[Elecraft] QSK CLICK

[W3FPR - Don Wilhelm]

Hi,

For anyone wanting to add the 100K resistor on the /MUTE line, there is no 
need to remove an IC - the trace from pin 17 of the MCU runs over to C23 on 
the front side of the control board  - that trace can be easily cut and the 
resistor added from C23 to U6 pin 17 on th eback of the board.

73,
Don W3FPR

----- Original Message ----- 

> Fred and others,
>   I've lost track of who originated what mod to eliminate that QSK click 
> that started for me when I installed the DSP option into the K2.  What 
> provided a good enough solution for me was the 100K resistor in series 
> with pin 17 /MUTE of the MCU U6 on the control board.  Why this worked I 
> can't tell you for sure.
>   The down side is that I think I had to remove a soldered IC so I could 
> cut a trace and install the resistor.  Getting the IC out was no problem 
> for me since I have the appropriate vacuum desoldering equipment and 
> experience to do it without hazard.  Then too maybe I'm confusing this mod 
> with another mod.
>   Under some conditions - maybe 1-3% of the operating time - a light 
> thumping remains in my full range headphones for short periods from 
> unknown causes.  It's so transitory that I never did anything further 
> about it.