I've generally thought "higher is always better" with wire antennas, but EZNEC is showing me something interesting about my 102 ft. doublet: to wit, at the current height of 45', EZNEC shows a considerable lobe straight up in the air on 20 meters. And the higher I set the height, the more energy seems to be going straight up into the air. And when I lower it to about 30' the vertical lobe diminishes from what it is at 45'. I also notice that when I extend my doublet to 130', I get almost no vertical component at all on 20 meters. If that's indeed the case, I may just have to borrow my neighbor's tree.... So is higher not always better? Or is it just that I don't know how to use EZNEC properly?