A friend is thinking of getting dish network with local. so I think he needs dish 500 and dish 300 since some locals require dish 300 in our area (San Francisco Bay area). His house is pre-wired with two RG6 from outside to a central closet inside the house, then there is a home run (with two RG6 cables) to every room from the central closet. My question is: since there are only two cables into the house, is he limited to two receivers (or one receiver that has two tuners) ? Thanks.