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Comant VHF Communication Antenna CI-121
MFR Model# CI-121
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Overview
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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. |
Specifications
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 | 19 in |
Material | Metal Housing / Fiberglass Whip |
Finish | Glossy White |
Connector | BNC (Female) |
Gasket B12607-3 | Cork Neoprene |
Federal Specifications | |
RCTA Environmental | DO-160D |
FAA TSO | C37d,C38d |
Applications
- Single engine piston aircraft for applications of this antenna design.
- Consult your FBO or installation shop for best application information.
Reviews
Like the other Comant antenna I have, this one is well built, finish is perfect. I’m still building the plane so will report results when it is installed and operational.
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
My mechanic told me to buy this one for the 182p after the previous one had cracked through the middle. He put it on in 5 minutes and its great. Does the job.
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
COM1 transmission was very weak. Replace both antennas (COM1 &2), much improved performance on my C172N. The antennas were an exact fit as the originals.
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Easy install and seems to be well-made
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Perfect replacement of my deteriorating Cessna antennas at a reasonable price.
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Not installed yet but exactly as advertised.
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Works as advertised
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Verified Purchase
COMANT CI-121 VHF COMM ANTENNA BNC
Thank you
Q&A
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
Per the manufacturer: This antenna is designed for use on single engine aircraft. For twin engine aircraft a blade type antenna is recommended.
Please see the documents tab on this page for length and mounting information.
Yes this is will work with the KX155 but only for the Comm part of the unit, for the Nav portion Nav please use part number 11-15700.
Yes, this antenna can be used only for the COM portion.
There is no application guide for this antenna showing which specific aircraft it fits. It is FAA TSO approved for use on certified aircraft. Please check with your A&P to detemrine if it can be legally installed.
No. This does not include those documents.
It will work for the COM portion of the radio.
Hardware is not included.
