I recently installed an EF-Quad in my yard in Northern CA. I have the matchbox end attached to the top of my chimney (19ft up) and the other end attached to a fiberglass pole about the same distance up in the air. My shack is in my garage. I have about 50ft of coax (RG-8X) that goes from my rig to the antenna. My question is, when I tune down to 10M and when I transmit, my PC speakers make a LOT of noise. Obviously this is RF coming back down the coax braid. How do I resolve this? Can I attach a wire to the ground side on the matchbox that will dangle down vertical (say a 1/4 wave of some freq?) so the RF is emitted from that and not the coax? Can I loop the coax? Not sure if anyone else has had this problem.