GNSS receivers are not all made equal and that makes or breaks the machine’s guidance systems when projects get tough. When GNSS outages occur, due to low satellite visibility or GNSS interference, guidance system operators can easily loose around $1000/day for each idle machine. On top of that, valuable time is lost and workers in the field get demotivated. Having a high quality GNSS (Global Navigation Satellite System) receiver with the right technology inside allows machine control systems to work even in the toughest environments. That is why the Norwegian machine control system manufacturer Gundersen & Løken AS is now using AsteRx4 multi-frequency heading GNSS receivers as part of their 3D guidance system. Thanks to the built-in LOCK+ technology, AsteRx4 receivers track GNSS satellites even under intense vibrations or mechanical shocks, enabling machine guidance in harshest conditions.