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Topcon GRS-1 Receiver Board


The Topcon GRS-1 has reached End of Life (EOL).



The Topcon GRS-1 Receiver Board offers the user maximized productivity while minimizing costs. It has state of the art signal processing of the GPS/GLONASS and GPS systems can be integrated completely into your system. The receiver is the solution for difficult problems that require a highly functioning positioning and tracking system.


  • 50 MHz ASIC clock speed
  • Paradigm G3 core
  • MPC5200 CPU
  • 72.6 x 62.51 x 9 mm board size
  • 10 cm code phase precision
  • 0.1 mm carrier phase precision
  • 460800 bps maximum serial speed
  • 1 PPS port
  • 4 serial ports
  • 8192 KB ram size
  • External battery backup
  • 5.0 VDC Antenna output voltage


  • 72 Channels
  • Less than a 60 second cold start
  • Less than a 10 second warm start
  • Less than 1 second reacquisition
  • Variety of channels: SBAS, L1/L2/L2C, P(Y), C/A, and GPS/GLONASS


The GRS-1 GNSS receiver board from Topcon is available through TerrisGPS. If you would like more information regarding this product, feel free to get in touch with us by completing the Request Pricing form.

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Client Testimonials

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"Thank you for your prompt service. All seems to be working well again. Your techs were very helpful with the troubleshooting."
J.O. - Ground Navigation
"Thanks for all the troubleshooting help, also to John for his assistance and the prompt answers from you guys!"
F.A. - Survey Industry

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