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I think I was confused as usual with your description. I was thinking that square thing might be the tuning setup you used from your EFHW, and that is how you got the antenna to match perfectly...since you didn't use the 4:1 balun. Isn't that strange that the calculator website indicated that the balun shown was recommended and was necessary to handle the apparent mismatch...and that it ended up not being needed at all? I guess this is just another case about chokes and such that are claimed to be essential for some antenna operations, and doing without the device just doesn't seem to make a difference that is detectable.

 

Beetle just made a post in another thread about chokes/baluns, and told somebody that he has used various dipoles types for years, and that he never found a need for a choke or balun in his experience. This is about the same story I often relate, as in my experiences using such devices, where I find their use dubious at best.