Had a bit of luck when assembling the antenna to the pan and tilt
mechanism
prior to placing them on the tower. The PM motors do not have brakes
on them!
Fortunately the leverage of the tilting does not overcome the motors
inertia and I am in the clear.
For the future any ideas on a braking means to ensure stabilility in
position?
Both motors use chain drives and I suppose I could use solenoids to
tighten the chain
Regards
Art.