• Features
  • Specifications


    Topcon is proud to be the world leader in advanced satellite positioning technology. As the original pioneer of dual-constellation and G3 triple-constellation integration, Topcon continues to lead all other manufacturers with the most sophisticated receiver technology and design.

    One look at the GR-5, and you notice the advanced antenna design. This patented Fence Antenna™ technology provides industry-leading tracking sensitivity and multipath rejection in a compact and lightweight package. By combining this antenna with the latest innovations in tracking algorithms, Topcon has given the GR-5 our most highly advanced tracking performance ever!

    The GR-5’s tracking capabilities are not only state-of-the-art, but also deliver unmatched value to our customers by providing accuracy levels superior to other RTK systems in difficult environments. While other systems sacrifice accuracy for tracking performance, the GR-5 gives you the best of both! The GR-5's design didn’t stop simply with new antenna and tracking technologies, it also boasts numerous advancements such as: an increased number of channels, extended battery life, expanded internal memory options, new internal modem design, internet-compatible firmware, MAGNET software capable and much, much more. It all sums up to… More Performance. More Accuracy. More Productivity.


    • 216 Universal Tracking Channels
    • G3 Tracking Technology (GPS/GLONASS/GALILEO)
    • Advanced Fence Antenna™ Technology - Unsurpassed tracking and performance
    • Sophisticated, High Accuracy RTK technology with position updates up to 100Hz
    • Integrated Dual Communication System with multiple Radio and Cellular combinations
    • MAGNET software compatible
    • 32GB SDHC storage support
    • Dual hot-swappable batteries

    REGISTER YOUR GR-5 - requires TotalCare registration. If you are not a registered member of TotalCare CLICK HERE. If you are a reigstered member of Topcon TotalCare please login HERE and register your GR-5.

    NOTE: 3 Year Bullet Proof warranty only applies to new GR-5 purchases made within the promotional period. Please see your Topcon Dealer for full details.


Number of Channels 226 Universal Channels
Signals Tracked G3 Technology – GPS, GLONASS and GALILEO*
RTK H: 10 mm + 1 ppm
  V: 15 mm + 1 ppm
Static/Fast Static H: 3mm + 0.5ppm
  V: 5mm + 0.5ppm
Optional Radio Type Integrated UHF TX/RX, or 915MHz Spread Spectrum
Base Radio Output 0.01 - 1.0W, user selectable
Cellular Communications Integrated GSM/GPRS or CDMA****
Wireless Communications Integrated Bluetooth® 2.0 compliant
Memory Internal, Removable SD/SDHC Memory Card
Data Update/Output Rate 1Hz – 100Hz Selectable***
Real Time Data Output TPS, RTCM SC104, CMR, CMR+
ASCII Output NMEA 0183 version 2.x and 3.0
Enclosure Magnesium I-Beam Housing
Operating Temperature -40 to +70°C**
Dust/Water Protection IP66
Shock Rating 2 meter pole drop to concrete
  IEC 60068-2-29, IEC 60068-2-27
Vibration Rating SAE J1211, Section 4.7
  MIL-STD 202G, Method 214A
1 Patent pending. Multiple patents are associated with Fence Antenna™ technology.
*GIOVE A/B test satellites are available for signal evaluation and test purposes.
**-30 to +60°C with integrated batteries
***Data rates from 10 - 100hz and higher available as option
****GSM/CDMA available as factory options
† RMS Value unless otherwise specified. Accuracy will vary depending on the number of satellites used, obstructions, satellite geometry (PDOP), occupation time, multipath effects, and atmospheric conditions. Performance may be degraded in conditions with high Ionospheric activity, extreme multipath, or under dense foliage. For maximum system accuracy, always follow best practices for GNSS data collection.