I know these are obvious suggestions so please bear with me. Make sure the tv is set to cable and not antenna Make sure the antenna booster is off (no green light showing) Try changing the cable from the tv to the other available jack on the wall plate. If those items are set correctly and you still have no signal try connecting the campground cable directly to a tv to see if it that works. Make sure to do the channel scan and when all is up and running..... NASCAR is on Fox!
We brought our coach to the campground yesterday and set up to find the cable system had been turned off due to service providers being changed#@$%@#. Ha you should have seen the long faces walking around. However the popup people were happy and didn't even notice. They had a great time. Maybe with all the bells and whistles we forgot about the simple life of camping. NAAHH! Been there did that and we love all the whistles. TOOT TOOT!
If the picture is grainy, you must be picking up some Analog stations as and Digital Stations will be clear or nothing, or drop in and out.
Michelle & Ann
2018 Chevy 3500HD Crew Cab High Country DRW, D/A, 2016 RW39MB, Dual ACs, Auto Level, Auto Sat Dish, Stack W/D, King Sleep #, 17.5" Sailuns w/Disc, MORryde IS & Pin, Comfort Ride Hitch, 5.5 Onan, Res Fridge & Induction Cook Top
The last campground with cable that I stayed at had analog cable. About half of the stations were grainly with a couple so bad you couldn't watch them. We connected the cable directly to the television and the graininess all but disappeared. That's when I discovered I had some loose cables and one that was pinched and damaged by the entertainment center slide out. I haven't hooked up to cable since fixing them so I don't know if the problem has been fixed.