Reg Edwards wrote:
George Brown was over precautious. Only one vertical radial is
needed. There is no loss in efficiency. The radiation pattern remains
sensibly the same.
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Reg.

All you have to do is figure out how to decouple the feedline for less
cost than the cost of three additional radials and a tiny easy to build
choke.

Getting the feedline off a four radial GP is bad enough.