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Old February 21st 04, 08:44 PM
Dave Head
 
Posts: n/a
Default Antenna Swings In Wind - How Much Is Too Much

Hi,

I have a 4 el., 5 band quad on a Yeasu rotator on a Heights Aluminum tower.
The antenna is swinging, in a fairly stiff breeze today, a total of about 20
degrees of arc. Of course that's not a problem with the width of the beam of a
4 el quad, but the 24 el 2 meter antenna I plan to add might have an issue with
that much swing. I forget which model Yeasu rotator it is, but it is supposed
to be big enough for the 4 el. quad (30 ft boom). G450? I think?

Anyway, is 20 degrees in a stiff wind too much? Can I expect the rotator to
fail soon over this? The tower does not appear to be twisting. The rotor base
plate doesn't seem to be moving. I don't think there's that much play in the
bolts of the masting, and the tower appears tight to the mast. I think the
play is in the rotator.

Is it common for a rotator to have that much play?

Dave Head