A few years ago I paid a DishNework Authorized Dealor to upgrade by dish so that I could receive local stations. As a result I now have a slightly larger dish, 2 LNBFs, 2 SW21 switches. One LNBF is labeled 119 and the other is labeled 110. The LNBF labeled 110 is non-operational and even with it removed I still receive cable channels and local stations. The LNBFs and SW21s are connected as follows: Assume the 119 LNBF's outputs are A & B and the 110 LNBF's outputs are C & D. The connections are: LNBF, A & C are connected to SW21-A and LBNF 110, B & D are connected to SW21-B. SW21-A goes to the DVR\Receiver in the den. SW21-B goes to the receiver in my office. Since LNBF 110 is removed and no C & D connections, what does the SW21s do? What does the 110 LNBF do? I sent DishNetwork an email last Wed. asking them the same question, as of today (Sat.) no answer.