On 2014-01-07 05:05, Tom W8JI wrote:
What is the top loading? Because something resonates on 160 m with
something on the top doesn't mean it will act like a half wave on 80.
At my QTH (YMMV):
My 90 foot vertical with four 30 foot top loading wires sloping
down at 45 degrees is series resonant on 160 meters and parallel
resonant
(voltage fed) on 80 meters. The 80 meter impedance is a little over
1000
ohms. It pretty much acts as a half wave on 80.
Rick Karlquist
N6RK
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