[RFI] CAT 3 Cable?

[Jim Brown]

On Fri, 18 Jun 2004 08:19:49 -0500, Jim Brown wrote:

>I am able to achieve  2-6 S-units of suppression of these components 
>with multi-turn chokes wound around some  big clamp-on #31 ferrites. 

Reading the latest (July) QST, I see that I'm not alone in recommending this 
technique. See "Workbench" on pages 54-55, with a photo of about 10 
turns of coax wound around a toroidal core. The author hasn't quite figured 
out how multiple turns moves the effective range of the choke down in 
frequency though. :) 

Jim Brown  K9YC