For reception of the south group of Tv stations at the zip code level of reception aim a Winegard HD7084P All Channel Antenna with a Winegard AP8275 preamp at about 180 degree magnetic compass (south).
The north antenna system and the South antenna system WILL NOT be connected together on the to the same coax.
The 2 antenna systems Will Have separate coax systems all the way to the location of the Tv or Tv's.
A remote control A/B antenna switch will be at each Tv location.
http://www.radioshack.com , # 15-1968 , or ,
http://www.mcmelectronics.com , # 32-4425