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Topcon B111A GNSS OEM Board

The Topcon B111A GNSS OEM board is a compact, lightweight positioning engine offering 226 universal channels for reliable dual frequency tracking.



The B111A GNSS OEM board is a compact positioning engine capable of providing scalable positioning from sub-meter DGPS positioning to sub-centimeter RTK positioning.

The lightweight board offers 226 universal channels for reliable, “all-in-view” tracking of GPS, GLONASS, BeiDou, Galileo, QZSS and SBAS signals. The board’s flexible design—including its low power consumption, comprehensive communication interfaces and peripheral support—make it easy to integrate the B111A into any precise positioning application.


  • Compact, dual-frequency receiver
  • Low power consumption
  • 226 Universal Tracking Channels for reliable “all-in-view” dual-frequency tracking
  • High-performance RTK engine with a position-update rate of 100 Hz
  • Diverse set of interfaces available through a single connector
  • Support for SD card interfaces
  • Quartz Lock Loop (QLL) for continuous operation under intense vibration and shock
  • Scalable performance via software option authorization (OAF)
  • Topnet Live correction services via NTRIP
  • Drop-in replacement for B110 and B111 boards

Technical Specifications

Channels: 226 Universal Tracking Channels
GPS: L1, L2, L2C
BeiDou: B1, B2
Galileo: E1
Velocity: 0.02 m/seconds
Time: 30 nsec
Hot Start: < 15 sec
Cold Start: < 44 sec
Reacquisition: < 1 sec
Size: 40 mm x 55 mm x 10 mm
Weight: < 20 g
Operating Temperature: -40 °C to 85 °C
Storage Temperature: -40 °C to 85 °C
Humidity: 95%, non-condensing
Vibration Rating: 4g Sine Vibe (SAEJ1211)
7.7g Random Vibe (MIL-STD 810F)
Shock Operational IEC68-2-27, 11ms, 40g
Survival IEC68-2-27, 11ms, 75g
Acceleration: 20 g
Input Voltage Range: +3.4 to +4.5 VDC
Power Consumption: 1.3 W typical


The B111A GNSS OEM 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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