Comet Original GP-1 146/446 MHz Dual Band Heavy-Duty Fiberglass Vertical Base Antenna - 4' 2", SO-239 Connector Dual Band Base Vertical 146/446MHz Gain: 146MHz 3.0dBi, 446MHz 6.0dBi VSWR: 1.5:1 or less, Max Power: 200 watts SSB/100W FM Length: 4 2, Weight: 2 lbs. Connector: SO-239, Construction: Heavy-duty fiberglass