[Elecraft] K3 Receive De-sense Problem

[Richard Fjeld]

I have found the center conductor on certain PL-259 plugs is slightly smaller than others. They make a marginal contact with the SO-239 socket. Sometimes intermittent. The trouble it causes can be hard to identify.  
 
I test for light friction/rubbing when I insert a PL-259 plug. If doubtful, I put a spot of solder on the tip, and file it down until it rubs without force going in. 
 
Dick, n0ce



  




 
> Date: Fri, 13 Mar 2015 05:35:39 -0700
> From: fhunt at bvu.net
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 Receive De-sense Problem
> 
> I had those exact symptoms, except with a different radio and band. (IC746 on
> 2 meters).
> The problem was a coax / coax connection.  I replace the defective piece of
> coax.
> I no longer trust "finger tight" connections.  I use a small pair of
> ignition pliers to gently snug things up.
> 
> Frankie
> K4TEN
> 
>