Larsen 144-174 MHz Base-Loaded VHF Mobile Antenna Hard Mount Kit (17' RG-58 NMO Connector) Base loaded 3dB gain antenna complete with 3/4" hole mount, cable, and connector. Maximum Power (Watts): 200 Whip Length (In.): 51 1/2" Whip Material: 17-7PH Stainless steel "Kulrod" finish