Land Mobile Base NMO Antenna UHF 450-470MHz, 5.5dBd gain, 34.5" stainless steel tapered 2.5mm whip, Gold plunger type contact pin. 200W power rating. BR-450 32" stainless steel center load whip Freq: 450MHz - 470MHz 5/8 over 5/8 wave 200W 5.5dBd gain