functioning condition might start at $2500 and up.

If you want a tube type VLF receiver, you may want to look for an RAK, RBA 
or an RBL. These are not really high end radios by todays standards, but 
they will pull in a lot of signals below 2 mc.  Based on what I've read 
(and only a little actual experience) the lower you go in frequency, the 
more important antenna performance is.  The R-389 will hear very little 
more than an RBA will if your antenna is very good.

Another possibility is to find one of the more modern solly state 
receivers, such as the Watkins Johnson or CEI (Communications Equipment, 
Inc,) receivers. One example is the CEI VLF-354 (earlier) or 357 (later 
with nixie readout). These things apparently have all you need for most any 
signal: selectable bandwidth, plenty of stability, front end attenuator, 
noise limiter, BFO.  You certainly should be able to get one for the value, 
in money or in kind, of a medium-nice R-390A.

Roy



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