Yes you would need a swm8. All 4 lines from the LNB go in to it then one cable goes into the swm from the PI (power inverter) and then the output side of the PI you use power passing splitters to each cable run, at the receiver end you use another power passing splitter and then run a line to each input on the reciever. They make a 4 way power passing dplitter that the line fron the PI goes into and then all you need to do is connect each run to it.