Okay, here is what both of our cable TV companies had to say about the new All Digital TV Signal.
Digital TV adaptersIf you check with the campground office you can find out for sure if you need an adapter.
In short, in my RV(26years old) but BluRay wired. I can use the winegard antenna, and campground cable(with an adapter) at the same time, I can have the BluRay player on too.. You select what signal you will use in the INPUT section of your TV's remote.
Here another link, this is for a video control center, also known as a BOMB. This Winegard box may be out of production but many places still sell them. They are very helpful. I'd explain more but it's not what you asked about. PM me and I will expand on the BOMB