I am flying in the mountains and I hope to geotag my pictures using PPK. Using the ublox LEA-6H with the 3DR settings works good, using a CSG-shop ublox NEO M8N (GPS+GLONASS) with a square pcb works far better than the LEA-6H (GPS only), but using a CSG-shop ublox NEO M8N (identical configuration file as the square) with a round pcb is a complete desaster - being a beginner I have no clue why, as the ‘round’ should be identical or even better then the ‘square’ because of bigger ground plane. The reach using a 10cm ground plane would be good, but it looses the solution status single very often (positioning mode: static), none of the three other GNSS shows this behaviour. PLEASE improve this.
It would be nice to have access with u-center to the GNSS.