You may want to try another question saying what you are trying to achieve because this one doesn't make much sense however here is a stab at some answers.
You can replace single LNBs with multis e.g. Quad. They are are a straight replacement but the extra weight may cause the arm to droop a little causing a need to slightly realign vertically. They will enable you to drive multiple boxes from one dish.
If you want to point at two satellite, you can get offset LNBs that can do that. They have two outputs and so if you want to drive one STB you will need a switch.
t, March 2008
