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1. [allowed] [TowerTalk] Re: Antenna element vibration damping -How (score: 1): Author: didier@arc.net (Didier Juges); Date: Sun Aug 10 14:05:28 2003; It is a fact of nature that a tube in moving air will generate vortices which will induce vibrations. Whether or not the antenna vibrates under that is a matter of element rigidity (material), not el; /archives//html/Towertalk/2003-08/msg00327.html (13,054 bytes)
2. [allowed] [TowerTalk] Re: Antenna element vibration damping -How (score: 1): Author: k1ttt@arrl.net (David Robbins K1TTT); Date: Sun Aug 10 14:53:04 2003; for a as electric utilities use the same idea on hv lines. Either a metal or plastic spiral that goes around the wire is used to break up the vortices. On a large diameter wire (1.5-2" diameter) the; /archives//html/Towertalk/2003-08/msg00342.html (11,496 bytes)

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