Reg wrote,

What the whole damn lot of you have forgotten is the electromagnetic
coupling which occurs between the antenna wire sections on either side of
the phasing coils, especially when the adjacent wire sections are supposed
to be in anti-phase with each other.


Absolutely correct. No analysis is complete without taking that into account.
I was hoping no one would bring that up, however, since I've
been having too much fun goring Cecil's rather fragile ox.
73,
Tom Donaly, KA6RUH