SparkFun RTK Express Plus Surveying Kit
£695.00 (ex VAT £579.17)
The SparkFun RTK Surveying Kit has everything you need to get centimetre level global positioning measurements using GNSS RTK. We’ve created a handy carrying case to protect the most expensive bits, allowing you to quickly attach the L1/L2 antenna and RTK Surveyor housing to the pole or tripod of your choice. The kit includes all the antenna bits, cables and chargers you need to jump right into the field.
Only 1 left in stock
The RTK Surveyor is a Bluetooth® enabled multi-band GNSS receiver based on the ESP32 from Espressif and the ZED-F9P from u-blox. Flip the switch and you’ll have 300mm approximate accuracy out of the box and 18mm accuracy with RTCM corrections. This kit provides the L1/L2 antenna, adapters, interface cables, and chargers needed for general GNSS use.
We generally recommend using your cellular phone as the radio backhaul for RTCM but you can also use your own, higher power radios as long as they support 57600bps. We also recommend logging all data to your phone over Bluetooth. This is as simple as checking a box within SW Maps. But if you prefer to do long surveys, or need to deal with RAWX measurements where a phone will not be present, a microSD card should be purchased (any size up to 32GB).
Please keep in mind that you will need to provide your own mono-pod or tripod as well as a cell-phone type holder for securing the RTK Surveyor to your mono-pod or tripod.
Note: The L1/L2 antenna has a 5/8″ thread which will fit most surveying platforms. The kit includes a 5/8″ to 1/4″ adapter as well which will fit most camera mono-pods and tripods. You may need additional adapters for your specific equipment.
Sparkfun RTK Comparison
RTK Surveyor
A versatile enclosed device that can be used either for centimeter accuracy positioning or as a base station.
| Rover | Base | IMU | Display | Receiver | Antenna | Battery | Application |
|---|---|---|---|---|---|---|---|
| Yes | Yes | No | No | u-blox ZED-F9P |
External | 1000mAh | Surveying or Base |
RTK Express
We’ve taken everything that is good about the RTK Surveyor and upgraded with a display, a better battery and an accelerometer for digital leveling.
| Rover | Base | IMU | Display | Receiver | Antenna | Battery | Application |
|---|---|---|---|---|---|---|---|
| Yes | Yes | No | Yes | u-blox ZED-F9P |
External | 1300mAh | Surveying or Base |
RTK Express Plus
RTK Express Plus adds an internal IMU to combine real-time GNSS tracking with advanced sensor fusion. The result is accurate positioning even when GNSS is lost in tunnels, parking garages, etc.
| Rover | Base | IMU | Display | Receiver | Antenna | Battery | Application |
|---|---|---|---|---|---|---|---|
| Yes | No | Yes | Yes | u-blox ZED-F9P |
External | 1300mAh | Surveying |
Features
GNSS Receiver: ZED-F9P
- Concurrent reception of GPS, GLONASS, Galileo and BeiDou
- Receives both L1C/A and L2C bands
- Current: 68mA – 130mA (varies with constellations and tracking state)
- Time to First Fix: 25s (cold), 2s (hot)
- Max Navigation Rate:
- PVT (basic location over UBX binary protocol) – 25Hz
- RTK – 20Hz
- Raw – 25Hz
- Horizontal Position Accuracy:
- 2.5m without RTK
- 0.010m with RTK
- Max Altitude: 50km (31 miles)
- Max Velocity: 500m/s (1118mph)
Bluetooth® Transceiver: ESP32 WROOM
- Xtensa® dual-core 32-bit LX6 microprocessor
- Up to 240MHz clock frequency
- 16MB of flash storage
- 520kB internal SRAM
- Integrated 802.11 BGN WiFi transceiver
- Integrated dual-mode Bluetooth® (classic and BLE)
- Hardware accelerated encryption (AES, SHA2, ECC, RSA-4096)
- 2.5 µA deep sleep current
Overall Device
- Internal Battery: LiPo 1000mAh with 500mA charging
- Radio Port: 3.3V TTL Serial (57600bps RTCM TX/RX, configurable)
- Data Port: 3.3V TTL Serial (460800bps NMEA, configurable)
- Toggle switch controls
- Weight: 162g (entire device including battery)
- Dimensions: 132mm x 101mm x 32mm (5.2in x 3.9in x 1.2in)
- 1x Qwiic Connector
- 1x microSD Socket for optional logging
GNSS Multi-Band L1/L2 Surveying Antenna
- Gain: ≥5dBi
- LNA Gain: 40dB
- Reception Frequencies
- L1: 1555 to 1615MHz
- L2: 1198 to 1278MHz
- 50 Ohm Antenna Impedance
- Overall antenna weight: 335g
- Bare antenna element weight (including MMCX connector, with RF shield): 160g
- Dimensions: 148 x 55mm
- Waterproof IP67
- Connector: Female TNC
Included
- SparkFun RTK Surveyor
RTK Kit Carrying Case
GNSS L1/L2 Multi-Band Antenna – TOP106
Antenna Interface Cable – SMA to TNC (300mm)
1/4″ to 5/8″ Antenna Thread Adapter
USB Wall Charger – 5V, 2A (USA PLUG)
USB A to C Cable – 0.8m
Data Cable
Radio Cable - RTK Kit Carrying Case
- GNSS L1/L2 Multi-Band Antenna – TOP106
- Antenna Interface Cable – SMA to TNC (300mm)
- 1/4″ to 5/8″ Antenna Thread Adapter
- USB Wall Charger – 5V, 2A
- USB A to C Cable – 0.8m
- Data Cable
- Radio Cable
Not Included/Optional:
- Camera Mono-pole or Tri-pod
- Phone/Enclosure Holder
- Telemetry Radios – 500mW
- microSD Card – 16GB
Resources
| Weight | 40 g |
|---|---|
| Dimensions | 10 × 10 × 2 cm |
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Delivery Information
- Free UK Delivery for orders over £100 The free shipping method uses Royal Mail’s RM48 service, batteries are excluded.
- Same Day Dispatch For orders placed before 3PM (UK Time) Mon-Fri Excluding Bank Holidays
- Need something Urgently? Select RM special delivery during checkout to have your order delivered next working day guaranteed (assuming you order before 15:00 when we are open)
Returns Information
- 30 Day Return Period If you change your mind you have up to 30 days to return something. Must be returned in as new condition
- 180 Day Warranty For items with a manufacturer defect or an issue resulting from damage during delivery to you. Consumable items such as batteries are excluded.
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