Why could GPS2 be performing slower/worse than GPS1?

Hi all!

We are using two drotek RTK GPS modules on our drone. The strange issue we have is that GNSS#2 (No mather which module, just connected as GPS2) has always a lower fix type value than GPS#1. I have checked the paramerer file on the PixHawk and don’t see a parameter that is not set for GPS#2 (or neither set with a different value than GPS#1).
Have you had any similar issues by using two gps modules on a pixhawk?

Huge appreciation for any suggestions.


Assuming you just want two independent positioning sources, is GPS_INJECT_TO=127?

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Yes it is set to 127. Could it be that the pixhawk somehow configurates GPS2 different than GPS1 when auto config is enabled?