> It is called a solenoid. Apply 12 volts and it will whack the element.
> Chuck WD4HXG
How about one of those electric powered buzzers? They are about the same as
a solenoid but are designed to vibrate. Now all you need to do is find a
resonant point on the boom.
Since a couple pair of hawks moved in I've had no problem with birds on the
antennas. One of them came diving through the trees past out bird feeders
with the little and not so little birds scattering. At the last moment it
recognized the window, or the reflection looking like another hawk coming
head on. Those big wings spread full, he went into reverse and just
"thumped" the window. His wing span was as wide or maybe wider than the one
window pane. Too bad my big cat wasn't sitting on the window ledge. He may
dine on birds, but I'll bet that would have him still hiding behind the
Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
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