That is what a multiswitch is for. The 4 lines feed a multiswitch. The multiswitch locks each one of the lines into different polarities and even odd. The first 4x8 feeds a second 4x8 which will give him 12 lines.wicketr said:You have 12 lines possible but only one dish with 3 or 5 NLBs? Surely you don't mean that you have 12 independent lines that can all be on different channels at the same time.