Galileo Second Generation is on the way with new and enhanced navigation satellites that will offer novel signals, services and even more precise positioning. But all the work being done to make it happen hinges on this single item at ESA’s Navigation Laboratory at ESTEC. The G2 test user receiver is designed to quantify the improvements the Second Generation will bring compared to current satellite navigation systems and will be used to verify the performance of early receivers processing the first G2 signals in space.