Hi Dick,
Can't help you with SP3KEY details, but here are a few thoughts.
Since the K9AY is not an omni antenna, I guess the configuration is not
really 4 square. You would only need 2 K9AY's positioned broadside and
spaced at about 100m (fed in phase) to cover a single direction.
I guess they may use 4 antennas, but two of them would have to be rotated 90
deg. Then you could cover 4 directions by using reversing switches and
selecting the appropriate pair.
73, Greg, ZL3IX
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