Have a 6 meter yagi (the 7 El. M Squared), and modeled it - the pattern
gain,front/back ratio, E & H Degs., were way off from those claimed- at 50 MHz.
Upon reconsideration, changed freq to 49 MHz, and VIOLA, got the expected
gain, ect ! I then shortened the elements by 2/3 of the boom diameter-
then it seemed to meet the claimed gain, ect. at 50.5 MHz ! Changed that to
3/4 the boom dia. and then , got claimed gain, ect., where it should be. My
question is : It is my understanding that this is correct for calculating
(or building ) antennas , with elements THRU THE BOOM, but this antenna has
the elements supported on TOP OF THE BOOM ! Am curious as to what is going
on (what am I missing)? any ideas ? Just curious-- Jim NN7K

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