Re: [K3] Noise from P3

Posted by K5DNL on Mar 23, 2011; 8:10pm
URL: http://elecraft.85.s1.nabble.com/K3-Noise-from-P3-tp6201047p6201760.html

Hello all,

Jim is right the ferrite cores will fix the problem,
Been there done that about two months ago .
Ferrite on all input and outputs.

73 all K5DNL
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--- On Wed, 3/23/11, Jim Brown <[hidden email]> wrote:

> From: Jim Brown <[hidden email]>
> Subject: Re: [Elecraft] [K3] Noise from P3
> To: [hidden email]
> Date: Wednesday, March 23, 2011, 1:31 PM
> On 3/23/2011 10:09 AM, David Pratt
> wrote:
> >   Removing the 2 metre antenna also
> removes the noise.
>
> How far is your 2M antenna from your P3?
>
> A suggestion. Try adding several clamp-on ferrite cores to
> the power
> cable and the BNC, placing them as close to the P3 as
> practical.  These
> should be a SINGLE TURN for 2M (that is, simply clamped
> onto the cable),
> two turns for 6M. IF these cables are radiating the trash,
> the cores can
> help reduce it.
>
> 73, Jim K9YC
>
> 73, Jim K9YC
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