Frequencies Covered Designed specifically for mounting to the underside of an aircraft providing excellent radiation coverage for air-to-ground VHF communications. Bent configuration makes it ideally suited for helicopters and low wing aircraft. The CI 122 has been re-tested and upgraded to the new RTCA DO-160D environmental requirements and offers 118 to 137 MHz frequency associated with the DO-186A MOPS. Note: Comant Antennas no longer come with a gasket or template. Must order PN 09-05579 separately. Applications |
MODEL- CI 122 VHF ANTENNA | |
Electrical | |
Frequency | 118-137 MHz |
VSWR | 3.0:1 Maximum |
Polarization | Vertical |
Radiation Pattern | Omnidirectional |
Impedance | 50 Ohms |
Power | 50 Watts |
Mechanical | |
Weight | 0.75 lbs. Max. |
Height | 18.50 in. Max. |
Material | Cast Housing / Stainless Whip |
Finish | Polyurethane Enamel |
Connector | BNC (Female) |
Environmental | |
Temperature | -55ºC to +85ºC |
Altitude | 50,000 ft. |
Airspeed | 350 Knots TAS |
Federal Specifications | |
RTCA Environmental | DO-160D |
FAA TSO | C37d, C38d |
Gasket | |
B12607-3 | Cork Neoprene |
The antenna replaced the existing Cessna antennas and mounted perfectly on my C182P using the same mounting holes and the mounting profile was a match. There was no touch up paint was required.
Comant CI-122 VHF Comm Antenna BNC
Great!
Comant CI-122 VHF Comm Antenna BNC
No way to tell I just install
Comant CI-122 VHF Comm Antenna BNC
Fixed my issue. Shipped fast and was damage free. Easy install and clean.
Comant CI-122 VHF Comm Antenna BNC
Quality as expected !
Comant CI-122 VHF Comm Antenna BNC
Ordered, arrived, installed works as advertised...
Was having trouble with reception ... had an old antenna and decided to replace. The clarity has changed completely. Wish I had done a lot sooner.
Works great as advertised and expected. Quick and easy to install.
Fits exactly as advertised
From my previous product review, the previous set up I had with the top mounted VHF, it was too close to the sensitive ACK-406 (updated and enhanced ELT). The RMI radio magnetic interference from the transmissions of VHF so close into the ELT antenna caused the red power light of the remote on the ACK to come on. Ostensibly this is why we were gettting so much static in our headsets when transmitting. No static for RX of VHF. Also I learned that if you have GPS nav as in a Garmin navigator, an interpheference test needs to be done. Top mounted VHF with top mounted GPS antenna created a fail situation for me. The bottom mounted Ci-122 solved all my issues. Could not be more pleased.
Please note, Aircraft Spruce Australia'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 Australia 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.
The total height is 18.5 inches long, as the CI-122 is a bottom mount antenna it is bent.
Per the manufacture it is 8.75" from the base of the antenna to the bend.
No, this is the price for the antenna only. Connectors and BNC connectors are sold separate.
For part number 11-17922 the length of the screw depends on the mounting location. The mounting holes are .173 diameter and countersunk AN hardware is recommended.
The CI-122 (11-17922) does require a ground plane if mounted on a fiberglass airplane. The height of the antenna is the required diameter of the ground plane. Aircraft material does not change the VSWR of the antenna.
On certified installations, we recommend using either RG400 or RG142.
This has a footprint for four (4) holes.
Correct, Comant recommends forming a seal using part # 09-04612 which is a Chemseal sealant.