The CI 268-5 uses the same radome as our multi-function ComDat antennnas. After adding a ComDat combination antenna, many owners like to match the look for their other VHF antenna. This is the perfect way to do it! The CI 268-5 features the same super-tough nickel plated aluminum base plate with integral Nitrile 'O' ring for pressurized applications found on all ComDat models. Truly unique, the CI 268-5 is the only VHF antenna with a built-in notch filter, that allows installation in close proximity to GPS antennas without co-sight interference.