That is what you need. Connect it into your system and get it authorized, then move it to the rv. One caveat, you should have the same swm type setup in the rv in case you want to move the receiver back to the house. It will make the process simpler.
Just so I'm correct the H24 does not need to be on the same coax in the house? It can be hooked up to a separate dish in the rv right?