I've always heard/read that the signal radiated from an antenna
positioned several wavelengths down the hillside from the peak of a
mountain (and pointed away from it, of course) is stronger than the
signal from an equivalent antenna positioned at the peak of the same
mountain. That makes reasonable sense to me since I don't think the F/B
of a yagi is particularly high for negative angles (i.e., down toward
the ground) and there must be some influence of that energy, but I don't
think I've ever seen anything other than a subjective discussion on the
Can anyone point me to an analytical discussion of that kind of
situation, or has anyone ever made a real-world comparison?
EZNEC doesn't model irregular terrain and HFTA ignores everything to the
rear of the antenna. There may be ways to trick one of those
applications into looking at it, but so far I haven't figured one out.
Thanks much es 73,
TowerTalk mailing list