The compact OEM-1 GNSS receiver board uses proven Paradigm G3 technology to provide high accuracy heading determination simultaneously with centimeter-level RTK positioning in challenging environments. Low power consumption, comprehensive communication interfaces and peripheral support make the OEM-1 extremely flexible and easy to integrate into any precise positioning application. The OEM-1 is also electrically and mechanically compatible with other 60x100mm OEM boards, allowing a quick and easy retrofit to a superior Topcon positioning engine.