[Elecraft] Inverted-L (was OT: Vertical antenna)
Ron D'Eau Claire
ron at cobi.biz
Mon Dec 20 19:18:02 EST 2010
That's my experience too. Your Inverted L has a much, much higher impedance
than any Marconi antenna on any band where it's 1/2 wave or longer. That
makes the efficiency far less dependent upon the ground and the effect of
the ground much less.
Ron AC7AC
-----Original Message-----
Now here's the question....
Folks assume ground radials to be (non resonant) but that isn't the case. So
what would be the best solution for a multiband antenna with ground radials?
Well if we follow this idea, we would need multiple 1/4 wavelength radials
for each HF band for best performance.
My inverted L is 50' up and 150' out. I use a separate elevated counterpoise
for each band. I've found that a ground rod and some buried radials have
virtually no effect. I just use them for lightning protection.
Steve
N4LQ
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