Fw: Topband: Inverted L modeling

[George & Marijke Guerin]

Hi Bob and Other 160 entheusiasts.

I agree with Bob.  The Tee top does make a balanced capacity hat.  That is
also true of three or four wires, either horizontal or sloping up or sloping
down like guy lines.  More wires work also.

73,        All the best for 2000

George,    K8GG

-----Original Message-----
From: Bob Eldridge <eldridge@direct.ca>
To: gmguerin@voyager.net <gmguerin@voyager.net>
Date: Thursday, December 30, 1999 10:50 AM
Subject: Re: Topband: Inverted L modeling


>like a 1/4 wave wire acting as a low "sloper" putting most of the RF 
>energy into the sky.
>
>The only alternative is to make the antenna into a Tee, which would cancel
>the horizontal radiation.

I don't disagree with your recommendations, but the implications of these
two statements will lead some people to believe that with the Tee, the
"cancellation" of the horizontal component "leaves more energy for the
vertical component", whereas with the sloping extension the energy radiated
from it is subtracted from that which would otherwise have been radiated
from the vertical portion.

Each top wire of the Tee radiates and creates a field, but broadside to
them the fields cancel. Seems to me the true value of the top wires is
their utility as a capacitance.

Happy New Year and keep up the good work.

Bob VE7BS


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