I plan to build one of the K6STI yagi's that Holl_ands describes here: http://imageevent.com/holl_ands/yagis/k6sti I would prefer to build it with straight dipole rather than with a folded dipole. The folded dipole has the advantage where one can simply use a conventional 300 ohm to 75 phm matching balun whereas the conventional dipole requires a 1:1 balun. I can't find any commercial sources for a 1:1 balun and I don't know how to build one. What is the penalty for using a 4:1 balun with a dipole feed? I'm looking to acquire four high vhf stations (7, 9, 10, 13) with this antenna. Thanks!