GR-I3 INTEGRATED GNSS RECEIVER Sign in or sign up for myTopcon to view this page: Sign In Sign Up RELATED PRODUCTS X-53x Excavator QUICK GUIDES GR-i3: How to connect via Bluetooth to a Windows 7 PC GR-i3: How to connect via Bluetooth to a Windows 7 PC This article explains how to connect a GR-i3 via Bluetooth to a Windows 7 PC for use with Topcon Receiver Utility. See More