But according to:
And other sources, HopeRF RFM9X are chinese clones of the original semtech sx127X, and these things works using same LoRa.h library from sandeep. So, i guess are practically identical.
Also, i checked MySensors.h compiler definitions, where can be seen 868 and 433 freq are allowed.
So, these radios maybe works...¿!?¿!