Drone Fans 2pcs Remote Copper Parabolic Antenna Signal Booster Range Extender (Enhanced version) for DJI Phantom 4 3 Inspire 1 Remote Controller Copper signal booster compatible with Phantom 4,3 standard, advanced, professional Inspire 1 transmitter The metal coating is formed to act as a mirror reflector radar energy. Parabolic antenna is in the form of the most frequently used type of radar antenna installation works. Signal Booster consists of a circular parabolic reflector mirror and the light located in the focal points. Note: the remote controller is not included.