Topband: Shunt Fed Tower Info

[Donald Chester]

>I see two problems Bill. First, a half-wave grounded structure is
>anti-resonant when grounded. Grounding detunes the entire structure.

What about making it function as a quarter-wave groundplane.  Connect 
directly to the tower a set of elevated quarterwave radials (as many as 
practicable; at least four) approximately a quarterwave from the top of the 
tower.  Let them slope away from the tower.  Run a skirt from the top of the 
tower to the point where the radials are attached, and feed the bottom of 
the skirt, using the tower and radials as as a grounding point.  This would 
make the top quarterwave of the tower function as a folded monopole.

Don K4KYV

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