I had for what ever reason UBX-RXM-MEASX-Uart1 enabled and had in RTKLIB messages 0x02 0x04.
When looking in the F9P interface description, i see this: 5.15.1 UBX-RXM-MEASX (0x02 0x14).
It took a while to realize that this was the RXM-Meas : When I switch UBX-RXM-MEASX-Uart1 off the messages 0x02 0x04 (1492length) disappear.
Is this a bug in the docu or in the firmware ? I use HPG 1.10
I am aware that RXM-MeasX is not very usefull, but I was hunting unnecessary messages to reduce bandwidth and was not able to find the switch for them.