Jim Lux wrote:
Sonny Hood wrote:
On Wed, 27 Feb 2008 15:05:54 -0800, Roy Lewallen
wrote:


The gain and pattern will be very close to that of a dipole at a
height of about 24 feet. Maximum field strength will be straight up,
and quite dependent on the ground characteristics.

What's a point incident antenna?


Hi Roy, I consider it the radiation point of a "0" length element
which radiates in spherical direction.


Careful there. A "zero length" (or infinitesimal) dipole (aka a
Hertzian dipole) does not have an isotropic (spherical) pattern. It has
1.64dBi directivity, as I recall.

His definition fits the description of an isotropic antenna. It's not a
dipole or any other kind of real antenna, and has a directivity of one
by definition.

Roy Lewallen, W7EL