Bobbo wrote:
The simplest/cheapest, and what I did for years, is a D12-100 receiver hooked to a tripod mounted 18" round antenna. You are good to go, SD only.
You don't have to worry about slave units or SWM complications or power inserters.
I got tired of the tripod antenna and bought a VQ2100 automatic antenna for use with my D12-100 receiver, still SD only.
The OP asked how he can use his Genie receiver in his RV. Regardless of whether or not he gets HD or SD, using his Genie provides him with a DVR which your approach does not.