Radio Calibration not appearing

Pixhawk: 2.4.8
FlySky FS-16X
Software: Mission Planner
I can’t connect to the radio, the transmitter is able to connect to the receiver but on the Radio Calibration Tab on Mission Planner the channels do not even appear. Has anyone dealt with this issue or knows how to deal with it? I would appreciate any guidance or ideas.

Many people with those radios report this. On the Transmitter set the protocol to PPM/Sbus/iBus whichever of these is available. And of course connect the correct output pin of the Receiver to the RCIN pin of the Flight Controller.

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