Trimble R4 GPS

Features : - 220-channel system with Trimble R-Track satellite tracking technology. - Scalable from post processing to VRS to multi-constellation RTK configurations - The flexibility to choose the level of GNSS support that is perfect for your application. - Everything you need to perform a basic survey campaign - Pair with Trimble Access and the new Trimble Slate Controller for a dedicated GNSS solution that is effective for both real time and post processed GNSS surveys Designed for surveyors looking for easy-to-use GNSS technology that performs under even the most rigorous conditions. A Complete GNSS System : - Lightweight, convenient and cable free - Dual-frequency antenna enhances tracking capacity - Delivers sub-millimeter phase center stability - Internally powered with removable batteries - Comes standard with GPS L1, L2, L2C and QZSS - Choose the level of GNSS support you require with flexible upgrade options including GLONASS , Galileo and BeiDou ( COMPASS) Advanced Trimble R-Track Technology : - Integrated in to the Trimble R6, Trimble R-Track technology delivers: - Reliable, precise positioning performance - Signal Prediction compensates for intermittent or marginal RTK correction signals - CMRx communications protocol provides correction compression for optimized bandwidth and full utilization of all the satellites in view Functions as a VRS Rover, RTK Rover or Field Base Station : - Use as a lightweight rover for static surveying or RTK - Compatible with Trimble VRS solutions - Built-in 450 MHZ receive only radio or a fully integrated GSM/ GPRS radio - Integrated UHF transmit option