H-RTK mosaic-H does not fix as it should

QGroundControl Using QGroundControl
1

Hello everyone, I’m having some issues with RTK.

I’m using:

When I run QGC and switch on the drone, my GNSS receivers start counting satellites (around 24 with status: 3D Lock). After the survey-in of the base, the antennas receive RTK corrections from the base, but the number of satellites drops immediately (to about 12 with status: 3D RTK GPS Lock (Fixed)). How is this possible?

Furthermore, when I move the drone by hand to another location, I lose the RTK fix, and it becomes very difficult to obtain it again. I have a very basic setup with only the dual antenna connected to the carrier board and an antenna for telemetry. There are no rotors or structures; I am testing only the receivers.

Here is a log for reference: https://review.px4.io/plot_app?log=93ce411a-13c6-4d0b-b2c8-c30bf5961f18

I tried different baud rates, from 115200 to 921600, but nothing has changed.
Could you help me?

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2

Hi, I’ve seen your posts on Discord as well. If I knew the answer I would have answered.

Have you considered asking Septentrio? Let’s see if @Septentrio_GNSS is around.

And let me also tag @Vincentpoont2. He might know who to ask.