The CI 121 VHF comm rod antenna has a small diameter and has a light weight at only 0.5 pounds. This antenna features a tapered glass laminate housing and die-cast aluminum base. It offers standard mounting and appearance to many Cessna communication antennas.
The CI-121 has been re-tested and upgraded to the new RTCA DO-160D environmental requirements and offers the 118 to 137 MHz frequency associated with DO-186A MOPS.