Hy-Gain AR-303 series light duty rotator and controller combo kits are designed to turn and accurately position the largest TV antenna and most small VHF and UHF ham radio beams. They may be used with up to 280 ft. (84M) of 20AWG 3 conductor cable. The rotation of the drive units is synchronized with the position of the moving dot of the control unit. This is accomplished by the use of highly accurate synchronous motors. The connecting cables between the control unit and the drive unit carry only safe, low-voltage power when the operating cycle is activated by turning the control knob. The rugged, heavy-duty rotator is built in a weatherproof, one-piece cast aluminum housing that has precision metal gears and steel thrust bearings for durability. The combos include one rotator, one controller, mounting clamps, and all necessary hardware. The AR-303X models are the same as the AR-303, except that they are rated for 220 and 240 V.