[Elecraft] K3S Audio buzz on transmit, especially AM

[Jim Brown]

On 4/25/2019 8:15 PM, Nicklas Johnson wrote:
> Physically touching the case or grabbing the barrel of the front panel mic
> connector actually does cause the buzz to get just a little softer.

I suspect either a bonding problem or a problem with the wiring of the mic.

> I generally use solar/battery power, though my ground is bonded to my
> utility ground.

I suggest that you carefully study either N0AX's recent ARRL book on 
grounding and bonding, or the slides for talks I've given at Visalia and 
Pacifion.

73, Jim K9YC