Argh! Thanks for catching this, Roger! That is what I meant to type, but got so focused on being clear about the port identification (since it's being connected in "splitter" mode), that I got them backwards.If you do this, I higly reccomend connecting the UVSJ the other way around with the antenna connected to the combined port and the UHF port to the CM7777 to ensure no signal leaks from the VHF port to the amp. I would still terminate the VHF port though.
Yes, definitely something to consider, and would simplify grounding.To avoid the need for a second downlead, you can get a band combiner (such as the EU385-CF) that has power pass on the UHF port, allowing you to put it between your pre-amp and power injector.