In a message dated 97-10-21 16:00:42 EDT, you write:
<<
Beverage antennas are very lossy and tightly coupled into the nearby
Earth, as a result there is virtually no mutual impedance among even very
close spaced Beverages. It's very simple to experimentally confirm this
by pumping RF into one Beverage and measure the loss into an adjacent
Beverage (a spectrum analyzer with tracking generator is an easy way to
measure this). Parallel Beverages spaced from each other by the same
distance as their height above ground have about 30 dB of isolation
(somewhat dependant on ground properties).
>>
While this is dead on the money, be advised that beverages should be as far
away from other antennas as possible. A shunt fed tower or sloper for 160 in
close proximitiy to a beverage will couple the noise into the beverage hat
you are trying to eliminate.
Tom, K5RC/7
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