Topband: Question abt gain in bi- vs uni-directional Beverage

[Maurizio Panicara]

Very "short beverages" apparently work if one neglects to consider what
happens in the vertical plane.
A 250-300 (about half wave) feet wire parallel to ground and without
termination approach a very low, end feed half wave dipole and has a big
response to high angles.
A 250-300 terminated wire can have some F/B at medium low elevations, but
its big response at high elevation angles (where no F/B exists) make it
fairly useful, unless one is devoted into reception of MW ground wave
signals in daylight and doesn't have to care about what happens in the a 3D
plane.
The advantage in using a termination resistor with a short wire parallel to
ground is also to set a feed point impedance that's much more correct for
the standard 9:1 transformers used with single wire beverages.

73,
Mauri I4JMY


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