FMUSER Circular Polarized Omnidirectional Outdoor FM Antenna Jampro Omni FM broadcast Antenna for LPFM Radio Station 350w Power CP100 circular polarized FM antenna is a new anenna designed for FM radio stations, using with FM transmitters up to 300~500watt. Its frequency range is adjustable by scales from 88~108mhz. The double crossed dipole antenna with circular radiation offers the possibility of simultaneously utilizing vertical and horizontal polarization for better coverage especially in urban areas.