Comant CI-121

Overview

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.

Specification

• Frequency: 118 to 137 MHz
• VSWR: 2.5:1 maximum
• Polarization: Vertical
• Radiation Pattern: Omnidirectional
• Impedance: 50 OHMS
• Power: 50 Watts
• Weight: 0.5 lbs. maximum
• Height: 18.50" maximum
• Finish: Polyurethane enamel
• Material: Cast housing / fiberglass whip
• Connector: BNC (female)
• Temperature: -55° C to +85° C
• Altitude: 50,000
• Air Speed: 250 Knots TAS
• RTCA Environmental: DO-160D
• FAA TSO: C37d, C38d
• RTCA MOPS: DO-186A
• Colour: White
• Gasket: C12607-3 cork neoprene