Frequency: 317-338MHz, Gain: 5dBi, 300MHz omnidirectional antenna designed for 317-338 MHz SCADA, UHF business band, General Mobile Radio Service, and Family Radio Service 2-way “walkie-talkies”, public safety band. 300 MHz omni directional antenna series features an integral N-Female type connector. Mounting is easy with a dual u-bolt mast mounting kit, allows installation on masts up to 2.5″ in diameter. The omnis are DC grounded for lightning protection. Fiberglass radome for durability, aesthetics and long service life. It is designed for all weather operation.