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Old 15-Apr-2021, 1:59 PM   #6
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Join Date: Sep 2016
Posts: 244
For that antenna, your proposed 4-5 feet of spacing with 1-1/4 inch mast seems fine, even for antenna 8 feet above roof. That is not a huge antenna like the HD8200U, CM-5020 or similar. One thing to consider is how to keep the sections from spinning, as you don't want your aim to wander over time due to wind. Do you put a cross-bolt or something at the joints?

(BTW, I meant the wall thickness of the mast pipe, sorry if that wasn't clear)
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