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
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