TV is a minefield to those who don't understand it. Over-the-air TV signals are now digital. If your TV set(s) are analog, you need a digital to analog converter to get TV through your roof antenna.
Campground cable systems can also have digital/analog issues. Our S&B is in an area provided with cable TV by Comcast. For many years the signal coming out of the wall jack was analog, which the older TV tuners could handle. About 5 years ago, Comcast went digital, but they used a different signal standard than that used by o-t-a stations. This requires a set-top box or a digital video recorder to act as a translator between Comcast's digital signal and your analog TV which has to be set to Channel 3. The Comcast remote takes care of channel assignment, and some other functions, but display settings (color, contrast, etc.) are still under the control of the TV set's original remote.
We've concluded that trying to use the TV when we're on a trip is difficult at best and a PITA otherwise. Unless a CG has cable that puts out an old-fashioned analog signal, we don't bother trying to hook up.
Watching TV is a very low priority when we're on the road, so it's not a big deal when we can't do so. At home we can get CBC-Vancouver or Victoria and watch it more than any other channels. When we're further south we're not that concerned (except DW can't get Coronation Street). News and weather are about all we want to see and we can get enough information by radio or on our laptop computer.
If anyone would like a driving lesson through this minefield, send me a PM.
Frank and Eileen
No longer RVers or FR owners