Spektrum Dx8 satellite receiver not binding plugged into pixhawk

I’m trying to set up my px4 in Mission Planner, I binded the spektrum dsmx sattelite receiver to the spectrum dx8 from the main AR8010T rx. I plug it in to the pixhawk port, and connect mission planner, I try to calibrate the radio in mission planner, but the orange light turns off when I turn off the Dx8 transmitter to bind the sattelite rx to the px4. Nothing happens when I wiggle the sticks in mission planner(if I bind to main rx and then plug it into px4).
What am I doing wrong? I keep getting a yellow flashing light on px4, it goes to failsafe. says no radio connection.