Since I've had DISH network at home since it was invented, I added an in motion satellite receiver on the roof of my 'C'. Stupid. For starters, I'm a single RVer, so I can't watch TV when I'm driving. Also, the DISH has to have a clear shot at the satellite, so no trees in the CG that blocks transmission. Besides, I overnight at CGs with water, electric, sewer and cable. I'd remove it, but there's a rather large hole in the roof for the wiring.
I thought that I'd at least get some use from it when I took a 4 month round trip to Alaska. But the curvature of the earth ruined that. So its still up there, but all it does is seal up the hole in the roof.