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I am surprised it has not been asked already but just what kind of antenna is the 40 foot long beam anyway? What band(s) does it cover? My concern is not so much with the mast and vertical (well a little bit) but rather with the ability of the Glen Martin roof tower to support such a large antenna regardless of how well the roof is reinforced.Roof mounted antennas are subjected to a lot of weird wind forces that result from uplifts caused bu the angle of the roof and this places odd bending moments on such a large antenna. Again, what is the model of the antenna?