Benchmark Supply F8 & eBase Base and Rover GPS Surveying PackageSpecifications GNSS Performance Channels: 1408 Supported Constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS RTK Accuracy: 8 mm + 1 ppm (H), 15 mm + 1 ppm (V) Initialization Time: <10 sec Reacquisition Time: <1 sec Cold Start: <45 sec Initialization Reliability: >99. 99% UHF Radio Communication eBase: 5W UHF radio, 410470 MHz, up to 25 km range F8: 1W UHF Radio, 410 470 Mhz, , 38 km range Power & Battery eBase Power Source: (2)x 7. 4V 7. 0Ah Non