The HAM-IV is the most popular rotator in the
world! It is designed for medium communications arrays of up to
15 square feet wind load area. New low temperature grease
permits normal operation down to -30 degrees F. New alloy ring
gear gives extra strength up to 100,000 PSI for maximum
readability. New indicator potentiometer, new ferrite beads
reduce RF susceptibility, new cinch plug connector plus 8-pin
plug at control box.
The HAM-IV has dual 98 ball bearing race for load bearing
strength and electric locking steel wede brake prevents wind
induced antenna movement. North or South center of rotations
scale on meter, low voltage control maximum mast size of 2 1/16.
It operates at 110V
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