> Without all the meter readings etc, if I did have a SWR of
3:1 with a 50 ohm
> cable, that would mean the impedance at the feedpoint
could be 16.6 ohms or
> it would be 150 ohms. I can't figure why it would be
clear down to 16.6 as
> I know the radials are in good shape. I trimmed all the
> re-soldered them so they would be fresh. Would the
presence of the 80 meter
> dipole about 6-8 feet away from the point where the
antenna goes from
> horizontal to vertical mess it up that bad.
An 80m dipole antenna near the inverted L can drastically
affect SWR. Many low 80m dipoles combined with the feedline
act like a T antenna and resonate on 160.
Also, as a general rule the better the radial system (as a
general rule, do not take this as an "always" rule) the
lower the antenna feed impedance. It might easily be 15-20
ohms feed impedance.
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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