PCTEL's MBS base station adapter kit allows a mobile VHF or UHF antenna to be used as a base station. By providing radials, the antenna can be used in areas where a ground plane is not available. Will accept any antenna that utilizes 1-1/8" 18 thread mounts. Mounts on 1 to 1.75" outside diameter masts. Converts any 132-512 MHz mobile antenna into a base station.