[Elecraft] Switching Power Supply Recommendations Wanted - Thank you

[Solosko, Robert B (Bob)]

Thank you to everyone who responded both on and off the list - there
were about 2 dozen responses with many suggestions and much good
information (just what you'd expect from the Elecraft community).

The top vote getters were the Alinco DM-330MV, Astron SS-25, the Samlex
SEC1223 and the Gamma HPS-1. From my perspective the HPS-1 wasn't really
in the running - while it was recommended by quite a few people, I don't
need something quite that small and I wanted a power supply that could
provide at least 20A continuously. The choice between the other 3 power
supplies was more difficult since all three were highly rated in the QST
reviews (and an extra thank you to those of you who referred me to the
QST reviews). 

I eventually decided to go with the DM-330MV. While it is more expensive
than the SS-25 or SEC1223, the variable voltage feature and front
terminals gives me the option of using it as a test bench supply.
Hooking it up to my K2, it's very clean on all band from 80m on up. On
160m, there are birdies on the lower half of the band - but the power
cable from the supply to my K2 currently runs right next to the coax and
ground cables and very near the balun connecting the ladder line to the
coax, so repositioning the supply and power wire it should reduce the
problem (and the DM-330MV's adjustment to move the birdies works very
well, but I'd rather not have to have that additional adjustment)... But
the bottom line is that I'm rarely on 160m anyway.

Thanks again for all of the advice and information.

Bob W1SRB



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Solosko, Robert B
(Bob)
Sent: Friday, May 25, 2007 10:04 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] Switching Power Supply Recommendations Wanted

Hi Elecrafters,

	I just sold my big, heavy linear power supply to replace it with
a small, light weight switching supply that I can pack into a suitcase
with my K2/100. Looking at the eham.net reviews, comments on all of the
switching supplies seem to range from "great, absolutely no switching
noise" to "noise everywhere", and everything in between. Given the
sensitivity of the K2's receiver, is power supply switching noise likely
to be more of a problem with the K2 than with some other rigs? Are there
any switching power supplies that you'd recommend that work well with
the K2 (and have little or no switching noise that the K2 would pick up)
and are there any that I should definitely avoid?

	Thanks.

Bob W1SRB
_______________________________________________
Elecraft mailing list
Post to: Elecraft at mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com