Abstract: A motor control device for a radio control system is disclosed. The motor control device is mounted on an object to be controlled so as to adjust a control range in each of forward, braking and backing of the object. The motor control device is provided with a variable reference signal source for generating a backing reference signal and a comparator for discriminating a region of control element on a transmitter side by comparing a braking-backing command signal generated from a drive control circuit with the backing reference signal. The control range can be adjusted by adjusting a level of the backing reference signal of the variable reference signal source.