Dish Pro Plus / DPP System
You can use a DPP Seperator on any dual tuner Bell Receiver (3200,5200,9200,9242,9241)

The DPP Seperator will allow you to seperate the single feed from the dish into the two inputs.
The DPP Triplexer is a seperator and a diplexer in 1.  (See photo on Left)

It allows you to "backfeed" the TV#2 output back along the single feed from the dish, thus only needing a single line for the feed and the backfeed.

To seperate the input(feed from dish) and the #2 TV(backfeed) you use a diplexer.  (See photo on right)
Second Component is the Separator and Triplexer