This issue came up a long while ago. At that time, having some issues with RF 
in the shack too, (dipole runs right over the house somewhat) I went to all LMR 
240 low loss, double shielded coax. Things are pretty quiet now. 

Sent from my iPad
Chuck, KE9UW 
(Jack for BMW motorcycles)

On Mar 1, 2013, at 1:36 PM, "Eric Swartz - WA6HHQ, Elecraft" 
<[email protected]> wrote:

> We changed to a better quality BNC jumper cable for the P3 to K3-IF 
> connection approximately Nov 1st of 2012. P3s shipped after that should have 
> the newer cable.
> 
> If you hare having problems with an earlier cable, contact our parts or 
> support guys ([email protected], [email protected]) and we'll fix you 
> up with a replacement.
> 
> Of course even more expensive double shielded cables etc can reduce leakage 
> into the P3 If even more. But those are usually only helpful if there are 
> extremely strong local interfering signals (nearby switching power supplies, 
> monitors etc.)
> 
> 73,
> 
> Eric
> elecraft.com
> 
> On 3/1/2013 6:16 AM, Fred C. Jensen wrote:
>> Elecraft didn't make the cable, they bought it, or more likely 1,000 or more 
>> of them.
>> 
>> 73,
>> 
>> Fred K6DGW
>> 
>> Bill Clarke <[email protected]> wrote:
>> 
>>> As a replacement for the faulty Elecraft cable I am using a real
>>> Mil-Spec cable. When I receive the replacement cable from Elecraft I
>>> will compare it to the Mil-Spec cable for quality before using it. I'll
>>> let you know what I think of it and how well it works.
>>> 
>>> 
> 
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