[Elecraft] KX3/KPA100/Powerwerx Revisited

[Walter Underwood]

Are the fans on those power supplies running? Both of those power supplies have fans on the back.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jun 12, 2022, at 12:51 PM, Jim Ruff via Elecraft <elecraft at mailman.qth.net> wrote:
> 
> Thanks everyone for your quick responses.  So far, none of the suggested solutions have worked, so I hooked the KPA100 up to a different power supply, an Alinco DM-330MV, and I had the same whirling noise, only not quite as loud.  
> 
> This leads me to believe that something in the KPA100 is causing some kind of line noise to the power supply.  Is there a fix for this?  If not, the noise doesn't really bother me, but is this noise affecting my signal when I TX?  That is my real concern and I should have made that clearer in my first email.
> Thanks,Jim W7JHR
> 
> 
> 
> Sent from Yahoo Mail. Get the app
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