72 CHANNEL GNSS Receiver

The CHC X900 is a GNSS survey solution selected by a large number of surveyors for its outstanding performance and reliability. The X900 is a powerful and cost effective GNSS receiver designed for every day field work.


Outstanding RTK Performance

The X900 offers great performance with proven and innovative GNSS functionality. Production is increased by its multi-constellation tracking ability in obstructed sky conditions and urban areas.


Exceptional Performance to Price Ratio

CHC X900 GNSS receiver brings extremely affordable high-end GNSS RTK solution to surveyors without the conventional cost typically associated.

  • 72 channels GNSS core including GPS, GLONASS
  • Outstanding RTK initialization and centimetre accuracy
  • Built-in GPRS modem and UHF data link compatibility
  • Seamless compatibility with major GPS/GNSS manufacturers
  • Small, lightweight and rugged
  • Extremely competitively priced

GNSS characteristics

  • 72 channel satellite tracking
    • GPS: L1, L2
    • GLONASS: L1, L2
    • SBAS
  • Advanced multipath mitigation
  • Low noise carrier phase measurement

Performance specifications*

  • Real Time Kinematic (RTK)
    • Horizontal: 10mm + 1ppm RMS
    • Vertical: 20mm + 1ppm RMS
    • Initialization time: typically <10s
    • Initialization reliability: typically >99.9%
  • Post Processing (Static)
    • Horizontal: 5mm + 1ppm RMS
    • Vertical: 10mm + 1ppm RMS


  • 1x RS232 serial port
  • 1x high-speed USB – Raw data download via USB connection to PC (drag and drop)
  • Integrated GSM/GPRS modem
  • Integrated Bluetooth® Class 2
  • CHC radio modem internal Rx: (Rover & Base) 430-450/450-470 MHz
  • Optional radio modems**
    • External Pacific Crest ADL Vantage Rx/Tx:
      • Tx Rate: 0.5W – 4.0W adjustable.
      • Range: up to 15km
    • External CHC DL5 Radio Tx:
      • Tx Rate: 1W-20W adjustable
      • Range: up to 25km.
      • Bandwidth: 410-430 or 430-450 or 450-470 MHz
      • Protocols:
        • RTCM2.1, RTCM2.3, RTCM3.0, CMR, CMR+  input and output
        • NMEA0183 & GSOF output
        • RINEX and HCN outputs for GNSS raw data
    • Size (LxWxH): 190 x 200 x 84 mm
    • Weight: 1.4 kg with battery
    • Operating Temp.: -30 °C to +65 °C
    • Storage Temp.: -40 °C to +75 °C
    • Humidity: 100% condensation
    • Rugedness:
      • Dustproof & Waterproof: IP67
      • Protected from temporary immersion to depth of 1 meter, floats
      • Survive 2-meter drop onto concrete


    • Power consumption: 2.8W
    • Li-ion Battery capacity : 2200mAh
    • Battery life: 8 hours (Static), typical 5-6 hours (RTK)
    • External power input: 9-18 VDC

    Storage & Memory

    • Internal receiver memory 4GB
    • Receiver mounts as a USB external drive

    Software (optional)

    • CHC’s Landstar field
    • Carlson’s SurvCE field
* Accuracy and reliability specifications may be affected by multi-path, satellite geometry and atmospheric conditions. Performances assume minimum of 5 satellites, using recommended general GNSS sensor practices.
** UHF type approvals are country specific.
*** Specifications are subject to change without notice. All trademarks are the property of their respective owners.