You need a 4X? switch. You have an old 3 LNB dish it has 3 separate LNBs receiving signals from 101/110 &119. 101 and 119 use even and odd polarities (12v & 18v) the 110 uses a special LNB that converts the signal to 8/10 &12. This is a Sat"C" kit you have 4 inputs going into the multiswitch and 4/8 or 12 coming out depending on the number of receivers you want to feed. You might want to look for a Phase 3 dish instead of a multiswitch, the 4x4 switch is built into the phase 3 and might be a better buy.