Drotek SIRIUS RTK GNSS Rover (F9P)
Series: Drotek RTK GNSS modules for drones
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The Drotek SIRIUS RTK GNSS Rover (F9P) is an RTK rover with an integrated active antenna for medium-class multicopters. French maker Drotek builds it in France. The receiver is a u-blox ZED-F9P, and an RM3100 is listed as the magnetometer.
The rover uses two bands (L1 and L2) and handles GPS, GLONASS, Galileo, BeiDou and QZSS. Drotek states 1 cm with a base and a convergence time under 10 s. Shop and datasheet differ on the rate: the shop says up to 20 Hz, which holds only with GPS alone; for RTK with four systems the datasheet gives 8 Hz. Connection is through USB, I2C, SPI and UART (JST-GH). The weight is 130 g according to the datasheet from 2020, with the integrated antenna.
The integrated antenna saves the antenna cable but means the whole unit must sit where the antenna needs a clear view, usually on a mast. 130 g on a mast calls for firm fixing, because vibration otherwise disturbs the position solution. The EU classes apply to the aircraft: from C1 upward geo-awareness and remote ID are mandatory, and on an aircraft of class C0 below 250 g, 130 g leaves little reserve.
For procurement, availability needs to be clarified, because on its website Drotek now puts light-show drones in the foreground. The ZED-F9P firmware is developed further by u-blox and should be brought up to date before use. The magnetometer is calibrated after installation, and the mount is checked for play.
Technical data
Other data
| Chipset | u-blox ZED-F9Pcorrect |
|---|---|
| Compass | RM3100correct |
| Constellations | ['GPS', 'GLONASS', 'Galileo', 'BeiDou', 'QZSS']correct |
| Frequency bands | L1/L2correct |
| Horizontal accuracy (cm) | 1correct |
| Interfaces | USB, I2C, SPI, UART (JST-GH)correct |
| RTK capable | yescorrect |
| Update rate (Hz) | 20correct |
| Weight (g) | 130correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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