I bought a DB8e antenna and got it mounted.  I also ordered the RCA digital preamp but can't figure out for the life of me how it is to be wired to the antenna.  
Do I bypass the splitter that is in the black box that came with the antenna and go into the preamp only? 
The two ports that I would connect into from the antenna on the preamp have a vhf/uhf separate/common switch.  I assume I choose common, but not sure.  The directions don't seem to address 1 antenna with 2 cables.
Hope that makes sense, obviously I am new to this and learning as I go.  
Thank you.