Tersus GeoBee
The Tersus GeoBee is a dedicated and
cost-effective solution to transmit or
receive Ntrip corrections.

The Tersus David is a cost-efficient, palm-sized GNSS receiver designed for surveying UAVs, AGVs, and agricultural applications. Working with an external GNSS antenna, the free Tersus Survey App and post-processing software, the David GNSS receiver is a low-cost solution for all survey applications, including real-time RTK positioning and data collection for PPK.

Ntrip server mode: use David GNSS receiver to create a base station. This temporary base or CORS are for surveying, agriculture, UAV, machine control, and etc. It is also ideal for deformation monitoring. Tersus GNSS Inc. provides Ntrip Caster to transfer data. 
Ntrip client mode: connect David or other Tersus GNSS receivers to Tersus Ntrip Caster or any Ntrip/CORS service. David is mainly used for surveying, and also used as a GNSS sensor in various applications, such as mobile mapping, UAV, machine control, agriculture, and etc.



  • Supports GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2

  • Supports 384 channels

  • Supports RTCM2.3/3.x, CMR, CMR+ corrections

  • Supports 4GB internal storage

  • Rapid RTK integer ambiguity resolution

  • Supports stable, high-precision measurement output

  • Supports Ethernet is default while 2G/3G/4G is hot standby





      Chinese Version:

          2G: GSM/GPRS/EDGE/CDMA2000 1x
          3G: UMTS/WCDMA/HDSPA/HSPA+/TD-                       SCDMA/CDMA2000 EVDO

          4G: TDD-LTE/FDD-LTE

      Eurasian version (Europe, Middle East, Africa,        South Korea, Thailand):
          2G: GSM/GPRS/EDGE
          3G: UMTS/WCDMA/HDSPA/HSPA+/TD-                       SCDMA/CDMA2000 EVDO
          4G: TDD-LTE/FDD-LTE

      North American Version:
          4G: FDD-LTE

      Australian Version (New Zealand, Australia,            South America):
          2G: GSM

          3G: WCDMA
          4G: FDD-LTE/TDD-LTE

Operating Frequency
      Chinese Version:
          TDD-LTE B38/B39/B40/B41

          FDD-LTE B1/B3/B8

          UMTS/HDSPA/HSPA+ B1/B8

          TD-SCDMA B34/B39

          CDMA2000 1x/EVDO BC0

          GSM/GPRS/EDGE 900/1800MHz

      Eurasian version (Europe, Middle East, Africa,        South Korea, Thailand):

          TDD-LTE B38/B40

          FDD-LTE B1/B3/B7/B8/B20

          UMTS/HSDPA/HSPA+ B1/B8

          GSM/GPRS/EDGE 900/1800 MHz

      North American Version

          FDD-LTE B2/B4/B5/B17

          UMTS/HSDPA/HSPA+ B2/B5

      Australian Version (New Zealand, Australia,            South America):

          FDD-LTE B1/B2/B3/B4/B5/B7/B8/B28

          TDD-LTE B40

          WCDMA B1/B2/B5/B8

          GSM 850/900/1800/1900


Input Voltage                                12V~48V DC

Operating Current                       350mA @ +12V DC

Standby Current                           250mA @ +12V DC
Power Consumption(typical)       4.2W


Dimension                                    118x91x34mm (w/o connectors)

Weight                                          335g                                                    Operating Temperature              -30℃ ~ +80℃

Relative Humidity                         95% @ +40℃ 


Serial Port                                     RS232 x 1, RS485 x1

Ethernet                                        RJ45 x 2 (LAN, LAN/WAN)

Antenna Connector                     SMA Female x 1    



In the Box

Tersus GeoBee includes

  • 1 x AX3702 GNSS antenna

  • 1 x TNC-J to SMA cable 25m

  • 1 x David GNSS Receiver

  • 1 x Bottom Plate for Fixing David

  • 1 x COMM1-Bluetooth module

  • 1 x Travel Adapter GN901E/GN901G/GN901A

  • 1 x DC-2pin AC Power Adapter with 1.2m cable

  • 1 x COMM1-7pin to TR600-dc-2pin & DB9 male cable

  • 1 x RS232 to RS485 converter

  • 1 x DB9 female to TR600-RS485-5pin cable

  • 1 x USB Type A Female to USB (Micro+Type C) OTG cable

  • 1 x DB9 Female to USB Type A Male converter cable

  • 1 x Ntrip Modem TR600

  • 1 x Bracket and Slide for TR600

  • 1 x 4G antenna for TR600

  • 2 x Ethernet cable 1.5m

  • 1 x carrying case

  • 1 x warranty card

  • 1 x Quick Start

@ 2019 TECPHIL Geosolutions Co.

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