[TenTec] USB RFI

[Jim Brown]

On Mon,2/15/2016 1:10 PM, Stuart Rohre wrote:
> See if the remaining Radio Shack stores near you have the clamp on 
> ferrite cores, thru which you pass the USB cable.  Slide the choke 
> along the cable to find the optimum attenuation point, then fasten it 
> to that spot with wire ties either side of it to keep it in the 
> optimum position. 

WRONG! A single pass of a cable through a ferrite core is useless at HF, 
and effectiveness has NOTHING to do with position on the cable. And do 
NOT buy ferrites at Radio Shack.

Study k9yc.com/RFI-Ham.pdf

Part numbers and sources of useful parts are in Appendix One.

73, Jim K9YC