The reason for the brakes on rotors,even if you have a 1800/1 ratio of
reduction or more holding is because back torque by the mast by the air and
inertia makes the gearing to wore out because they are holding the antenna,in
my case on my Yaesu GSDX1000, I am putting an outside shoe solenoid electric
brake on the mast,since I am adding more antennas so that the rotor will last
more years. Gear backlash play between gears also do some damages,that is why
on big parabolic antennas they use two motors
moving in different and contrary directions to eliminate backlash and also
eliminate pointing errors!
Fernando,XE2FL
Email. [email protected]
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