To have both dishes signal to one sat. receiver you have to use 2 way "diseqc". two input and 1 output. To have the both dishes to 2 sat. receivers use dual LNB to each dish and again 2 pcs of 2 way diseqc. The other option is to use single LNBs but the cable from each LNB to go to a switch and then 2 cables out to each diseqc.