Model AR-22R Antenna Rotor is designed to support and rotate the largest television antennas. The rotor will support stacked arrays and deep fringe area antennas. AR-22R is not intended for large Ham beams. Large Ham beams may present a sufficiently high wind resistance to rotate the antenna without being energized. This will have the effect of changing the AR-22R synchronization. For very windy areas or large beams, the CDE TR-44 or HAM-M rotors are recommended. The AR-22R is rated to support a dead vertical weight of 150 pounds, has 500 inch pounds of motor stall torque and resists an overturning moment of approximately 4000 inch pounds without guying. The control box will control to within 6° accuracy. The rotor is lubricated for long life and is suitable to approximately —15°F. The clicking sound when rotating is normal.