HAM IV is the most popular rotator in the world for obvious reasons.  It’s solidly constructed, has been time-tested and proven for over twenty years.


HAM IV  is for medium communications arrays up to 15 square feet wind load area (7.5 sq. ft. with mast adapter). It has 800 inches-lbs. turning power and 5000 inches-lbs. break power.


North or South center of roation scale on meter, low voltage control, mast size 2 1/16”. 110 VAC


Wind load capacity (inside tower)                                    15 square feet

Wind load (w/ mast adaptor)                                               7.5 square feet

Turning Power                                                                        800 in-lbs.

Brake Power                                                                           5000 in lbs

Brake Construction                                                               Electric Wedge

Bearing Assembly                                          Duel race/98 Ball bearings

Mounting Hardware                                        Clamp Plate/Steel U bolts

Control Cable Conductors                                                   8

Shipping Weight                                                                    26 lbs

Elective Movement (in tower)                                           2800 ft.-lbs..