And I always thought it was just a wire connected to the back! I want to use the correct antenna wire but I read about impedance,Ohms,75 or 300 Ohm wire, baluns,etc. Here's Wikipedia with article and formulas too for this;https://en.wikipedia.org/wiki/Twin-lead .I currently share ota t.v. antenna with stereo. I believe I have a balun with the 2 spade prongs connected to antenna and other end is connected to RG6 down to stereo with another balun of same kind. Is there a way better setup? I want the best reception possible,short of buying amps and such.