Designed specifically for top mounting on an aircraft. Provides excellent omni-directional pattern coverage for all VHF aircraft communications. It is equivalent to the CI 291 but features a straight tapered stainless steel radiator.

The CI 292-1 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.