The UVSJ = UHF/VHF Separator/Joiner.
Buy the UVSJ at
http://www.solidsignal.com , by typing the letters , uvsj , in the solidsignal search box.
The ANT751 is connected to the VHF connection of the UVSJ and the DB4e is connected to the UHF connection of the UVSJ , the third connection of the UVSJ is connected to the CPA-19 preamp.
-->DO NOT use a common simple splitter in reverse to combine the DB4e and ANT751.<--
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.
The HFS splitters pass power from the amplifier power supply and power injector to the actual preamplifier that is mounted close to the antenna/s.
Buy the HFS splitters at
http://www.hollandelectronics.com , or ,
http://www.solidsignal.com.
A common splitter , that also passes power , named a , power passing splitter , will also work.
Or can place the preamp power supply and preamp power injector , ahead of the splitter , before the splitter , on the input side of the splitter.
Here are some above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at
http://www.solidsignal.com by typing the word ronard in the solidsignal search box.