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			Teleview is suggesting to aim a high gain antenna at NY, and get the close and strong Philly stations off the back/side of the antenna.  WPVI is a vhf low station, so it needs a big antenna, hence the recommendation for the HD7084P.  Ignoring anything else about the stacker, it would not get you a good signal in the VHF low band.
		 
		
		
		
		
		
		
		
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