Tram 1486 UHF Land Mobile Base Antenna: * 63" tall * Frequency response: 406-512MHz * 6.5dB gain * Heavy-duty fiberglass construction * Includes three 7" stainless steel radials * Impedence: 50ohm * UHF female (S0-239) connector * Mast diameter accepted: 1.81" x 2.44" * Includes bracket