[Elecraft] KPA500 Noise While Off

[Jim Brown]

On 6/27/2018 10:37 AM, Richard Wade wrote:
> If I had to venture a guess, I would say that somehow the unpowered KPA500
> was picking up noise on the shack wiring.  Very strange. Is that possible??

It is if equipment in your shack is not properly bonded together, and to 
house grounds that are also properly bonded together. Study N0AX's 
recent ARRL book on the topic, to which I contributed, or the slides for 
a tutorial talk I've done at several hamfests.

http://k9yc.com/GroundingAndAudio.pdf

73, Jim K9YC