Video that shows how to test the shape of my antenna boosters with a laser to make sure the accuracy of parabolic curve. No matter where the beam hit, it would reflect to the antenna.
Refer to http://www.inspirepilots.com/threads/parabolic-aeriel-range-extenders.4703/#post-51530
Refer to http://www.inspirepilots.com/threads/parabolic-aeriel-range-extenders.4703/#post-51530