200 watts power rating 4 ft. 10 in. tall Heavy-duty, single-section fiberglass construction; max wind speed of 135 MPH 134 MHz to 184 MHz; 5 MHz bandwidth; 4.5 dBd gain 5/8 wave 3 elements; 20-1/2 in. radial length Radiator and coil are hermetically sealed in fiberglass tubing to assure low SWR in all weather DC ground construction allow static dissipation for low noise ratio and maximum lightning protection Vertical polarization with 50 ohms impedance UHF (SO-239) connector Mast diameter accepted: 1-3/16 in. to 2-7/16 in. Includes mounting bracket with three 20-1/2 in. radials