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C-RTK 2 High-Precision RTK/PPK GNSS Module

  • High-Precision RTK & PPK Positioning – Supports both real-time kinematic (RTK) positioning and post-processed kinematic (PPK) workflows for professional UAV surveying and mapping applications.
  • Centimeter-Level RTK Accuracy – Delivers positioning accuracy of approximately 0.01 m + 1 ppm horizontal and 0.02 m + 1 ppm vertical under supported RTK conditions.
  • Multi-Constellation, Multi-Frequency GNSS – Supports GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS systems for reliable satellite positioning.
  • High-Performance ZED-F9P Receiver – Uses a 184-channel GNSS receiver for advanced multi-frequency positioning performance.
  • Fast RTK Convergence – Supports RTK convergence in under 10 seconds under specified conditions, with navigation updates of up to 20 Hz.
  • Integrated H7 Processing – Features an STM32H743 processor with 2MB Flash and 1MB RAM for onboard processing and positioning-related functions.
  • Industrial-Grade Sensors – Integrates an ICM20689 accelerometer/gyroscope, RM3100 magnetometer, and ICP10111 barometer for additional onboard sensing.
  • Designed for UAV Surveying & Mapping – Supports hot-shoe and shutter-trigger functions for compatible aerial mapping cameras and survey workflows.
  • DroneCAN & PX4/ArduPilot Compatibility – Supports DroneCAN/UAVCAN communication and integration with compatible flight controllers running PX4 or ArduPilot firmware.
  • Compact & Lightweight Design – Measures approximately 56 × 33 × 16.5 mm, weighs around 39 g, operates from 4.5–6V, and supports operating temperatures from -20°C to +85°C.
  • Trusted dealerDirect manufacturer partnership
  • Pan-India deliveryInsured shipping, all states
  • Post-sale supportTraining + service included
Overview

What makes it work

C-RTK 2 GNSS Module | CUAV High-Precision RTK/PPK for PX4/ArduPilot


🎯

0.01m+1ppm
RTK Horizontal Accuracy
🛰️

ZED-F9P
184-Channel Receiver
⏱️

<10 sec
RTK Convergence
📡

RTK + PPK
Positioning Modes
🧠

STM32H743
Processor @ 480MHz
⚖️

39g
Weight
🌡️

-20°C to 85°C
Operating Range

PX4 + ArduPilot
Firmware Support

Full Specifications

Positioning & Sensor Specifications
Specification Details
Product C-RTK 2 GNSS Module — genuine CUAV hardware, clearly labeled “C-RTK 2” on the module itself
GNSS Receiver u-blox ZED-F9P, 184-channel, multi-constellation: GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS
RTK Accuracy Approximately 0.01m + 1ppm horizontal, 0.02m + 1ppm vertical (CEP)
GPS-Only Accuracy Approximately 1.5m horizontal without RTK correction
RTK Convergence Under 10 seconds under specified conditions
Navigation Update Rate Up to 20Hz for RTK, up to 25Hz for raw data (5Hz default)
PPK Support Full post-processed kinematic workflow, with raw-data logging to onboard TF card storage (up to 32GB)
Processor STM32H743, 32-bit Arm Cortex-M7 @ up to 480MHz, 2MB flash, 1MB RAM
Onboard Sensors ICM-20689 accelerometer/gyroscope, RM3100 magnetometer, ICP10111 barometer
xBoom SKU xboom-145489
Connectivity, Power & Build
Specification Details
Flight Controller Link DroneCAN/UAVCAN (recommended) or UART; plug-and-play with CUAV’s X7-series autopilots
Firmware Compatibility PX4 and ArduPilot — one clarification: over DroneCAN, PX4 cannot read heading data from this module directly, so a UART2 connection is needed if heading output is required on PX4
Camera Interfaces 1 hot-shoe input, 1 shutter-trigger in, 1 shutter-trigger out, for compatible mapping cameras
Other Ports 1 USB Type-C, 1 F9P USB, 1 F9P UART, 1 MMCX antenna connector
Power Input 4.5-6V
Dimensions Approximately 56 × 33 × 16.5mm
Weight Approximately 39g
Operating Temperature -20°C to 85°C

Centimeter-Level Positioning for Serious Survey Work

C-RTK 2 GNSS Module: Genuine CUAV Hardware for RTK & PPK Surveying

This is a genuine CUAV module, clearly labeled “C-RTK 2” on the housing. At its core is a 184-channel u-blox ZED-F9P receiver delivering roughly 0.01m + 1ppm horizontal RTK accuracy with convergence in under 10 seconds — and unlike CUAV’s C-RTK 9Ps built earlier this session, this module also fully supports PPK (post-processed kinematic) workflows, logging raw GNSS data to onboard TF card storage for later correction. CUAV has stated this was the first PPK/RTK module in its lineup to add UAVCAN/DroneCAN support, connecting to a compatible flight controller over CAN or UART — and it’s plug-and-play with CUAV’s own X7-series autopilots.

