AS9100 Rev D/ISO 9001:2015 Certified
Serving the Aviation Industry since 1973
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CI 211 VHF Communications
Frequency 118-137 MHz
(DAI Part# CI211)
Optimum antenna for high-performance jet aircraft. Only 8.25" high, yet provides good performance without the added drag of a taller blade-type communication antenna. Skydrol and rain erosion resistant. The optional CI 211-L offers leading edge protection as shown in outline drawing. The CI 211 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.

SPECIFICATIONS
Electrical
Frequency 118 to 137 MHz
VSWR 2.5:1 maximum
Polarization Vertical
Radiation Pattern Omnidirectional
Impedance 50 OHMS
Power 30 Watts C.W.
Mechanical
Weight 1.6 lbs. maximum
Height 8.25" maximum
Material High density polyurethane
Finish Polyurethane enamel
Connector BNC (female)
Environmental
Temperature -55° C to ± 85° C
Altitude 50,000'
Air Speed 573 Knots TAS or 0.88 Mach @ 45,000'
Federal Specifications
RTCA Environmental DO-160D
Environmental Category [D2X]ACB[R(C,C1)U(F,F1)]
XWFDXSXXXXX[XX]X[XXXX]XAX
FAA TSO C37d, C38d
RTCA MOPS DO-186A
Connector
BNC Standard
Color
White Standard
Gasket
Gasket C21104 cork neoprene–standard
Leading Edge Protection
Leading Edge Protection CI 211-L
Comant Industries
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