Originally Posted by 11001011
A satellite dual tuner DVR needs two cables because it's two complete satellite receiving systems all the way from the two tuners to the dual LNB on the dish.
This is because two different channels could be on two different transponders and even two different satellites.
Without physically turning the dish you won't be getting a different satellite than your pointed at. But you're right, each sat has multiple transponders and multiple channels per transponder.