the dpp44 is the only switch that will work for the 1000.4 lnb but the lnb is also capable of running 3 receivers anything over that you need the switch the smart card has nothing to do with what orbitals you are pointing at
I'm a dishnetwork technition and if the tech does not have line of site for 129 he will put in 61.5, on the eastern arc response you are to far out of the spot beam for eastern arc