SatElite connection for Damon Astoria 2007

I need to add to the above...the problem is that if the total of the cable gets close to or over 100 feet, signal breaks down..I have this in my coach if I try to use the porta cube on the bedroom tv...It goes to a sat in which comes in the coach, I then directly pipe the sat in to the to rear rv and while it sees the cube, it doesn't work right and won't switch channels fast enough..If I use the 50 ft of cube in the window to the bedroom, works just fine..Most of the time, about 90% I am fine with the roof top and have no issues, but 41 feet from rear of coach to front of coach then 40 feet to bedroom tv plus about 25 to 50 feet of cable to cube is just too much cable for the signal to go back and forth...There is no splitter with that connection either...the cable they use in these coaches come from the dollar tree.