For reception of the south west Tv stations/channels aim a Winegard HD7696P antenna with a Channel Master CM7778 preamp at about 200 degree magnetic compass direction.
The same information about antenna height and avoiding obsticales in the way of reception applies.
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These will be 2 Separate antenna systems and Will Not be connected to gather on to 1 coax.
The 2 Separate antenna systems Will Be separate all the way to the Tv location where the 2 separate antenna system coaxes will be connected to a hand held remote control A/B antenna switch ,
http://www.radioshack.com , #15-1968 , or ,
http://www.mcmelectronics.com , #32-4425 .
A/B antenna switch is Channel Surfing Friendly , push the button on the hand held remote control , change antennas and keep on channel surfing.
Putting one antenna on a antenna rotator Is Not channel surfing friendly , must wait for the antenna to rotate and not every one in the house will agree on the direction the antenna is aimed.