Comant CI 121 VHF Communication Our most popular VHF, the CI 121 is similar to our CI 109, only the CI 121 has a smaller diameter whip and is lighter at only 0.5 pounds. Features a tapered glass laminate housing and die-cast Aluminum base. 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-186 MOPS. Similar to the CI 109, the CI 121 is smaller in diameter and lighter at only 0.5 pounds. Features a tapered glass laminate housing and die-cast aluminum base. 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. Applications Single engine piston aircraft for applications of this antenna design. Consult your FBO or installation shop for best application information. Frequencies Covered 118-137 MHz
