RV Magnet Mount Antenna Cell Phone Booster 50 Ohm Amplifier SMA Male Connector DescriptionDesigned as a vehicle exterior antenna. Multi-band versatilityWorks with 50 Ohm amplifiers and accessories. Easy to install 12-inch Magnet Mount AntennaHigh gain output omni-directional antenna. Removable - transfer from one vehicle to anotherUp to +6.1. Omni-directional, Weatherproof. Made of stainless steelRequires Metal Mount Plane (Minimum 3.5 in. Diameter)The Wilson 311125 (formerly 301125) 50 Ohm 12-inch Magnet-Mount Antenna is a multi-band antenna that features up to 6.12 dB of gain. It is designed to be used with one of our amplifiers. The Wilson 311125 antenna is omni-directional which allows it to receive signal from all directions. Application/Usage:Designed to be used as an outside antenna in any vehicle with steel exterior including cars, pickup trucks, vans and SUV'sCompatibility:Works with 50 Ohm amplifier and accessoriesSupports all carriers transmitting at the following frequency bands:700-800 MHz, 1.9 dBi Gain824-894 MHz, 5.12 dBi Gain880-960 MHz, 3.1 dBi Gain1710-1880 MHz, -4.0 dBi Gain1850-1990 MHz, 6.12 dBi Gain2110-2170 MHz, 2.3 dBi Gain