Unstable RTK fixed

GPS/GNSS Development Boards
1

Dear spartkfun team,

I have these two modules:

Base: https://www.sparkfun.com/products/17369

Rover: https://www.sparkfun.com/products/16481

I have followed this tutorial to configure them: https://learn.sparkfun.com/tutorials/se … rtk-system

In the picture I show you a provisional setup where I get RTK Fixed but it varies a lot and very fast between RTK Fixed, RTK Float, DGNSS and sometimes it goes back to 3D. It does not stay constant in RTK Fixed.

base-rover.jpeg

The next setup I did was to change the rover antenna and put it on a tripod to put it higher. I get the same results.

The signal is good.

Why does it vary so much, is it normal?

Any solution to get more stable RTK Fixed?

Thank you for your help.

base-rover.jpeg
base-rover.jpeg1080×1920 540 KB

2

Thanks for reaching out to us on this.

The 2 main things I would check are to ensure that the grounding plate is connected/functional and enabling the error-correction/RTCM modes mentioned in the hookup guide you linked https://learn.sparkfun.com/tutorials/gp … …and/or starting all the way over at the top, and beginning the process anew with default settings (a pin, but sometimes the fastest path forward)

Always be sure to have a clear line-of-sight to the sky as well!

Hope this helps, and happy sparking!