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Re: [TenTec] New and Improved Terminology (NVIS origins)

To: tentec@contesting.com
Subject: Re: [TenTec] New and Improved Terminology (NVIS origins)
From: Neal Laugman <neal.laugman@gmail.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 10 Jan 2011 22:03:10 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Jerry and the group:

> The wire elements in the Hex Beam and Spideream surely vibrate in the 
> wind, on power and phone wires its called Aeolian vibrations, most 
> prominent at light winds. http://www.uh.edu/engines/epi1653.htm 
> describes it in more detail.

I wondered if there was a name for that effect. Polyrope was indeed my
enemy one 30 below moonlit night out in the Alaskan Bush. I had a
20-foot spruce pole mast attached to a cabin's perlin with a polyrope
halyard running the length of the mast. I thought I was loosing it as I
the entire cabin seemed to resonate with this chilling sound. After I
had been outside a couple of times checking for flying saucers, I
finally figured out the mystery whilst reclining in my bunk. I went
back outside, put the flashlight to the eighth-inch line, touched it - 
and the sound stopped! It was the temperature and an ever-so-slight
breeze off the river.

 Neal, NL7VL/9

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