[Elecraft] SOLVED: K3: TX audio setup

[Franki ON5ZO]

Once again great and prompt support from both the Elecraft list as well as 
microHAM. Thank you all!

Executing W4TV's advice solved the problem:

> Elecraft connect pin 7 (mic ground) and pin 8 (PTT ground) in
> parallel and use a single RF choke to ground.  This causes a
> "pin 1" common mode RFI problem because PTT and microphone
> circuits are "mixed."

A single cut gave me pristine audio in the monitor and on the air as 
confirmed by a local volunteer. Settings now:
MIC GAIN = 30, COMP = 20, TX EQ 0.05=+6, 0.10 = +4, 0.20 = +2, 1.60 = +2, 
2.40 = +4, 3.20 = +6. I might tweak the EQ some more later.

TNX again y'all!
- Franki ON5ZO = OQ5M