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DroneCAN H-RTK F9P Helical


The DroneCAN H-RTK F9P is the latest differential high-precision GNSS positioning system from Holybro. It has adopted the DroneCAN protocol for communication. It provides multi-band RTK with fast convergence times and reliable performance, concurrent reception of GPS, GLONASS, Galileo and BeiDou, and a fast update rate for highly dynamic and high volume applications with centimeter-accuracy. 

With the adoption of the DroneCAN Protocol, it has up to an 8 Hz navigation update rate, upgradeability, noise immunity, real-time features, and is more robust than UART due to its increased resistance to electromagnetic interference. It does not occupy any serial port of the flight controller, and multiple CAN devices can be connected to the same CAN bus via a hub.

The DroneCAN-F9P uses a u-blox F9P module, a BMM150 compass, and a tri-colored LED indicator, and is equipped with the STM32G4 processor running at 170 MHz with 512 KByte Flash and 96KByte RAM. It supports DroneCAN firmware upgrade via the DroneCAN GUI Tool. It is compatible with the open source Pixhawk series flight controller.


We have designed two models of DroneCAN H-RTK F9P for you to choose, each with different size and antenna design to meet different customer needs. 

DroneCAN F9P Rover
The Rover model has a flatter profile and stronger water resistance. It uses a dual band patch antenna and comes with an integrated cable to connect to the CAN bus. It excels in spaces where there are few obstructions.

You can find purchase link for this product here
DroneCAN F9P Helical
This model uses a helical antenna, which has slightly better performance in space with obstructions than the Rover version. The antenna of this module can either be attached to the module directly or connected via a SMA cable, giving you the ultimate flexibility. It also has a UART2 port exposed, allowing you to do YAW/Heading (aka moving baseline).

You can find the purchase link of this product here

This model can be used either on the rover (aircraft) or as a base station. However, when used as Base Station, RTK communicate with the Ground Control Station via USB, so the DroneCAN protocol is not used. You can consider using the standard H-RTK F9P Helical or Base for your Base Station. 

 Specification & comparison

DroneCAN H-RTK F9P Rover
DroneCAN H-RTK F9P Helical

Intended Application
Rover (aircraft) only
Rover (aircraft) or Base station
GNSS Receiver
U-blox ZED-F9P high precision GNSS module
U-blox ZED-F9P high precision GNSS module
Ceramic Patch Antenna with 20dB LNA
Helical Antenna with 36dB LNA
BeiDou, Galileo, GLONASS, GPS / QZSS
BeiDou, Galileo, GLONASS, GPS / QZSS
B1I, B2I, E1B/C, E5b, L1C/A, L1OF, L2C, L2OF
B1I, B2I, E1B/C, E5b, L1C/A, L1OF, L2C, L2OF
Positioning accuracy
3D FIX: 1.5 m / RTK: 0.01 m
3D FIX: 1.5 m / RTK: 0.01 m
Communication Protocol
DroneCAN 1Mbit/s
DroneCAN 1Mbit/s
Antennas Peak Gain (MAX)
L1: 4.0dBi
L2:1.0 dBi
L1: 2dBi
L2: 2dBi
Time-TO-First Fix
Cold start: ≤29s
Hot start: ≤1s
Cold start: ≤25s Hot start: ≤1s
Navigation Update Rate
RAW: 20Hz Max RTK: 8Hz Max
RAW: 20Hz Max RTK: 8Hz Max
Moving Base RTK: 5Hz Max
Cable Length
27cm or 50cm
Antenna Connection Type
Board: SMA female Antenna: SMA male
Working voltage:
Current Consumption
Diameter: 80mm Height: 20mm
Board: 51.1*35*22.9mm Antenna Diameter: 27.5mm Antenna height: 59mm
Operating Temperature
-20℃ to 85℃
-20℃ to 85℃

Sample Wiring Diagram

For other technical details and user guide, please see the documentation Page here.

Package Included:

  • 1x DroneCAN F9P Helical
  • 1x High Precision GNSS Antenna
  • 1x GH 4P cable 400mm
  • 1x GH 4P cable 150mm
  • 1x GH 6P cable 150mm
  • 1x SH 8P cable 150mm
  • 1x USB (type-c) cable

Spare Parts

DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro DroneCAN H-RTK F9P Helical-Viewpro

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