Tom Rauch wrote:
< snip >
> So as Dave says, it is a myth that a line feeding a single
> antenna has a specific "sweet length". If the system is
> behaving properly, SWR is constant.
Exactly right! And if SWR>1.0 then the impedance at the transmitter
end of the line changes with differing line lengths, so a change in
line length can sometimes make it easier to match for your
transmitter (i.e. the length might seem to be the "sweet length,"
hence the birth of the myth.) That length is likely to be different
for different bands, so the term "single antenna" should probably be
"monoband antenna" for any given line length to be "sweet."
George T. Daughters, K6GT
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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