For aerial survey and mapping work specifically, dedicated hot-shoe and shutter-trigger interfaces let it timestamp-tag captured images directly, and CUAV states that using C-RTK 2 for mapping can reduce the number of ground control points needed by more than 80% — commonly just 1-2 control points per square kilometer — with control-point-free mapping achievable when paired with a professional mapping camera. Onboard industrial-grade sensors (ICM-20689 IMU, RM3100 compass, ICP10111 barometer) round out a package built specifically for precision positioning, not just general flight control.

🎯

Centimeter-Level RTK

0.01m + 1ppm horizontal accuracy from a 184-channel receiver.

📡

RTK & PPK Both Supported

Full post-processed kinematic workflow with onboard data logging.

📷

Mapping-Camera Ready

Hot-shoe and shutter-trigger interfaces for survey workflows.

PX4 & ArduPilot Compatible

DroneCAN/UAVCAN or UART connection to your flight controller.

Built for Precision Survey & Mapping

The C-RTK 2 GNSS Module brings genuine centimeter-level positioning to your survey and mapping builds.

Positioning
🎯

184-Channel ZED-F9P

Multi-constellation GNSS for centimeter-level RTK accuracy.

Workflow
📡

RTK & PPK Supported

Real-time correction or post-processed kinematic, your choice.

Mapping
📷

Hot-Shoe & Shutter Trigger

Direct integration with compatible aerial mapping cameras.

Connectivity
🔗

DroneCAN/UAVCAN Ready

One of the first PPK/RTK modules with CAN bus support.

Sensing
🧭

Industrial IMU & Compass

ICM-20689, RM3100, and ICP10111 for rich onboard POS data.

Software

PX4 & ArduPilot Ready

Plug-and-play with CUAV’s X7-series autopilots.

Built for Professional Survey & Mapping UAVs

The C-RTK 2 GNSS Module suits builders who need genuine centimeter-level positioning for serious survey work.

🗺️

Aerial Survey & Mapping

Reduce ground control points with centimeter-accurate tagging.

📐

Photogrammetry Projects

PPK logging pairs well with dedicated mapping cameras.

🚁

Multirotor & Fixed-Wing Survey

DroneCAN or UART integration into most PX4/ArduPilot builds.

🏗️

Construction & Land Survey

Precision positioning for site progress and terrain mapping.

🌾

Precision Agriculture Mapping

Accurate field boundary and terrain data for ag applications.

🔬

UAV Research & Development

Well-documented, open-source-compatible positioning hardware.

See the C-RTK 2 in Use

A real unboxing, CUAV’s own official product walkthrough, and an unboxing of the closely-related C-RTK 2HP variant in the same family.

CUAV official product walkthrough of the C-RTK 2 PPK module

Official CUAV Walkthrough

CUAV’s own channel introduces this exact module

CUAV C-RTK 2HP related RTK module unboxing

Related: C-RTK 2HP Unboxing

The heading-precision variant in the same C-RTK 2 family

Frequently Asked Questions

Does the C-RTK 2 GNSS Module support PPK, not just RTK?
Yes — unlike some other CUAV RTK modules, this one fully supports post-processed kinematic (PPK) workflows, logging raw GNSS data to onboard TF card storage for later correction when a live RTK link isn’t available.
Is this compatible with PX4 and ArduPilot?
Yes, both are supported via DroneCAN/UAVCAN or UART. One technical note: over DroneCAN, PX4 can’t read this module’s heading data directly — connecting via UART2 is needed if you require heading output on PX4.
How much can this reduce ground control points for mapping?
CUAV states its use can reduce the number of ground control points needed by more than 80%, typically down to 1-2 points per square kilometer, with control-point-free mapping possible alongside a professional mapping camera.
What GNSS constellations does it support?
GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS, via a 184-channel u-blox ZED-F9P receiver.
How fast does it achieve an RTK fix?
Under 10 seconds for RTK convergence under specified conditions, with navigation updates up to 20Hz.
What’s the operating voltage and temperature range?
4.5-6V power input, with an operating temperature range of -20°C to 85°C.

Specifications

The full sheet

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