On a hopper system, can you use 1 feed from the EA Dish, as with the 722 where one line comes in and it is split to go to the two inputs, or should I run a second line to my dish, and while at it, a third. I won't get Hopper until/unless it has OTA.And, can one hopper supposrt 4 Joey's? I only see mention of 3 in the wiring diagram pdf.