I use the switchable two wire (coax in my case) version in the ON4UN book. It's
been posted and printed elsewhere, but have the book so I use it ;o)
Mine is about 330' long as is capable of being switched remotely. Pretty simple
and it takes the edge off crowded and some noise situations. Mine has a very
deep null of Caribbean stations for some reason, much less in most other
directions. Hard to model as it borders/parallels barbed wire fence and faces
into power lines. Still, it was worth putting up.
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