My operations are encouraging me to finally learn about antenna modeling. The reason for this is that I don’t think that I’m doing as well as I should on 20 meters. I’m thinking that’s because I’m using a 66-ft., i.e. a full-wave, doublet in an inverted-V configuration and that might have some weird antenna pattern. Perhaps if I modeled the antenna, and could get an idea of the pattern, I could orient it in some way that will give me better result. That, or just come up with some ot...