Remember there's also BeiDou, Galileo, and GLONASS as well. Our RTK base station (a Ublox ZED-F9P receiver, with a cheap patch antenna on the roof) can current

Remember there's also BeiDou, Galileo, and GLONASS as well. Our RTK base station (a Ublox ZED-F9P receiver, with a cheap patch antenna on the roof) can currently see 45 GNSS satellites.