> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # SparkFun RTK Surveyor **Type:** Product page · **SKU:** SPX-17369 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia) **Page:** https://core-electronics.com.au/sparkfun-rtk-surveyor.html ([markdown](https://core-electronics.com.au/sparkfun-rtk-surveyor.html.md)) ## Retired product This product is retired and no longer available for purchase. Replaced by: GPS-18443. **Replacement:** https://core-electronics.com.au/catalog/product/view/sku/GPS-18443 ## How to buy - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description Note that this RTK board by default only uses a Bluetooth connection, in order to enable data output over serial close the appropriate switches, and to enable both outputs simultaneously, you will need to close a solder bridge on the back. The SparkFun RTK Surveyor is an easy to use GNSS receiver for centimeter-level positioning. Perfect for surveying, this preprogrammed device can also be used for autonomous driving, navigation, asset tracking and any other application where there is a clear view of the sky. The RTK Surveyor can also be used as a base station. With the flick of a switch, two RTK Surveyors can be used to create an RTK system capable of 14mm horizontal positional accuracy. The built-in Bluetooth connection via an ESP32 WROOM enables the user to use the RTK Surveyor with their choice of GIS application on a phone or tablet. The built-in battery allows field use for up to four hours and is compatible with common USB battery banks. This device can be used in three modes: - GNSS Positioning (~30cm accuracy) - GNSS Positioning with RTK (1.4cm accuracy) - GNSS Base Station In **Position** mode the device receives L1/L2 signals from a user-provided antenna and the high-grade GNSS receiver provides lat/long and altitude with accuracies around 300mm. In **Positioning with RTK** mode the device receives L1/L2 signals from the antenna and correction data from a base station. The correction data can be obtained from a cellular link to online correction sources or over a radio link to a 2nd RTK Surveyor setup as a base station. In **Base Station** mode the device is mounted to a fixed position (like a tripod or roof) and begins transmitting correction data over a radio or internet connection. A base is often used in conjunction with a second unit set to 'Positioning with RTK' to obtain the 14mm accuracy. Two cables are provided with the RTK Surveyor allowing a user to plug on our easy to use [Serial Telemetry Radios](https://core-electronics.com.au/search/?q=17255) or their own radio link. If a local correction source is within 10km, a user can also use their phone to provide correction data over the Bluetooth link (no external radio needed!). We are undergoing FCC/CE EMI and safety testing for the RTK Surveyor. Once complete the RTK Surveyor will become a mainstream SparkFun product. For now, this is fully capable, fully programmed, but consider it a device in development. **Note:** The SparkFun RTK Surveyor is just the enclosed device and does NOT include an antenna, serial telemetry radio, or associated mounting pieces. These items will need to be purchased separately from the Hookup Accessories below. [Get Started With the SparkFun RTK Surveyor Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-rtk-surveyor-hookup-guide/all) **Experimental Product:** [SparkX](https://www.sparkfun.com/sparkx) products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our [forum](https://forum.sparkfun.com/) for support or to ask a question. **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 - 4MB 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) - Data Port: 3.3V TTL Serial (115200bps NMEA) - Weight: 132g (entire device including battery) - Dimensions: 118mm x 79mm x 30mm (4.7in x 3.1in x 1.2in) - 1x [Qwiic](https://www.sparkfun.com/qwiic) Connector **Documents** - [Schematic](https://core-electronics.com.au/attachments/localcontent/SparkFun_RTK_Surveyor-v13_264820b5dcf.pdf) - [Eagle files](https://core-electronics.com.au/attachments/localcontent/SparkFun_GPS_RTK_Surveyor-Eagle_Files_2635702ee3f.zip) - [Repo](https://github.com/sparkfun/SparkFun_RTK_Surveyor) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/17369-gps_rtk_surveyor_-_enclosed-01.jpg)