Re: K3S Audio buzz on transmit, especially AM

Posted by Nicklas Johnson on Apr 26, 2019; 6:27am
URL: http://elecraft.85.s1.nabble.com/K3S-Audio-buzz-on-transmit-especially-AM-tp7651148p7651152.html

Again, the problem persists with all inputs completely disconnected and the
mic gain set at 0. And running solely on a battery into a dummy load.

   Nick

On Thu, Apr 25, 2019, 10:10 PM Jim Brown <[hidden email]> wrote:

> 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
>
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