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Stonex S900A GNSS Receiver

The Stonex S900A GNSS receiver is equipped with an high performance GNSS board, 600 channels and capable of supporting multiple satellite constellations.



The Stonex S900A GNSS receiver is capable of tracking GPS, GLONASS, BeiDou and Galileo signals, as well as L-Band corrections with an Atlas subscription. The S900A features aRTK technology that greatly mitigates the impact of land-based communication instability. aRTK is delivered via satellite for uninterrupted centimetre level positioning in areas where local RTK communication links are unstable.

The S900A features a new, high accuracy multi-constellation antenna, a powerful UHF transmitter and a GSM 4G modem combined with a light and modern design. Bluetooth and Wi-Fi capabilities allow for reliable data flow to the controller, and the integrated TX/RX UHF radio modem with selectable frequencies, make S900A the perfect solution for a GNSS Base + Rover.

The S900A contains an integrated E-Bubble sensor that allows the measurement of difficult points with the pole not level. It is possible to measure points with a pole incline of 30° even in harsh environments and in the presence of magnetic fields. You can view the bubble through the software without having to check the bubble of the pole.

With the Stonex S900A, it is possible to insert 2 smart hot swappable batteries at the same time, providing up to 12 hours of operation on a single charge. The power level can be checked and seen on the controller or directly on a led bar on the battery.

The S900A has an IP67 rating for water and dust. It is also designed to be able to withstand a 2 meter pole drop onto a concrete floor with no damage. This makes the S900A tough enough for even the harshest environments.


  • 600 channels to track GPS, GLONASS, BeiDou and Galileo
  • L-Band capable with Atlas subscription
  • Features aRTK technology that greatly mitigates the impact of land-based communication instability
  • E-Bubble sensor allows for accurate measurements even when pole is not level
  • Advanced technology for fast initialization and reinitialization time
  • Web UI to monitor and change settings
  • 2 hot swappable batteries that provide up to 12 hours of operation on a single charge
  • IP67 rating for water and dust
  • Designed to withstand 2 m pole drop onto a concrete floor with no damage

Technical Specifications

Channels: 600
GPS: L1 C/A, L1C, L2C, L1P, L2P, L5
BeiDou: B1, B2, B3
Galileo: E1, E5a, E5b
QZSS: L1 C/A, L1C, L2C, L5
SBAS: L1, L5
L-Band: Atlas H10/H30/H100
Position Rate: 5 Hz, optional 20 Hz
Signal Reacquisition: < 1 sec
RTK Signal Initialization: Typically < 10 s
Hot Start: Typically < 15 s
Initialization Reliability: > 99.9 %
Internal Memory: 8 GB
Battery: 2 rechargeable and replaceable intelligent lithium batteries
7.2 V – 3400 mAh
Voltage: 9 to 22 V DC external power input with over-voltage protection (5 pins Lemo)
Working Time: Up to 12 hours
Charge Time: Typically 4 hours
Dimensions: 157 mm x 76 mm
Weight: 1.19 kg (one battery)
1.30 kg (two batteries)
Operating Temperature: -40 °C to 65 °C
Storage Temperature: -40 °C to 80 °C
Waterproof/Dustproof: IP67
Shock Resistance: Designed to endure to a 2m drop pole on concrete floor with no damage
Vibration: Vibration resistant



The Stonex S900A GNSS receiver 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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