Circular Polarized Omni Antenna Definition:

Quadrifilar Helix or Crossed, Orthagonal Dipoles. Gain is typically under 4 dBi as some ground gain is realized due to ground reflection at an angle determined by height over ground. Eggbeater or Crossed Dipoles, full wave loops or 1/2 wave dipoles fed 90° out of phase produce horizontal polarity at the horizon but transforming to circular polarization as the angle above the horizon increases. Horizontal gain is height dependent an can also be increased by stacking.

Model	Freq Range	Gain (dBi)	Polarization	Size	PDF Manual	3D Model
CPO233	200 to 320 MHz	1.0 dBic