I just moved into a new place. It only has one coax coming into the house. I want to run two Dreamlink T5 receivers. I have a Bev dish with two single w/dual outputs (91 and 82). Currently I installed an sw21 switch outside to the single coax coming into the house. Is there a switch I can use inside the house so I can use both receivers. Or do I need to find a way to install a second coax into the house.