We have hull 1221, 2022 model. First time at a campground with cable. Tried it out and cannot get channels to scan. We don’t have the switch for an antenna in the attic. Tried hooking coax to both cable and satellite on outside of trailer. Am I missing something? I can get my FireStick to work but hoping to avoid using that if possible. I’m thinking I should try the coax directly into tv in case it’s the wiring on the trailer. Thanks for any tips and tricks.