That cable input in your bunk runs to a splitter so it can send park cable to two tv sets. And that line also connects to a power booster for digital. Neither
dish or direct tv sat antenna signals will pass signal thru that input. You need to run a separate line for sat either thru the roof from a roof mount or from a line that runs to a Portable dish. Otherwise you'll need to slam the door on the sat in cable or pop out a screen and crack a window.
I have a roof mount sat dome and ran the line down thru the roof. But also added a second line in from the battery compartment.