Tracking GPS, GLONASS, Galileo and BeiDou signals, the RS2 can provide a fixed solution in seconds and maintain accuracy in corridors, under tree canopy, and in other challenging environments.  
GPS, GLONASS, BeiDou, Galileo, and QZSS
L1OF, L2OF, L1C/A, L2C,E1B/C, E5b, B1I B2I