Here is an other way to do it. With 1 coax down lead.
Install the YA1713 as I recommended , 20 to 40 feet antenna height is Ok for reception. Most likely WDAZ-Tv channel 8 will be received through the back side of the antenna.
Install a Antennas Direct CS4 , with the reflector screens removed , with the reflector screens removed the CS4 will receive 2 directions , the front of the antenna and back of the antenna.
Aim either side of the CS4 at about 117 degree magnetic compass direction for reception of , KXJB , KVLY , WDAY.
And the other side of the CS4 will aimed at about 308 degree magnetic compass direction for the reception of KMDE PBS.
Connect the YA1713 and CS4 together with a UVSJ = UHF/VHF Separator/Joiner. Type the letters uvsj in the solidsignal search box.
The CPA-19 preamp is connected to the output of the UVSJ so the CPA-19 preamp is amplifing both antennas.
Install the CS4 UHF antenna at no less then 40 feet above the ground.
For 1 Tv connected use no splitter.
For 2 Tv's connected use a , HFS-2D , 2 way splitter.
For 3 Tv's connected use a , HFS-3D , 3 way splitter.
Buy the HFS splitters at ,
http://www.hollandelectronics.com ,
http://www.solidsignal.com.