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Re: [TenTec] which power supply…station efficiency

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] which power supply…station efficiency
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 13 Dec 2013 20:55:22 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
I took a slightly different approach: I built a new regulator board for my RS-35M linear supply that allows for remote voltage sensing. Thus, I regulate right at my distribution point, *not* at the supply output terminals. This has reduced any voltage sag to my O II by quite a bit. I've also increased the regulated voltage to 15.0 VDC which has reduced power output variation across bands. Max output remains 100 W, but now only drops to 87 W on 10 m, slowly increasing to 100 W on 80 and 160 m.

Kim N5OP

On 12/13/2013 10:40 AM, denton sprague wrote:
Ok..got some nice replays on all of this..
Currently have one of my Astron 35M's feeding either the Omni 7 or the Eagle from a 
power strip….this should do until I have done more research on a more efficient 
power supply situation.
I would prefer to have separate power supplies for each of the hf rigs just to get 
some isolation between them rf wise….has this been a problem with anyone else?
Have been using clamp on ferrite chokes on the dc line from the strip to the 
rigs but can't tell if they are really doing anything.

On Dec 8, 2013, at 8:14 AM, denton sprague <denton@oregontrail.net> wrote:

I am upgrading a bit here…
got a new full sine wave ups coming with two aux battery packs to replace my 
old cyberpower 3000 ups.
Ups has AH rating of 336 and each aux battery pack is 864 AH….
I am also looking at replacing my Astron 35m power supplies with more efficient 
switching power supplies or running my TT Eagle or my Omni 7 and various 
sundries that use 12 vdc with a battery pack, charger and a battery booster 
when needed.
So my question is…what switching power supplies are my fellow hams using and 
how well do you like them?
I am aiming for efficiency, rf quietness and flexibility.
Other than the station, the ups will be used to fire a smaller flat screen tv, satellite 
receiver, iMax and a lamp….nothing total over 500 watts draw…at least to my 

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