I am upgrading and will be installing my new 3 LNB Dish once the rain stops. I have a new VIP211 and an old 301 & 4700 receivers. What switches will I need to use to connect 3 LNBs to my 3 receivers? I currently have 2 receivers on 1 dish and the third receiver on another dish. I want to get down to a single dish but still remain working with all my receivers until I upgrade them.