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Trimble AX940 GNSS Smart Antenna


The Trimble AX940 is a triple-frequency GNSS smart antenna with MSS band demodulator designed for a broad range of high-precision applications such as precision agriculture, milling machines in construction, forestry harvesting equipment, autonomous vehicles, port automation and mobile mapping.



The Trimble AX940 GNSS smart antenna offers multi-frequency, multi-constellation support for GPS, Galileo, GLONASS, BeiDou, QZSS and NavIC. It can deliver reliable centimeter-level accuracy in a variety of environments. In addition, the Trimble AX940 delivers reliable, high-accuracy positioning without the constraints of a local base station or cell modem using Trimble RTX™ correction services.

The AX940 GNSS smart antenna supports both triple frequency for the GPS and GLONASS constellations plus dual-frequency from BeiDou and Galileo. As the number of satellites in the constellations grows, the AX940 is ready to take advantage of the additional signals. This delivers the quickest and most reliable RTK initializations for 1–2 centimeter positioning.

For applications that do not require centimeter accuracy, the AX940 delivers high accuracy GNSS, DGNSS positions in the most challenging environments such as urban canyons. Different configurations of the module are available. These include everything from a DGPS L1 unit all the way to a four constellation, triple-frequency RTK unit. Choose the receiver that suits your application and price point. All features are password-upgradeable, allowing functionality to be upgraded as your requirements change.

With the option of utilizing OmniSTAR or RTX services with Integrity Monitoring, the AX940 delivers varying levels of performance down
to centimeter-level without the use of a base station or cell modem.

Industry professionals trust Trimble embedded positioning technologies as the core of their precision applications. With the latest Trimble Maxwell™ 7 Technology, the AX940 provides assurance of long-term future-proofing and trouble-free operation. Moving the industry
forward, the Trimble AX940 redefines high performance positioning:

  • 336 Tracking Channels
  • Trimble Everest Plus multipath mitigation
  • Advanced RF Spectrum Monitoring and Analysis
  • Proven low-elevation tracking technology

The Trimble AX940 was designed for easy integration and rugged dependability. Customers benefit from the Ethernet connectivity available on the board, allowing high speed data transfer and configuration via standard web browsers. CAN, USB and RS-232 are also supported. Just like other Trimble embedded technologies, easy-to-use software commands simplify integration and reduce development times. An intuitive 3D interactive graphical web page allows easy input of lever arms.

The unit comes in an environmentally sealed enclosure that is very easy to install. The unit is rigorously tested to perform in harsh
environmental conditions with the reliability you expect from Trimble.


  • Trimble Maxwell 7 Technology
  • 336 Channels for multi-constellation GNSS support
  • Trimble RTX and OmniSTAR Support
  • Rugged IP67 Smart Antenna Compact design for mobile applications
  • Flexible RS232, USB and Ethernet interfacing
  • Centimeter-level position accuracy
  • Advanced RF Spectrum Monitoring

Technical Support

Channels: 336
GPS: L1 C/A, L2E, L2C, L5
Galileo: E1, E5A, E5B, E5AltBOC
BeiDou: B1, B2
SBAS: L1 C/A, L5
MSS L-Band: OmniSTAR, Trimble RTX
Dimensions: 221 mm x 218 mm x 52 mm
Weight: 0.66 kg
Connector I/O: 26-pin Tyco SUPERSEAL
Voltage: 9 VDC to 30 VDC

Typical 3.0 W (L1/L2 GPS + L1/L2 GLONASS)
Operating Temperature: –40 °C to +70 °C
Storage Temperature: –40 °C to +80 °C
Vibration: 9.8 gRMS operating
Mechanical Shock: MIL810D
±40 g 10ms operating
±75 g 6ms survival
Operating Humidity: 5% to 95% R.H. non-condensing, at +60 °C
IP Rating: IP67


The AX940 GNSS smart antenna from Trimble is available through TerrisGPS. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.

  • Module part number: 129400-XX
  • Available in a variety of configurations from L1 SBAS upwards

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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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