MFJ-1401 MFJ1401 Original MFJ Enterprises 2-M Vertical Ground Plane Kit The MFJ-1401 converts most mobile antennas into a ground plane base station antenna. 200 Watts. Accepts VHF/UHF mobile antennas with PL-259 connector. Includes stainless steel mounting hardware, two hose clamps, allen wrench, and four 20.5 inch radials. Easy install on any 2 pipe with clamps or mounting holes.