The Aerpro CBHD9B 9dBi 477MHz Super Heavy Duty Black Radome UHF Antenna is compatible with all brands of 477MHz UHF CB Radios in Australia and New Zealand. With 9dBi gain, this antenna is best suited for long range communication covering wide open spaces such as deserts, plains and low density woodlands as it produces a much longer but flatter UHF signal compared to lower gain antennas. The benefits of the antenna is the long distances it can cover however it is also means it can be susceptible to interference from obstructions in its line of sight. The 2215mm length antenna is encased in a high quality fibreglass tube and secured to a super heavy duty black coated stainless steel spring. Due to its heavy duty design and weight, the CBHD9B is recommended to be installed on the bullbar of the vehicle, making it suitable for trucks and 4WDs. The antenna is ground independent so it will maintain a stable radiation pattern. The elevated feed design helps raise the radiation pattern above the vehicle roof and other obstructions to ensure high performance when mounted on a bullbar. It is fitted with 4.5 metre RG58 coaxial cable which is pre-terminated with an FME connector making it easy to install through the firewall grommet in vehicles. An FME to UHF PL259 screw on adaptor is also included as well as a mounting spanner for hassle-free installation. Built sturdy for the Australian outback, the CBHD9B is a good all-purpose town and country antenna.