I just picked up a LDG z100+ to play around with some wire antennas. I also have a 20' crappie pole on the way. How do I decide on a balun/unun? 1:1, 4:1, 9:1 They are cheap enough Ill probably end up get a few. I use a 891 and plan do try building mostly endfeds because I don't have long sections of feed line, yet.