Hello Craig:
What you are referring to is a transmission line commonly called a G-line,
designed by Goubau, and Schwering, a single insulated wire spanning the
distance to the antenna, and having conical coaxial matching horns at each
end. Apparently very low loss. I remember details in older antenna
handbooks.
See a couple of sites:
http://en.wikipedia.org/wiki/Goubou_line
http://qrp.kd4ab.org/1995/950126/0028.html
http://djster.travisbsd.org/index.php?s=e0f31ec52d9727fef3a34acd73ebfb6e&showtopic=56
73, DX, de Pat Barthelow AA6EG aa6eg@hotmail.com
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See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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