[Elecraft] K3 Power Supply

[Jim Brown]

On 3/25/2012 10:46 AM, Bill Miller wrote:
> What is recommended for a K-3 power supply? (New owner)

Any decent supply that regulates to about 13VDC will work well provided 
that it is not electrically noisy.  I've used Astron linear supplies, 
and a compact PowerWerx unit rated for 20A. The latter is  switcher, but 
I haven't found any electrical noise.

For many years,  all of the 12V rigs I've owned, and all of the 12V 
accessories on my operating desk, have been powered by a big Costco deep 
cycle battery that is float-charged by an el-cheapo regulated 10A 
switching supply that I bought for $10 at a hamfest about ten years ago. 
That switcher was REAL noisy, but I was able to tame it with a few 
capacitors and chokes on both AC and DC wiring.  10A is plenty to keep 
up with even the most serious contesting.

73, Jim K9YC