Frequencies Covered
118-137 MHz

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.

Note: Gasket included.

Applications

Single engine piston aircraft for applications of this antenna design.
Consult your FBO or installation shop for best application information.

MODEL- CI 121 VHF ANTENNA
Electrical
Frequency	118-137 MHz
VSWR	2.5:1 Maximum
Polarization	Vertical
Radiation Pattern	Omnidirectional
Impedance	50 Ohms
Power	50 Watts
Mechanical
Weight	0.5 lbs. Max.
Height	18.50 in. Max.
Material	Cast Housing / Fiberglass Whip
Finish	Polyurethane Enamel
Connector	BNC (Female)
Environmental
Temperature	-55ºC to +85ºC
Altitude	50,000 ft.
Airspeed	250 KTAS
Federal Specifications
RTCA Environmental	DO-160D
FAA TSO	C37d, C38d
Gasket
B12607-3	Cork Neoprene