DEWESoft, LLC RTK option for VGPS-HS (HSC)rover or base station modeGPS receiver 2cm L1/L2/GPS/GLONASS RTKGPS antenna L1/L2/GPS/GLONASS, Rates: 100Hz standalone, 100 Hz RTK, 10Hz moving BASEcable set, accessories, suction cup - *RTK-RF-Modem not included.