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Greetings Marconi: I hope all is good your way.  I have a few thoughts on the Maxwell/Ballantine page you posted.


Although I do not have the Maxwell literature,  I believe he is talking about the medium wave frequencies of am broadcasting, and there may be differences in radio wave propogation from them to the hf frequencies.  I put this out there and perhaps the more advanced antenna guys can comment on the technicalities.


Regarding the text on Ballantine's discovery.  Is Maxwell saying that the length of the radiator remained constant, while the tower height is what is changing?

This would seem more likely to me to be what he is discussing,,,That is the elevated vertical attempt of a dipole resulting in what is commonly known as the 5/8th wave length vertical.