Has the following experiment been tried?
Suppose you have 2 stations with stacks.
Skip is long, so that propagation is better
with both stations on their upper antenna,
compared to both stations on their lower antenna.
Now compare propagation with one station
on the higher antenna and the other on the
lower antenna. According to the theory
that the take off angles at both ends of
the QSO must be matched, the mismatched
configuration should be even worse than
two low antennas. It would also be interesting
to see if the mismatched case is reciprocal
(ie the high station goes to his low antenna
and vice versa).
I suspect this theory might be true for
one hop paths, but not hold for multi-hop,
ducting, etc. I used to hear W7RM with
his stack on 20 talking to OH stations
with similar stacks, but I am not aware
of him publishing any results.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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