Thanks everyone for the replies! It is very helpful, and I do appreciate it. The SV1BSX site is great, and the visualizations really helped me understand how circular polarization works.

Thanks especially Zach for letting me know about M2 Antennas using the relay at the feedpoint. That's also a good point about having to cut impedance transformation lines, even if I did use a physical 1/4 wave offset.

I may build something to switch between both linear and circular polarizations. I'm hoping to build the antennas in time for Field Day, so I can do a satellite demo for my club.

Thanks again, and I hope to be able to work you on the sats soon!

73, Brady AC0XR