If the north group and east group of Tv stations are not received well with the DB8 and C5 antennas aimed in between.
Then here is Channel Surfing Friendly way to receive both groups of Tv stations.
Aim the DB8/C5 at the north group of Tv stations.
And aim a Winegard HD7696P antenna with a CPA-19 preamp at the east group of Tv stations.
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The 2 antenna systems are Separate antenna systems all the way to the Tv and are connected to the Tv with a remote control A/B antenna switch ,
http://www.radioshack.com , #15-1968 , or ,
http://www.mcmelectronics.com , #32-4425.
The A/B antenna switch is Channel Surfing Friendly , push the button on the hand held remote control change antennas and keep on channel surfing.
Here are some places to buy antennas and etc. ,
http://www.solidsignal.com ,
http://www.winegarddirect.com ,
http://www.amazon.com.