The Calsense model LMR-400-DB antenna cable is ideal for increasing the range of your spread spectrum radio network when used in conjunction with a Calsense Stick or Yagi antenna that is less than 100' from the controller. It is a UV resistant, watertight, polyethylene-jacketed cable designed for 20-year service outdoor use. Made for easy installation and use, it will help ensure the best service life possible.