How can I tune the parasitic elements (with an analyzer) when supported by a
permanently grounded (shunt fed, Omega matched) tower?
You can't, at least not in a meaningful way.
I read the tuning procedure requiring the tower to be ungrounded? - non
resonant, in order to set the length of the parasitics?>>>
Yes. That would have to be the case.
Also - with Tom's analysis, that the parasitics are actually sloped
verticals - by virtue of the horizontal portion ground coupling - wouldn't
one be better off stringing multiple (exactly opposite) counterpoise
wires?>>>
It would make the array less sensitive to ground losses under the
counterpoise.
Halfwave antennas are really only half wave antennas when they are
reasonably straight. When we severely bend one and place the bent leg very
near earth, it really becomes a Marconi with a counterpoise. The wire near
earth is really just a single elevated radial, no matter what we want to
call it.
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Topband Reflector
