{"title":"RTK Facet Centimetre-Grade GNSS Surveyor","handle":"sparkfun-rtk-facet","url":"/products/sparkfun-rtk-facet","description":"The RTK Facet is an all-in-one high-precision GNSS surveying device designed to deliver centimetre-grade position measurements with a simplified field workflow. It combines the core electronics, antenna and logging hardware into a compact unit for geolocation, surveying and RTK projects.For everyday use, it pairs with a smartphone over Bluetooth. Your phone can supply correction data from an NTRIP service via the internet while receiving the high-accuracy NMEA position output from the RTK Facet.Inside the unit are an ESP32 WROOM, a u-blox ZED-F9P GNSS module, a LiPo fuel gauge and a microSD card slot for logging. The protective dome houses a surveyor-grade multi-band L1/L2 antenna with a precise Antenna Reference Point (ARP).The RTK Facet is fully open-source hardware and is programmed in Arduino, with access to the electrical and mechanical design files. It can log NMEA, RAWX and SFRBX data directly to microSD for post-processing and research.Specifications:Antenna Phase Center L1: 71.8mmAntenna Phase Center L2: 67.3mmAntenna Phase Center Average: 69.55mmFor a permanent base station, SparkFun recommends using an L1/L2/L5 surveying antenna with a protected reference station or a ZED-F9P breakout-based solution.","vendor":"SparkFun","product_type":"GNSS Surveyor","in_stock":false,"options":[],"variants":[{"id":15795,"title":"Default Title","sku":"SF-GPS-19984","mpn":"GPS-19984","price":1364.4,"on_sale":false,"in_stock":false,"available_quantity":0}]}