Reliable Performance: Rated at 250 watts and 3dB gain, you can expect years of continuous service. Rugged Construction: The radiating elements are constructed of copper & copper alloy. They are encased in a fiberglass radome for total environmental protection. Weatherproof: The fiberglass radome is ultraviolet inhibited. The heavy wall aluminum mounting sleeve is epoxy coated for superior weather protection. Lightweight: These antennas are lightweight at less than 5 lbs. but are designed to easily withstand winds of over 125 MPH. Simple installation: Using the optional BSMNT2 mounting kit, installation takes only minutes.