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Tom Donaly · July 11th 06, 03:17 AM posted to rec.radio.amateur.antenna

wrote:

Cecil Moore wrote:

Tom Donaly wrote:

If you can bring yourself to think in terms of
current directions and far field superposition of waves, this
behavior shouldn't be that hard to understand.

It's pretty easy to understand. Any two radials,
180 degrees apart and high enough, should theoretically
cancel each other's radiation in the far field.

Not true.

There is always an angle and direction where the fields do not fully
cancel. The problem is the spatial distance is different unless exactly
broadside to the pair.

Even 4 radials has this problem, but the more radials the less of an
issue it is.

73 Tom

How much not true? I expect you're right, but you could make the
same argument that a two wire transmission line radiates because the
wires don't occupy exactly the same physical space. Reg made the
same point, but didn't provide any numbers, so, according to his
own philosophy he doesn't understand the problem.
73,
Tom Donaly, KA6RUH