Continuing the discussion from Proper workflow for RTK Survey-In on LC29HEA: Automated vs. Manual coordinate injection?:
Hallo community
LC29HEA as base and a second LC29HEA as rover.
I have the same problem. I get the RTCM3 messages from the base.
I send the messages to the rover. I get the GNGGA and the GNRMC message, but it never goes to RTK mode.
What I am doing wrong? 
Thx for any hint. Willi