https://www.thingiverse.com/thing:2497461 Helix Antenna for 5.8 GHz

https://www.thingiverse.com/thing:858112 Helix Antenna for 5.8 GHz

https://www.thingiverse.com/thing:367500 Helix Antenna for 5.8 GHz

https://www.thingiverse.com/thing:4720600 Helix Antenna for 1.7 GHz https://github.com/sgcderek/dsgc-helix-scaffold

https://sgcderek.github.io/tools/ATA.html Calculator for asymmetric turmstile antennas