The 104 ft boom seems rather short for 4 elements. This
would be like 26 ft on 20 meters. I have heard of 3 element
20 meter beams on 26 ft booms.
Also, if you were going to insist on 4 physical elements,
why not drive the inner two as a log cell and get more
bandwidth? (Like the 4 element KLM 40 meter Yagi).
Rick N6RK
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