SteveO232 wrote:
I'm trying to throw together a helix antenna, similar to one shown
he
http://www.antenna-theory.com/antenn...ling/helix.php

I'm trying to get it to have circular polarization, but it deviates
away from that pretty quickly away from the main beam. If my receive
antenna is also circularly polarized, is there a way to estimate the
polarization mismatch loss based on how skewed the polarization is?
Like if its elliptically polarized, how can you figure out how much
power a circularly polarized antenna would receive from this?



I use those daily. There are better forms of helical that are much
cleaner off-axis.