And my ttnmapper problem has been solved. I was testing indoor and although ttnmapper shows a pretty accurate location it seemingly refuses to plot the measurement on the map, as the location is actually retrieved via wifi positioning instead of gps. Once I got outdoor it worked like a charm. Did some extensive driving today and measured 3 gateways in Almere.
I need to work on the SoDAQ setup in my car, the stub antenna behind the windscreen is not the best benchmark. So looking for a nice magnetic antenna that I can mount on the roof of my car 