In a message dated 6/11/2008 7:44:16 P.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> Here's the problem: I have a Yaesu rotator mounted in a 55 foot crank
up/tilt over tower. The thrust bearing and 10 foot mast are also from the
tower
manufacturer.
> The antenna is a basic 4 element Steppir. The rotator must come out to
replace the potentiometer (hope that is spelled right). Any way to pull it
without disassembling the beam? The rotator is mounted to a plate about 4 feet
below the thrust bearing.
Don't remember if this was addressed or not, but the answer to your
question is probably.
What kind of tower is it? If it's a lattice-type UST, you can crank it
up until the rotator is exposed and then lock the tower down with some pieces
of pipe or 2x4's thru the braces or U-bolts on the legs so that it's safe to
climb.
If you don't have mast locking bolts, then you can use a U-bolt on top
of the thrust bearing to support the mast while you work on the rotator. You
need to jack up the mast just far enough to remove the rotator and you'll be
good to go.
Cheers,
Steve K7LXC
TOWER TECH
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