RadioBanter - View Single Post - HF-Ground

January 24th 06, 08:57 PM posted to rec.radio.amateur.antenna

wrote:
I disagree. Transmission lines have two conductors. Radials don't.

Roy, try using your imagination!

My "Electronics Equations Handbook" gives the specifications
for a "SINCLE-WIRE ABOVE-GROUND TRANSMISSION LINE" including
Z0, C, L, and resistivity adjusted for frequency.

Don't forget the single-conductor transmission line invented by Goubau
and named "G-Line" in his honor. Quoting from page 164 of my 1972 copy
of "The Radio Amateur's VHF Manual":

"The basic idea is that a single conductor can be an almost loseless
transmisison line at untra-high frequencies, if a suitable launching
device is used. A similar launcher is placed at the other end.
Basically the launcher is a cone-shaped device which is a flared
extension of the coaxial feedline...."

I was in error in saying that a transmission line must have two
conductors. The "G-Line" is the one exception I know of. But it
certainly doesn't function in anywhere near the same manner as a buried
radial. I'm afraid only Reg knows how his "R-Lines" work.

Roy Lewallen, W7EL