COMNAV N3 GNSS RTK Base & Receiver Set

6-82 VDC | 1.7W | 8GB | 15KM | 1198 CHANNELS | IP67


FloatOr as low as R61,597.50 / month interest-free, using your existing credit card. For orders over R3,000.00.How it works


The ComNav N3 Base & Receiver Set features 1198 channels of tracking all running and planned constellations, enhanced UHF for up to 15km working range, improved high precision IMU, low power consumption and over 24 hours of working time, the N3 receiver makes it work-efficient and energy-saving for your survey tasks.

Terms & Conditions

  1. This offer is valid for 90 days from date of invoice
  2. Product/s returned to Top Dog Tool Shop must be unused and in brand new condition
  3. Product/s returned to Top Dog Tool Shop must be in original packaging & all original contents must be in the box
  4. Product/s returned to Top Dog Tool Shop will be at the purchaser/owners expense
  5. Product/s will be inspected on arrival at Top Dog Tool Shop. Only product/s which meet the above requirements will be refunded.
  6. Product/s which do not meet the above criteria will be returned to the owner at the owners expense (courier costs). Top Dog Tool Shop will not accept products which do not meet the above requirements
  7. Refund will be in the form of an EFT or Top Dog Tool Shop Voucher. No cash refund option available
  8. Refund will take place within 48 hours of approval of the return.
  9. If the plug has been changed on the tool or charger, the tool cannot be returned
  10. This offer is only valid for product/s purchased from Top Dog Tool Shop
  11. Not applicable to special order/imported products

We offer free nationwide delivery for all orders over R1500.

Any order under R1500 will be charged R175 for delivery

OZOW – Instant EFT: lightning-fast bank-to-bank payments.

Peach Payments – Checkout via Credit/Debit Card or Mobicred.

Bank Transfer – Manually transfer funds into our account.

Mobicred – Finance your purchase entirely or partially up to a maximum of R50,000. Apply Here

Float – For orders over R3000. Up to 4 interest-free installments, using your existing credit card.

In stock with supplier: delivery in 2-4 working days




The ComNav N3 Base & Receiver Set features 1198 channels of tracking all running and planned constellations, enhanced UHF for up to 15km working range, improved high precision IMU, low power consumption and over 24 hours of working time, the N3 receiver makes it work-efficient and energy-saving for your survey tasks.



  • Support GPS, BDS-2, BDS-3, GLONASS, Galileo, QZSS and SBAS tracking.
  • 25 hours long-lasting batteries which in addition, supports hot-swapping and mobile charging.
  • Up to 15km work range with 2W power consumption as well as enhanced UHF
  • IP67 water and dust proof level for harsh environments.
  • High accuracy due to improved IMU and simpler initialization.
  • Industry-leading 1.7W low power consumption.
  • Easily download static data & upgrade firmware due to the powerful web UI
  • In addition, the module supports WiFi/4G/Bluetooth/UHF transmission.
  • The ComNav N3 Base & Receiver Set is integrated with the new K8-platform, N3 is equipped with powerful tracking capability for more than 50 satellites, stronger computing capability and lower power consumption.



  • Survey Master
  • Compatible with most Android devices.
  • Easier survey workflow as a result of the Wizard function.
  • Up to 60° IMU tilt compensation.
  • Supports all survey modes, such as Static, PPK and RTK.
  • Surface Stake, Mapping Survey and more to serve various survey tasks.
  • CAD import and directly use for stakeout operations.
  • Convert function from ComNavBinary raw file to RINEX.



  • SinoGNSS Compass solution software
  • Provide the complete GPS/GLONASS/BeiDou/GALILEO post-processing solution.
  • Supports GNSS observation data in RINEX and ComNav Raw Binary Data formats.
  • Supports different post-processing in static and kinematic modes.
  • Output analysis reports in various formats, such as web format, DXF, TXT, and KML.
  • Supports DJI’s P4R data format.
  • Processing results can be imported into photogrammetry and 3D modelling software directly.


Additional information

Signal Tracking




L1 C/A, L2C, L2P, L5


B1, B2, B3

BeiDou Global Signal

B1C, B2a


L1 C/A, L1P, L2 C/A, L2P


E1, E5a, E5b, AltBOC


L1C, L2, L5, L1C/A, IRNSS1

Performance Specifications

Cold start

<50 s

Warm start

<30 s

Hot start

<15 s

Initialization time

<10 s

Signal re-acquisition

<1.5 s

Initialization reliability


Positioning Specifications

Fast Static

5 mm + 0.5 ppm Vertical

Long Observations

3 mm + 0.1 ppm Horizontal


3.5 mm + 0.4 ppm Vertical

Real Time

8 mm + 1 ppm Horizontal


15 mm + 1 ppm Vertical


<0.4 m RMS


1 m 3D RMS


1.5 m 3D RMS


10cm Horizontal, 20cm Vertical


Serial port (7 pin Lemo)

Baud rates up to 921,600 bps

Enhanced UHF modem

-Tx/Rx with a full frequency range from 410-470 MHz4
-Transmit power: 0.5-2 W adjustable
-Range: 15 km5

WIFI/4G modem

-4G Bands: 800/900/1800/2100/2600 MHz
-3G Bands: 900/2100 MHz
-2G Bands: 900/1800 MHz
-Support GSM, Point to Point/Points and NTRIP

Position data output rates

1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz

5 LEDs

Satellites Tracking, RTK Corrections Data, GPRS, Status, Power

Function Buttons

Power, Static Data Record


V 4.0 protocol, compatible with Windows OS and Android OS


-Calibration-free IMU integrated for Tilt Survey
-Up to 60°tilt with 2.5 cm accuracy

Data Format

Correction data I/O

RTCM 2.X, 3.X, CMR (GPS only), CMR+ (GPS only)

Position data output

– ComNav Binary update to 20 Hz


Size(W × H)

Φ 15.5 cm × 7.3 cm


1.2 kg with two batteries

Operating temperature

-40 °C to + 65 °C (-40 °F to 149 °F)

Storage temperature

-40 °C to + 85 °C (-40 °F to 185 °F)


100% non-condensing

Waterproof and dustproof

IP67, protected from temporary immersion to a depth of 1 m


Designed to survive a 2 m drop onto concrete

Electrical and Memory

Input voltage

6-28 VDC

Power consumption

1.7 W

Li-ion battery capacity

2 × 3400 mAh, 7.4V, up to 25 hours typically


8 GB


-Survey Master Android-based data collection software
-Carlson SurvCE field data collection software (optional)
-MicroSurvey FieldGenius field data collection software (optional)

Scope of Delivery

  • 2x receiver heads (base and rover).
  • 4x internal Batteries.
  • 2x battery chargers.
  • 2x Antenna for the receivers.
  • 1x R550 controller.
  • 1x Tribacht.
  • 1x Base adaptor.
  • 1x set of cables for uploading.

Product Warranty

ComNav machines carry a 1-year warranty against manufacture default. Top Dog Tool Shop is here to support all your after-sale needs. Should a warranty claim occur, Top Dog Tool Shop will facilitate the claim but the approval or non-approval there-of is fully at the discretion of the manufacturer or importer. 


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