[Elecraft] [KX3] KXPD3 intermittent keying

[Cady, Fred]

Yes, the picture is not great. The pin is totally shiny (it is a ground
surface) except for the little end on the right in the picture. 

-----Original Message-----
From: hawley, charles j jr [mailto:c-hawley at illinois.edu] 
Sent: Wednesday, November 14, 2012 11:27 AM
To: T Gahagan
Cc: Cady, Fred; elecraft at mailman.qth.net
Subject: Re: [Elecraft] [KX3] KXPD3 intermittent keying

The picture of the pin seems really dark...is it really shiny? Just the
lighting? I need to look, but I think my pins are very shiny, and I
don't remember any tapered end (they are late issue).

Sent from my iPhone
Chuck (Jack)

On Nov 14, 2012, at 10:55 AM, "T Gahagan" <wa7u77 at gmail.com> wrote:

> The website should be www.ke7x.com
> 
> -----Original Message-----
> From: Cady, Fred
> Sent: Wednesday, November 14, 2012 9:12 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] [KX3] KXPD3 intermittent keying
> 
> My KXPD3 started to give some intermittent keying.
> 
> Here is my theory:
> The connection between the paddle arms contact to the ground that 
> needs to be closed to complete the circuit is through the pivot pin at

> the back of each paddle arm. The pivot pin has one end that is 
> necked-down and has not been ground to a bright finish. In my paddle, 
> that end was in the bottom and, I believe, was making intermittent 
> contact. I reversed the pins, putting the shiny end down and, so far, 
> that seems to have cured the problem.
> I have a picture of the pin in question on my website:
> www.kex.com and click on KXPD3 Paddle Intermittent
> 
> Cheers,
> Fred KE7X
> 
> Fred Cady
> "The Elecraft K3: Design, Configuration and Operation"
> 
> 
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