The receiver sends signals to the dish over the coax to select the proper satellite azimuth and polarity for whatever channel that receiver is tuned to. The only way to be able to have multiple receivers all tuned to different channels is to have a dish with multiple coax outputs and one coax running to each receiver. You can't split it like you could your old school off air and cable signals.
2013 Roo 183
2012: 1042 Miles, 13 Nights camped
2013: 2772 Miles, 27 Nights camped
2014: 2259 Miles, 30 Nights camped
2015: 1644 Miles, 20 Nights camped
2016: 550 Miles, 11 Nights camped