hwabnig@ .- --- -. dotat wrote in news:i1bj74h45n3u9redkg4qr1oel8k9nhnqt3@
4ax.com:

....
The narrowing of the beam characteristic is only dominant
in the horizontal orientation, the vertical retains about the
characteristic of a single dipole.

That proposition is not born out my models or measurements of real
antennas.

It is true that the E plane and H plane half power beamwidths are
different, but as boom length (gain) is increased, the two approach each
other.

Owen