940-2209-10 Hemisphere 14289.00  

Hemisphere S631 Smart Antenna Kit (940-2209-10)

Hemisphere Part Number: 940-2209-10

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S631 GNSS Smart Antenna


  • Multi-frequency GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, and Atlas L-band
  • Long-range RTK baselines up to 50 km with fast acquisition times
  • UHF (400 MHz & 900 MHz), cellular, Bluetooth, and Wi-Fi wireless communication
  • Athena GNSS engine providing best-in-class RTK performance
  • Internal sensor corrects collected point coordinates to within 2 cm

The S631 is Hemisphere’s all-new multi-GNSS, multifrequency smart antenna. The S631 provides robust performance and high precision in a compact and rugged package. With multiple wireless communication ports and an open GNSS interface, the S631 can be used in a variety of operating modes. Use the S631 as a precise base station sending RTK to your existing rover network. Turn S631 into a lightweight and easy to use rover by connecting it to your base via UHF radio or cellular network. The built-in web user interface (WebUI) can be used to monitor and control the receiver status and operation, as well as to upgrade the S631 with new firmware and activations. S631 is Athena-enabled and Atlas®-capable (subscription required).

The S631 GNSS receiver is powered by Athena RTK technology. With Athena, S631 provides state-of-the-art RTK performance when receiving corrections from a static base station or network RTK correction system. With multiple connectivity options, the S631 allows for RTK corrections to be received over radio, cell modem, Wi-Fi, Bluetooth, or serial connection. S631 delivers centimeter-level accuracy with virtually instantaneous initialization times and cuttingedge robustness in challenging environments.

The S631 receiver also enables users to work with Atlas. Atlas is Hemisphere’s industry-leading global correction service, which can be added as a subscription to the S631. Atlas delivers world-wide centimeter-level correction data over L-band communication satellites. With Atlas, S631 users experience sub-decimeter positioning performance anywhere on earth, without the need to be near a GNSS or communication infrastructure.

The S631 will offer deci-metre (10-15cm horizontal) real-time accuracy, when paired with a current Atlas H10 subscription (no messy post-processing).

For a copy of the S631 User Guide, please click here to download.


GNSS Receiver Specifications

Receiver Type
  • Multi-Frequency GPS
  • BeiDou
  • Galileo
  • QZSS
  • and Atlas L-band
Signals Received
  • GPS L1CA/L1P/L1C/L2P/L2C/L5
  • GLONASS G1/G2/G3, P1/P2
  • BeiDou B1i/B2i/B3i/B1OC/B2A/B2B/
  • IRNSS L5
  • Atlas
Channels 800+
RTK Formats
  • RTCM2.1
  • RTCM2.3
  • RTCM3.0
  • RTCM3.1
  • RTCM3.2 including MSM
Intervals Selectable from 1, 2, 4, 5, 10 Hz (20 Hz or 50 Hz optional)


  • Autonomous, no SA
    • RMS (67%): 1.2 m
    • 2DRMS (95%): 2.4 m
  • SBAS
    • RMS (67%): 0.3 m
    • 2DRMS (95%): 0.6 m
  • Atlas (H10)
    • RMS (67%): 0.04 m
    • 2DRMS (95%): 0.08 m
  • RTK
    • RMS (67%): 8 mm + 1 ppm
    • 2DRMS (95%): 15 mm + 2 ppm
  • Static Performance
    • RMS (67%): 2.5 mm + 1 ppm
    • 2DRMS (95%): 5 mm + 1 ppm
  • Tilt Compensation (within 30°)
    • RMS (67%): 2 cm (with 1.8 m pole)
Initialization Time < 10 s

L-Band Receiver Specifications

Receiver Type Single Channel
Frequency Range 1525 to 1560 MHz
Sensitivity -130 dBm
Channel Spacing 5.0 kHz
Satellite Selection Manual and Automatic
Time 15 seconds (typical)


Bluetooth Bluetooth 2.1+EDR / 4.0 LE
Wi-Fi 802.11 b/g
  • LTE FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/
  • B18/B19/B20/B25/B26/B28
  • LTE TDD: B38/B39/B40/B41
  • UMTS: B1/B2/B4/B5/B6/B8/B19
  • GSM: B2/B3/B5/B8
  • Frequency range: 410MHz ~ 470MHz and 902.4MHz ~ 928MHz
  • Channel Spacing: 12.5 KHz / 25 KHz
  • Protocol: TrimTalk 450S, PCC EOT, TrimMark III(19200)

To upgrade software, manage status and settings, data download, via smartphone, tablet or other electronic device, configure advanced radio settings

Connector Ports

TNC For connecting to UHF radio antenna
LEMO 5-pin For connecting to external power supply, external radio
LEMO 7-pin For serial port, USB
Card Slots For Micro SIM card and Micro SD card

Data & Storage

Storage Type 8 GB internal, SD card up to 32 GB


Weight 1.19 kg (1 battery), 1.30 kg (2 batteries)
Dimensions 156 x 76 mm


Operating Temperature -30°C ~ +65°C
Storage Temperature -40°C ~ +80°C
Protection IP67. Protected from temporary immersion to a depth of 1 m
Shock Resistance
  • MIL-STD-810G, method 516.6.
  • Designed to survive a 2 m pole drop on concrete floor.
  • Designed to survive a 1 m free drop on hardwood floor
Humidity Up to 100%
Vibration MIL-STD-810G, method 514.6E-I
Inflammability UL recognized, 94HB Flame Class Rating (3) 1.49 mm
Chemical Resistance Cleaning agents, soapy water, industrial alcohol, water vapor, solar radiation (UV)


Input Voltage 9 to 28 V DC
Battery With removable dual battery, for single battery parameter: 7.2 V, 3400 mAh, 24.48 Wh
Working Time 12 hours in Rover UHF mode (2 batteries)

User Interface

Button Switch receiver on/off, broadcast current operation mode and status
LEDs Power, Satellite, Data Link, Bluetooth
WebUI Supports software updates, receiver status and settings, and data downloads via smartphones, tablets, or other Wi-Fi capable devices.

In The Box

  • 1 x S631 Smart Antenna (Satel UHF Radio Edition), with RAW, L2 mFreq, RTK, 10Hz unlocks
  • 1 x Serial Cable (7-pin) 051-0390-0
  • 1 x Serial Cable (5-pin) 051-0392-0
  • 1 x 900MHz Antenna 150-0058-10
  • 1 x QT400-T UHF Antenna (TNC) 150-1026-0
  • 1 x 12V Cigarette Lighter Adapter 427-0064-0
  • 2 x BP-5S Batteries 427-0067-0
  • 1 x Dual Battery Charger 427-0069-0
  • 1 x Battery Charger Adapter 427-0081-10
  • 1 x Tape Measure
  • 1 x Quick Release
  • 1 x Grey Case
  • 1 x BONUS 6-month Atlas H10 On-Shore (Land) Subscription

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