{"title":"SparkFun RTK Reference Station","handle":"sparkfun-rtk-reference-station","url":"/products/sparkfun-rtk-reference-station","description":"The SparkFun RTK Reference Station is a high-precision GNSS base station designed for surveying, geolocation, and time reference applications. Set up a fixed-location NTRIP server to provide RTK corrections to rovers, or use it as an NTP server for network time synchronisation — all with just a few minutes of configuration.\n\nRTK (Real Time Kinematics) combines standard GNSS signals with real-time correction data (RTCM) to achieve 1.4 cm positional accuracy, compared to ~30 cm from GNSS alone. The Reference Station generates correction data locally and shares it via Ethernet, keeping baseline distances short for optimal rover accuracy.\n\nKey Features\n\n\nu-blox ZED-F9P GNSS Module – Multi-band receiver supporting GPS, GLONASS, Galileo, BeiDou, SBAS, and QZSS, connected via high-speed SPI\n\nESP32-WROOM Processor – Wi-Fi and Bluetooth connectivity with RP-SMA antenna connector\n\n10/100 Mbps Ethernet – WIZnet W5500 interface with auto-negotiate and Power-over-Ethernet (36–57 V) support\n\nHigh-Speed Data Logging – microSD via 4-bit SDIO interface; log RAWX and SFRBX from all constellations at up to 20 Hz\n\nOLED Display – On-device status display with antenna fault indicators\n\nSMA Time Pulse Output – 3.3 V default (configurable for 5 V), up to 100 kHz output (1 Hz in NTP mode)\n\nGNSS Antenna Port – SMA connector with 5 V active antenna power, short-circuit and open-circuit detection\n\nATECC608A Crypto Co-Processor – Available for custom firmware applications\n\nAluminium Enclosure – Custom extruded case with machined end panels, IP42 rated, with slotted flanges for rack or enclosure mounting\n\n\nOperating Modes\n\n\nNTRIP Base Station – Send RTCM corrections to a caster over Ethernet\n\nNTP Time Server – Provide high-accuracy timing data to network devices via Ethernet\n\nGNSS Rover – Standard positioning (~30 cm) or RTK-corrected positioning (1.4 cm) via NTRIP over Ethernet or Bluetooth\n\nTCP Client – Stream NMEA/UBX navigation data to a remote server over Ethernet\n\n\nPower Options\n\nESP32 USB-C connector\nu-blox GNSS USB-C connector\nRear USB-C power connector\nPower-over-Ethernet (36–57 V)\n5 V I/O screw terminal (5.5 V maximum)\n\n\nIdeal For\n\nSurveying and high-precision geolocation\nSetting up local NTRIP correction servers\nNetwork time synchronisation (NTP)\nGNSS data logging and research\n\n\nPackage Contents\n\n1× Cased Reference Station\n1× L1/L2/L5 GNSS Surveying Antenna\n1× Reinforced RG58 TNC-SMA Cable (10 m)\n1× SMA Wi-Fi / Bluetooth Antenna\n1× 32 GB microSD Card (Class 10)\n1× USB-C Power Supply (5 V 1 A)\n1× USB-C Cable (A to C, 2 m)\n1× Ethernet Cable (CAT-6, 1 m)\n\n\n\nNote: The aluminium enclosure is rated IP42. A weatherproof enclosure is required for outdoor installation.\n\n\nResources\n\nRTK Product Manual\nHookup Guide\nRTK Firmware Source (GitHub)\nRTK Firmware Binaries (GitHub)\nHardware Design Files (GitHub)\nSchematic (PDF)\n","vendor":"SparkFun","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":1544,"title":"Default Title","sku":"SF-GPS-22429","price":1756.15,"compare_at_price":0.0,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}