While salt water is definitely good for verticals, but it doesn't
help horizontally polarized antennas like Yagis. For the low bands
(160/80) where construction of large Yagis is a mechanical challenge,
a 4SQ is hard to beat. However for the higher bands, it's difficult
for a vertical array's gain to compete with the ground gain and
stacking gain of a Yagi stack. An ideal solution might be a
combination of both (4SQs for 80/160 and Yagi stacks for 40-10).
73, Bill W4ZV
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