If it is a new "DishPro" LNB, the two lnb's have the switch built in. The two outputs allow you to run two receivers if desired. I have this setup, and run one coax to the trailer, and pick up both 110 and 119. You can easily tell whether the dish is a dishpro, by looking at the LNB. It will have a big DP on it in black letters.
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