Maryland 500 watt wide band 26-28 MHz vertical base load antenna is designed to provide years of service. Features tuning rings for adjusting SWR, weather channel compatible, 5/8 wave, 50 Ohms impedance, a 3/8-24 threaded base and AC4 stainless whip. Antenna length is 57.87 inches tall. Recommended coax cable, less than 13 feet