Originally Posted by dave1993
the real reason 9x has no model match is because the tx can only tx and flysky rx only rx. no two way communication which is required for model match.
2-way communication is not required.
Radio sends out the selected model no along with ID, stick info etc. If receiver sees a different model no than the one it received during binding, it doesn't respond.
It's however not possible to pass the model memory number over PPM to the TX module, so no PPM-based module will do model match.