The Tram 200 Watt 134 MHz to 184 MHz VHF Black Fiberglass Base Antenna with 50-Ohm UHF SO-239 Connector has a heavy-duty fiberglass construction base, is 4 ft. Tall, and can withstand winds up to 135 MPH. It accepts mast diameters 1-3/16 in. And has an impedance of 50 ohms.
This black antenna comes with three 20-1/2 in. Stainless steel radials, UHF female (S0-239) connector, and bracket. 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. 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. Mast diameter accepted: 1-3/16 in. Includes mounting bracket with three 20-1/2 in. 2 x 2 x 58.75 in. 59 x 3 x 3 in.