2oldman wrote:
I think RG 6 is the recommended grade.
Yes, except for 150' may not work well. And there's different grades, and may want the solid copper center conductor, quad shield. Solid copper center conductor (not copper clad steel) may be what you want if you have a dish with a motor and/or an amp at the dish and don't get the aluminum shielded stuff.
For long runs like 150' you'd probably need RG11 but it's thicker and a lot stiffer and probably don't want it unless needed for sure due to signal loss. RG11 isn't cheap either for the good stuff and you probably want to order it with the connectors pre-installed
Note that it is best to avoid using a connector to join two or more sections of coax, esp. if joining RG6 & RG11 and when long runs are involved. Best thing is one single length of coax from dish to the RV. Do you know if the coax in your RV is RG6 or RG59?