K9AY wrote:
>> As W8JI and others have pointed out often -- antennas can only lower the
> noise through directivity. "Omnidirectional" and "lower noise" are
> mutually
> exclusive!
Generally true, but on the other hand, I frequently can hear as
well or almost as well on 160m using a 40m inverted vee (basically
omnidirectional) compared to a VERY directional Beverage. I am
assuming this is a polarization phenomenon. BTW, this is not
a "lucky" inverted vee. Other inverted vees at different heights,
orientations, locations, etc are nearly indistinguishable from this one.
Also, I can put up a simple loop, again basically omnidirectional,
and orient it in a certain direction and null out power line
noise. I can move this loop 1/4 mile and still null out power
line noise, so again, it is not a "lucky" loop or a "lucky"
location (which is not to say those don't exist).
Last weekend I was listening to JA's on 160m on a 20 foot high
80 meter dipole. Again basically omnidirectional, but it was
close to the beverage in performance, at least that day for those
stations.
Rick N6RK
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