PCTEL's MBS base station adapter kit. The MBS adapter 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 in 18 thread mounts. Mounts on 1 – 1.75 in OD masts. Converts any 132 – 512 MHz mobile antenna into a base station.