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				I may attempt the attic set up, and then move it to the roof if it doesn't work.
			
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 Wise plan.
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				I assume the direction it installed to still affects its performance. in my situation, would it be best to install it pointed towards the New Orleans stations?
			
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 Absolutely.  The term- "multi-directional" is one without a specific accepted definition.  We generally use that term for any antenna with a broad-enough beamwidth (DB8 excepted) to accept signals from towers that are not co-located.  The tech data sheet with reception patterns for the DB4e is on our website.  See "Documents" on the DB4e product page.
I would only expect the need to remove an outdoor antenna in the event of a tropical storm or hurricane.  Those have ample warning so there should be time to dismount an outdoor antenna when the need arises.