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DX Engineering RT-4500HD Rotator
Introduction
The RT4500HD Heavy-Duty Rotator has capabilities that surpass most rotators available on the Amateur
Radio market. In addition to an impressive list of features and benefits, it is especially noteworthy that this
rotator does not have mechanical limit switches. Soft rotation limits are set as desired in the controller, to the
limits of the installed antenna cables. If the antenna or the mast ever slips, simply reset the controller to the
new center of rotation and recalibrate the rotational range. Climbing or antenna mast repositioning is not
immediately required.
Install the DX Engineering RT4500HD Heavy-Duty Rotator in your tower to take advantage of these features
and benefits:
Superior Rotational Torque > 4,400 in. lbs. with high ratio worm gear drive powered by an extra
heavy-duty 24VDC motor
Exceptional Braking Torque >18,500 in. lbs. by high ratio gear reduction that prevents rotation of the
mast mounted antenna system due to wind
Very High Vertical Load Capacity — internal needle thrust
bearing handles up to 2,000 lbs.
High-compression Heavy-Duty Top Mount Mast Clamps
available for 2-inch OD or 3-inch OD masts
Precision Movement — accuracy /-0.1 degrees with
high resolution magnetic pulse sensor controller
Easy Maintenance — access panel allows service of the
magnetic pulse sensor assembly without removing the
rotator from the tower
Built for Longer Life — all steel gears are hardened; high-
load gears are welded onto their shafts to prevent slippage;
larger main gear provides increased strength
Weather-Protected — sloped powder coated cast
aluminum alloy body sheds water; seals at the output shaft,
intermediate plate and access panel keep moisture out;
weep holes make sure it stays dry
Worry-Free Installation — four-bolt standard mount; this
triangular-shaped rotator is ideally sized to fit inside any G-
series ROHN tower, including 25G (but the RT4500HD
easily handles larger antenna systems than 25G will
withstand). Note: Recommended for Rohn 45G and
larger towers. This rotator may overload a Rohn 25G tower.
Works with High-Quality Controllers — Optional DX Engineering Green Heron Rotator Controller DXE-
RT21DXE or other 24VDC, Pulse Counting Programmable Controllers including Green Heron and the
MOH-ARCO-115V microHAM ARCO Advanced Rotator Controller
Fully bench tested prior to packing to ensure rotator is functioning within design specifications
