K4SAV:
>I wasn't thinking 160 meters before. Now the question. Do you think
signals entering a duct on 160 would enter that duct between 75 and 90
degrees elevation? Any speculation? What if you built an antenna with
even more gain and even narrower beamwidth? Can you think of any other
uses for antennas like this? Did the HAARP research ever produce any
useful information on this kind of thing?
No idea how narrow the angles are. I simply wanted a
high-angle complement to my low-angle vertical. I've seen
these high angles to DX on both 80 and 160 many years at
sunrise, sunset and in strong Aurora. The difference can
truly be striking at times.
More gain is always better *IF* you can steer the angles.
That's what vertical stacking is all about on the higher
bands. Fixed TOAs are not useful for the same reason fixed
azimuths are not useful. The ionosphere is too dynamic to
have either H or V angles fixed and narrow. You might ask
W0UN about HAARP since he installed some of their systems.
73, Bill W4ZV
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