[Elecraft] RF in Microphone

[Don Wilhelm]

Jim,

I would suggest that you first try to reduce the RF coming into the 
shack.  Do a little work on your antennas - better baluns for instance, 
and make sure all antenna connections are tight.  Refer to Jim Brown 
K9YC's paper at http://audiosystemsgroup.com/RFI-Ham.pdf for assistance.

73,
Don W3FPR

On 3/26/2017 12:31 PM, Jim Kutsch wrote:
> I am a new K3S owner and very pleased. However, on SSB, I am getting reports
> that my audio is distorted sounding like RF is getting into the microphone.
> I'm using a Heil PR-781 with the XLR3 to 8-pin microphone adapter cable. I
> had some RF microphone issues earlier using the PR-781 with a KX3 but a
> better shielded mic cable and a common mode choke resolved it. Any
> suggestions before I go in search of a different mic? Also, any
> recommendations for a boom mount microphone that would be a better choice
> for the K3S than this PR-781?