[Elecraft] KX3 high pitched hum on headphone jack

[Don Wilhelm]

The Astron 6 amp linear supply comes to mind.  There are some good 
switchers out there, see the ARRL Product reviews for an independent 
assessment.

73,
Don W3FPR

On 6/26/2013 6:24 PM, kg4olw wrote:
> Just as an update I am trying to tune in a very weak signal am radio station.
> Another thing i noticed today while messing around is that besides noise
> from the pc, I also experienced additional noise when it is plugged into my
> bargain bin pyramid 25amp switching power supply. I never noticed this on
> HF, so maybe it is just more pronounced on AM. Any suggestions on a good
> linear power supply that will also support the draw of the kxpa100?
>
>
>
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