I've got 2 Mix31 ferrite beads with 4 winds each on my SOTAbeams Bandhopper 40/30/20 coax feed, another before the coax feeds the KXPA100 and another just before the KX2 - as well as ferrites on power cords and audio/CAT cables connecting the rig. If that's not enough - ouch! BRET/N4SRN -- Sent from: http://elecraft.365791.n2.nabble.com/