COMNAV T300 GNSS RTK 500 Base & Pole Set

5-27 VDC | 3.1W | 8GB | 572 CHANNELS | IP67


FloatOr as low as R49,272.50 / month interest-free, using your existing credit card. For orders over R3,000.00.How it works


ComNav T300 Base & Pole Set features full-constellation tracking capability, tilt compensation, 4G/WiFi connection, 8 GB internal memory and easy survey workflow with Android-based Survey Master Software

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



T300 GNSS survey solution.

ComNav T300 Base Set features full-constellation tracking capability, tilt compensation, 4G/WiFi connection, 8 GB internal memory and easy survey workflow when coupled with the Android-based Survey Master Software. the T300 Plus GNSS receiver is one of the most reliable choices for your demanding surveying tasks.  Suitable for beginners or professional surveyors.



  • The ComNav T300 Base Set offers full constellation tracking together with 572 channels tracking all working and planned GNSS constellations.
  • Fluent workflow in the field due to two hot-swappable batteries
  • Adjustable TX & RX internal integrated UHF ranges from 410 to 470 MHz with 12.5 kHz channel spacing.
  • East to replace batteries as a result of the consumer-grade design.
  • Smart-charging design as well as the ability to charge through a 12 VDC adaptor or car battery.
  • Collect high accurate data faster in the field due to the up to 30° tilt compensation
  • The Built-in 4G modem ensures the T300 Plus perfectly works with all kinds of CORS worldwide.
  • Simple configuration, operation, and status of the T300 Plus through WiFi as a result of the WebUI function.
  • In addition, you can copy the logged static data from the receiver to your PC with the USB mode.



  • R500 Android-based rugged data collector
  • Android 6.0 Operating System.
  • IP68 Certified.
  • 4.3’’ Sunlight Readable Touch Display.
  • 8 MP Camera with Autofocus.
  • Compact Design with Long Battery Life.
  • Dual SIM and Dual Standby.
  • Integrated 4G, Bluetooth® and WiFi.



  • Survey Master
  • Compatible with most Android devices.
  • Easier survey workflow due to the wizard function.
  • Support maximum 30° tilt compensation.
  • Supports all survey modes, including Static, PPK and RTK.
  • Access to real-time open street maps.
  • Collect users’ feedback through Cloud Service.



  • SINOGNSS Compass Solution Software
  • Provides the complete GPS/GLONASS/BeiDou/GALILEO processing solution.
  • Supports GNSS observation data in RINEX as well as 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.

Additional information

Signal Tracking



Satellite Signals

-GPS: L1, L2, L2C, L5
-BeiDou: B1, B2, B3
-BeiDou Global Signal: B1C, B2a1
-Galileo: E1, E5a, E5b
-QZSS (Reserved)

Performance Specifications

Warm start

<30 s

Hot start

<15 s

Initialization time

<10 s

Signal re-acquisition

<1.5 s

Initialization reliability


Positioning Specifications

Post Processing (static and fast static)

-Horizontal: 2.5 mm + 0.5 ppm
-Vertical: 5 mm + 0.5 ppm

Long Observations static

-Horizontal: 3 mm + 0.1 ppm
-Vertical: 3.5 mm + 0.4 ppm

Real Time Kinematic

-Horizontal: 8 mm + 1 ppm
-Vertical: 15 mm + 1 ppm


<0.4m RMS


1 m 3D RMS


1.5 m 3D RMS


Serial port (7 pin Lemo)

-Combined Serial and USB function
-Baud rates up to 921600bps for serial

UHF Modem

-Tx/Rx with a full frequency range from 410-470 MHz4
-Transmit power: 0.5-2 W adjustable
-Range: 1-5 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

Power, Satellite Tracking, GPRS Status and Differential Data


V4.0 protocol, compatible with Windows OS and Android OS

Tilt Sensor

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 15.8 cm × 7.5 cm


0.95 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

5-27 VDC

Power consumption

3.1 W

Li-ion battery capacity

2 × 2000 mAh, up to 9 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)

Product Features

Scope of Delivery

  • 2x Receivers heads (base and rover)
  • 4x internal Batteries
  • 2x battery chargers
  • 2x Antenna for the receivers
  • 1x R550 controller
  • 1x Tribacht
  • 1x Basse 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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