"Cecil Moore" wrote
Keith Dysart wrote:
From assertion A above, is it your contention that far from
the antennas it is "interference" that causes the variation
in field strength, but that on the line drawn between the two
antennas some other mechanism is responsible?

Of course not - please don't be ridiculous. If the two
antenna elements were isotropic point sources, on a
line drawn between them, there could be no interference
and there would be only standing waves in free space
along that line assuming no reflections from nearby
objects, etc.
______________

Cecil, hopefully you understand that even isotropic radiators near each
other and excited on the same frequency with the same amount of power will
generate far-field pattern nulls.

Maybe I'm misunderstanding you.

RF