The Tram® CB base station antenna is constructed out of heavy-duty fiberglass and is an omnidirectional antenna. It stands 18 ft. tall for superior transmission and comes in 3 sections for ease of installation. It comes with a UHF female SO-239 connector and a 50-ohm impedance designed to carry higher powers. The wavelength measures 1/2 wave over 1/4 wave. The antenna is packaged with a mounting bracket and stainless steel hardware. Cable is not included. | Tram | | 18 Ft. CB Base Station Antenna 26 MHz to 31 MHz | White | Best Buy