The antenna protects the radio equipment from high voltage caused by thunder lighting. Our High-Performance FRP Gain Vertical Antenna has three pieces joint FRP element structures, Obtain perfect waterproof structure, DC ground structure and other factors that we had shown with images. It seemed like a nice, lightweight, light-duty product that user could fly from their houses without reinforcing the rafters.Users can put it together with the very easy way. The Users can easy to use and set up because we described the detail assembly processes, avoid factors and other. If you want to buy, please feel free to contact via the chat box, message box.