This may indicate that there is too much resistance between the control box
and the rotor.
This could be due to the cable wire being too small, too long, or a poor
solder or crimp connection on the cable.
And yes, it's a poor design and may still hang up under ideal conditions.
Jim - KR9U
__________________
My experiment:
I added a simple switch in series with pin 2 of the rotator cable so I can
open the brake solenoid circuit. When the rotator gets stuck, I /open that
switch/. This allows me to activate the motor to do the 'T2X rock' without
allowing the stuck brake solenoid to load down the available voltage. I do a
quick back and forth with the motor with the brake engaged. Then I close the
switch, which allows the brake solenoid to retract. Voila! It moves again.
So far, this has worked several times. Obviously, if attempting to move the
motor with the brake stuck doesn't hurt anything, moving the motor with the
brake engaged won't either.
So the common knowledge about stuck T2X rotators may be incomplete, and it
might make sense for automated rotator controllers to do the 'T2X Rock' with
the brake solenoid de-energized.
Try it and let me know if it works for you!
p.s. The transformer does have a thermal cutout, which will open if it gets
too hot, then close again on cool down.
------------------------------
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End of TowerTalk Digest, Vol 271, Issue 16
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