[Elecraft] K3S Audio buzz on transmit, especially AM

[Jim Brown]

On 4/26/2019 7:48 PM, Frank Krozel wrote:
> Try switching to a linear supply?

No, ALL power supplies with cap input filter have harmonics. But the 
problem is FAR, FAR larger than equipment in the shack.

Nick -- what kind of mic do you use with your rig? Is it an electret or 
a dynamic?  Another way of asking -- do you have turn on bias to make it 
work? Does the  buzz get worse with the mic plugged in? Does turning up 
the mic gain make it louder?

73, Jim