On Tue, 17 Aug 2010 10:06:47 -0700 (PDT), ab2tc wrote: >I have tried clip-on ferrites on >every wire coming out of the router, Clip on ferrites are not effective at HF unless you wind multiple turns through them. Multi-turn ferrite chokes ARE effective. Study http://audiosystemsgroup.com/RFI-Ham.pdf 73, Jim Brown K9YC