iRTK4 GNSS RTK System Product Parameters Real-time kinematic precision8 mm H/ 15 mm V Signal trackingGPS, GLONASS, Galileo, BDS, QZSS, SBAS Channels800+ Receive & TransmitSupport multi-protocol radio Hi-RTP (optional) Global Correction Service Download iRTK4-Brochure-EN-20220811T iHand55-Professional-Field-Controller-Brochure-EN-20211108(s) SEND AN INQUIRY