I'll give that a try.  Believe it or not, I worked TX5K on 20m RTTY while 
thumping the case during my exchange transmission.

--- On Sun, 3/3/13, Don Wilhelm <[email protected]> wrote:

From: Don Wilhelm <[email protected]>
Subject: Re: [Elecraft] K3 Erratic output power
To: "Wes Stewart" <[email protected]>
Cc: "Elecraft Reflector" <[email protected]>
Date: Sunday, March 3, 2013, 7:11 PM

Wes,

I believe Elecraft has already implemented a fix for that in later K3s 
(starting about a year ago) - at least there was talk about doing it and 
supplying one 2D connector that was different then the others (with threads 
removed from thee hole).
Removing the threads from the center hole of the 2D connector eliminates the 
dependency for first tightening the screw (really tight) into the 2D connector 
and then tightening the standoff (without loosening the screw).

So if you want to fix yours, drill out the center hole of the 2D connector so 
the 1/2 inch screw can pass through it (1/8 inch drill bit).  The screw is then 
tightened when the standoff is added to the end of the screw.

Be certain to hold the 2D connector in a vise or otherwise secure it while 
drilling so it does not spin and cause injury.

73,
Don W3FPR

On 3/3/2013 8:45 PM, Wes Stewart wrote:
> Has anyone come up with a permanent fix for the erratic output power problem? 
>  I'm not talking about the 100W PA issue, but the issue "solved" 
> (temporarily) by loosening and re-tightening the screws in the metal standoff 
> on the output board near the coax connector.
> 
> According to Murphy's Law, mine failed during the DX contest and the chase 
> for TX5K QSOs.  The screw technique worked for awhile but then I had to 
> resort to tapping on the top of the case near the connector.
> 
> Maybe Elecraft can offer an optional hammer to be used for this purpose?  
> (K3HAMMMER?)
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