Turnigy (FlySky, etc.) 9X Antenna Booster for 8/9.5mm Stepped Shaft

This is a reflector for any radio with a round antenna with stepped diameters in the shaft. The top hole is 8mm and the bottom hole is 9.5mm and you may have to clean these up to make it fit properly.

The basic premise is that it will reflect radio waves forward and theoretically boost the range. I looked at other range boosters and believe that the designs are wrong. The actual antenna is somewhat shorter than the overall length of the antenna and for a 2.4Ghz frequency, the actual antenn