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SPPRTK (Android) app now officially supports the Navisys GR-903 RTK GNSS receiver via USB connection.

GPSWebShop Official@jack

194 Posts

#1 · January 25, 2026, 3:04 pm

Please refer to this document for detail

https://gpswebshop-download.s3.us-east-1.amazonaws.com/navisys/GR-903_SPPRTK_USB_User+Guide_251222.docx.pdf