Omni antennas have uniform radiation coverage in azimuth. Elevation patterns can be tilted or shaped for null filling. They are used in a wide variety of applications including communications base stations, ENG, MMDS and radar systems.
This section describes linear polarized omnis, including omnis for airborne use. For circular polarized omnis for mobile satellite communications, please see Pages 10-13. For other circular polarized omnis, please see Page 54.
Seavey Engineering designs low-gain omnis as dipoles with chokes on the RF feed line. At low frequencies, discones are employed. For higher gains at higher frequencies, slotted waveguide designs of several types have been developed. In the millimeter-wave bands, biconical antennas with lens compensation are used.
 Model 9540-800 L-band 9° Tilt |
 Model 9356-800 C-band Airborne |
 Model 9845-800 C-band Airborne |
 Model 9143-850 C-band Airborne |
 Model RSA-6 C-band |