... Detailed Product Description GPS/LONASS/BEIDOU Rubidium Synchronous Clock Receiver receives GPS, GLONASS, BEIDOU, GLONASS synchronous clock signal ... .CC86131(GPS/LONASS/BEIDOU Rubidium Synchronous Clock Receiver) receives GPS, GLONASS, BEIDOU, GLONASS synchronous clock signal ... conditions Compass GPSGLONASS Keyboard: Set the control, station control, the coordinate information