What is the difference between the Basic and Vex controls?
The Basic control is 2 radio controlled relay boards controlled by 2 small separate transmitters. These are all on the same radio frequency with different operation codes (kinda like a garage door opener). This can provide forward movement for one or both sides, or reverse movement for one or both sides, but not at the same time. These movements either have the motors full on or off. Also, you need to be a away from any other sets of Basic controllers (couple hundred feet) or they will make the other one not work when someone else is transmitting too close by. The Vex radio is a 6 channel hobby transmitter on the 75mhz ground frequency range using a receiver to control 2 electronic speed controls. The transmitters will be on different frequencies so you can play next to another crawler. The speed controls allows the motors to move very slowly, and up to full speed as you want. Also, you can have one side running forward and the other side running reverse which the basic controller cann