only one receiver (the one connected via the motor) can move a dish
the second receiver connected direct to the twin output lnb is a slave only, it can only "see" the satellite that the MASTER receiver has told the dish to go to
so MASTER receiver moves the dish , the SLAVE receiver doesnt move the dish
connect an A-B switch if you want both receivers to move the motor and dish, albeit only one can do this task at any one time
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