Old Ed wrote:
Are the model comparisons based on power applied to the antenna
feedpoint, independent of feedline and/or tuner losses?

Yes (However, for A-B comparisons, the dipole used a tuned feeder
and no tuner. The vertical was fed with RG-213 and no tuner.)

What height and ground conditions are you modeling for the dipole?

It's my typical East Texas ground at a height of 40 ft.

What radial structure are you assuming for the "typical 1/4WL
ground-mounted monopole?"

8 radials, modeled one foot above ground. A-B tests were done with
8 radials 20 ft above ground sloping down to 6 feet above ground.

What ground conditions are you assuming for the "typical 1/4WL
ground-mounted monopole?"

Typical East Texas ground, same as for the dipole

What is the best (read highest average gain) elevation angle for the
dipole under the assumed conditions?

9 dBi at 34 degrees, 8.5 dBi at 26 degrees, 0 dBi at 7 degrees

What is the best elevation angle (read highest average gain) for the
monopole under the assumed conditions?

-0.65 dBi at 34 degrees, 0 dBi at 26 degrees, -4.5 dBi at 7 degrees

At what elevation angle(s) are the modeled patterns being compared?

See above. The dipole beats the vertical by a couple of S-units in
the dipole's best direction. A-B tests were actually run on 40m.
--
73, Cecil http://www.qsl.net/w5dxp



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