Although the numbers are over an 11 year range, they do provide an
average. I'm a firm believer in playing the averages, since over the WHOLE
course
of the cycle you will do best designing your station.
Having the ability to change that optimal angle is a big advantage.
Although my stacks are all very high, the ability to BIP/BOP them allows me to
accommodate the higher angles that are not covered by the higher antennas.
Of course, if you don't have stacks, you can do the same sort of thing
with a second antenna at 50 feet. Not only does this allow a change of angle,
but with this proper phasing apparatus you now have a second antenna...but
also a stack that can be switched in and out of phase.
That would be my recommendation.
Bill K4XS/KH7XS
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