[Elecraft] K3S Audio buzz on transmit, especially AM

[Jim Brown]

On 4/26/2019 10:44 PM, donovanf at starpower.net wrote:
> Y our emails leave the impression that your approach
> isn't very methodical.

Yes, but that lack of methodical troubleshooting is the result of most 
hams being weak on the fundamentals of fields and passive IM, instead 
seeing problems in the light of RFI and mythical concepts like "ground 
loops."

The two causes I've come around to smelling in this problem are passive 
IM (which Frank reminded me of) and power-related fields. And Frank's 
advice is right on.

73, Jim K9YC