In short, your Direct or DISH receiver has to have a HOME RUN cable run from the physical dish to the receiver. Run it in a window, drill a hole, OR many newer RV/TT's now figured this out and the existing cable IS a home run. But if not, it has to be.
Till then, you're barking at the moon for Satellite reception!
I spent 2 years worrying over this with last TT.
ONLY use RG6, NOT RG59 for coax. Use as short a run as you can.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS