Taurus GP3 NMO to UHF (SO-239) Ground Plane Kit Base ground plane kit, NMO mount to n female connector Max power 200 watts, 20 1/2" (52cm) ground plane radials, 100 mph (48 m/sec) wind load Easy installation on any 2" (5 cm) pole or pipe, NMO mount to uhf female (so-239) connector Includes mounting hardware, converts a mobile antenna with NMO mounting into a ground plane base station Made in Taiwan