TOPCON GR-3 GPS system

TOPCON GR-3 GPS system 100% compatible with the three major satellite systems (GPS + GLONASS + GALIEO) of all available signals 1.72 super-universal tracking channels 2. Ultra-Low Power 3.Support for Bluetooth communication 4.Rugged design, anti-2 m fall 5.Optional built-in GSM / GPRS Module Key Indicators Model:GR-3 Tracking signal: GPS1/L2/L5 carrier CA, L1P, L2P, L2C; GLONASS L1/L2/L5 carrier L1CA, L2CA, L1P, L2P; Gallileo E2-L1-E1, E5a, WAAS / EGNOS Number of channels: 72 super-universal satellite tracking channels Cold start time:less than 60 Hot start time:less than 10 Re-acquisition time: less than1 second Accuracy Static Rapid Static: Flat: 3mm +0.5 ppm Height: 5mm +0.5 ppm RTK: Flat: 10mm +1 ppm Height: 15mm +1 ppm DGPS: better than 25cm