Any typical yagi elements will vibrate in light winds. And they do -
constantly. This is due to traditional element design where the total element
is similar in size. Tom Schiller, N6BT, of Force 12 recognized this problem
and uses an agressive taper schedule. Instead of having 2 or 3 long pieces of
aluminum 6 feet long (or so), Tom might have 4-6 shorter pieces with exposed
lengths of 33 inches or so. So the elements go from large at the boom to small
at the end. This eliminates the constant element vibration. While this may not
be much help to existing element problems, it does show how it can be solved.
Rope in the element is the time-honored way of minimizing it in the rest
of the antennas.
Cheers, Steve K7LXC
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