> I was pleased to see Craig, K1QX, and others refer to my October 1980,
> "Long transmission line for optimum antenna location." I am still using
> my 4-wire lines, cross connected, to my two beams over 400 feet from the
>
> Henry G. Elwell, Jr. - N4UH
Perhaps the article answers this question, but why are
4 wire lines used? The only possible advantage I can
think of would be lower characteristic impedance, but
since it is easy enough to build a good 50 ohm to 450
ohm broadband transformer, that doesn't really seem
to be much of an advantage. I would think the loss for a
given weight of copper per foot of line would be
about a wash. Also, I would think connecting the
lines in parallel instead of crossed would give
a lower loss per foot because the impedance is
higher.
Rick N6RK
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