Satellite has to have a direct cable with no splitters between. If you are getting a connection to the basement outlet, sounds like it is wired wrong. Usually bedroom and basement cable outlets are fed through a splitter behind the booster which would give you cable TV and OTA antenna signal to bedroom and basement. I have found two of the four fifth wheel trailers I have owned in the past six years, all different manufactures, there was a problem with the cable wiring. One I never did get any signal to the bedroom, had to run a cable through the window. I think most all RV manufactures must hire 5 year old's to do the television cable wiring.
2014 Cedar Creek 34 RLSA-7
2015 Chevy Silverado 3500HD LTZ SRW