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2 guys have the g-max up that I talk to,

one has a sigma4 & g-max up,


With one guy I see no change in his signal over his imax but I don't know how either are / were installed,


The other guy is my buddy 22 miles from me atcf,

He has mr coily 5/8 vortex Avanti & most other good antennas,


The sigma4 & G-MAX are installed at about the same height to base of antennas, In A/B testing his signal on the g-max is a little stronger than his sigma4 to me,


I think G-MAX is better built than the old 5/8 over 1/4wave BIG-MAC which also had an edge over any of the shorter antennas,

I don't expect them to withstand very high winds.