[Elecraft] ASTRON RS-20A

[Earl W Cunningham]

Floyd, K8AC wrote:

"In my experience with switching supplies, the problem has been not with
"hash" but rather with discrete unstable signals that show themselves on
160 meters and down into the broadcast band."
==========
No matter how well filtered they are, all switching power supplies
radiate to some extent.  If the receive antenna is close to the receiver,
or with "tuned" feeders, then the "hash" or "birdies" will be stronger. 
This interference is even worse as you go down in frequency and, as a
low-band DXer, I shy away from any switching supply.

It seems that, as time goes on, more and more of today's ham gear runs on
13.8 VDC.  I recently bought a new Astron RS-50M from a non-ham supplier
named "Aventrade" for the bargain price of $209USD ($239 to $259 from the
ham suppliers).  Aventrade has a Web site, but I don't have the URL
handy.  They also offer RS-20s and RS35s at bargain prices.

The RS-50M replaced my RS-20A (sold) and MFJ-4322 (currently my backup)
and now powers all of my DC equipment effortlessly, and no need to worry
about any interference from it.  I'm very pleased with it.

73, de Earl, K6SE