Hemisphere GNSS C631 GNSS Smart Antenna
Centimeter-Level Accuracy with Long-Range RTK Support.
Hemisphere GNSS C631 GNSS Smart Antenna supports GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, and Atlas L-Band corrections. Powered by Athena RTK, it delivers centimeter-level accuracy with fast acquisition times. With UHF, cellular, Bluetooth, and Wi-Fi connectivity, it's ideal for precision tasks like surveying and mapping. The IP67-rated enclosure ensures durability in challenging environments.
C631 GNSS Smart Antenna Technical Specifications
GNSS Receiver | |
Receiver Type | Multi-Frequency GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, 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/ ACEBOC GALILEO E1BC/E5a/E5b/E6BC/ALTBOC QZSS L1CA/L2C/L5/L1C/LEX IRNSS L5 Atlas |
RTK Formats | RTCM2.1, RTCM2.3, RTCM3.0, RTCM3.1, RTCM3.2 including MSM |
Accuracy | |
Positioning | RMS (67%) |
Autonomous, no SA: | 1.2 m |
SBAS | 0.3 m |
Atlas H10 | 0.04 m |
RTK Static | 8 mm + 1 ppm |
Performance Tilt | 2.5 mm + 1 ppm |
Communications | |
Bluetooth | Bluetooth 2.1+EDR / 4.0 LE |
Wi-Fi | 802.11 b/g |
Network | 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 |
Radio | Frequency range: 410MHz ~ 470MHz and 902.4MHz ~ 928MHz Channel Spacing: 12.5 KHz / 25 KHz |
Data & Storage | |
Storage Type | 8 GB internal, SD card up to 32 GB |
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 |
Electrical | |
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) |
Mechanical | |
Dimensions | 156 x 76 mm |
Weight: | 1.19 kg |
What Is the C631 GNSS Smart Antenna Used For?
Typical applications of the C631 GNSS Smart Antenna include:
Precision agriculture guidance and auto-steering
Machine control for construction and mining equipment
Autonomous vehicles and mobile robotics
Marine positioning and heading
Fleet management and telematics
Frequently Asked Questions
What is the C631 GNSS Smart Antenna?
Hemisphere GNSS C631 GNSS Smart Antenna supports GPS, GLONASS, BeiDou, Galileo, QZSS, IRNSS, and Atlas L-Band corrections. Powered by Athena RTK, it delivers centimeter-level accuracy with fast acquisition times.
What is the advantage of a smart antenna like the C631 GNSS Smart Antenna?
A smart antenna combines the GNSS receiver and antenna in one sealed housing, so the C631 GNSS Smart Antenna delivers positioning over a single cable interface without a separate receiver box — reducing installation time, cabling and integration effort.
Where is the C631 GNSS Smart Antenna available?
The C631 GNSS Smart Antenna is available through Leo Drive in the following region: Turkey. For other regions, please contact Leo Drive.
How can I get the datasheet and technical documents for the C631 GNSS Smart Antenna?
The datasheet, user manual and other technical documents for the C631 GNSS Smart Antenna are available on the manufacturer’s website. You can also contact Leo Drive for documentation and integration support.
Explore More at Leo Drive
The C631 GNSS Smart Antenna is part of the Smart GNSS Antennas range at Leo Drive. Browse all autonomous vehicle sensors and components, or talk to our engineering team about integration in your project.

