KV4FZ writes:
<< George, I read sometime in the past that the necessary wave tilt that
makes a Beverage develop its directional and performance criteria equates
to the propagation of the incoming signal differently over the wire and the
poorer conducting earth beneath it >>
All - I believe that theory is correct for only for the very low frequency
signals (<500Khz) where the wave front is nearly perpendicular to the earth.
This isn't the case at 1.8Mhz where the signals arrive at low angles. I for
one have wondered for years whether so called Beverages on 160 are not really
just long antennas with useful azimuthal and vertical radiation (reception)
patterns and the noise discriminating feature achieved by the velocity factor
differential not available on the ham bands.. ??
In a message dated 6/10/00 8:57:39 AM Eastern Daylight Time, herbs@islands.vi
writes:
<< George, I read sometime in the past that the necessary wave tilt that
makes a
Beverage develop its directional and performance criteria equates to the
propagation of the incoming signal differently over the wire and the poorer
conducting earth beneath it >>
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