Looking at the feedback from the reading the AX5043 devices I see two have different PLL vales. The PLL sets the frequency conditions so this may be involved with the two devices that do not seem to be working.

A listing of the register values reported is attached.

Also the code I think is setting these registers. I have not had time to dig into the code. If an issue can be seen by someone that has looked at this code I would appreciate the help.

Bob