75mhz been gone for a long time now. Easier to go the 2.4mhz TX &RX System. May upgrade your servo & motor maybe a Lipo battery. You'll be fine. Its your kid. Get a cheap system like a Flysky FS-GTB 2.4mhz, you can find the on EBay approx 40-50 bucks. Good luck!!! 75mhz is ancient!!!