{"product_id":"elt0284","title":"UM981S RTK all-bands GNSS rover","description":"\u003ch5\u003e\u003cstrong\u003eRTK all-band GNSS Rover Kit on UM981S High Precision GNSS receiver with centimeter accuracy. Integrated Helix Antenna, USB-C connector and 1\/4\" thread mount, IP67 waterproof case. Wireless connectivity options Bluetooth or Wi-Fi. All-band receiver delivers centimeter-level accuracy in seconds. Designed for surveying, mapping and navigation.\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cp\u003eWith the RTK GNSS Development Kit you will have everything you need to start your surveying, mapping and navigation tasks with RTK and centimeter level accuracy. You can use your preferred Android application to connect with the kit over Bluetooth or use \u003ca style=\"color: #2445a2;\" href=\"\/blogs\/gnss-receivers\/unicore-uprecise-application\"\u003eUPrecise Unicore Evaluation Software\u003c\/a\u003e to connect directly to UM981S high precision GNSS module over USB-C.\u003c\/p\u003e\n\u003cp\u003eDevelopment Kit ensures the security of positioning and navigation information by using secure interfaces and advanced jamming and spoofing detection technologies. It comes with built-in support for standard RTCM corrections, supporting centimeter-level navigation from local base stations or from virtual reference stations (VRS) in a Network RTK setup.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eThe GNSS DK2 is a compact, versatile, and highly capable GNSS development kit built around a high-precision multi-band receiver delivering centimeter-level RTK accuracy. It is the successor to the original GNSS DK, designed from the ground up on a new hardware and software platform that significantly expands the range of possible applications.\u003c\/p\u003e\n\u003cp\u003eThe device is equally at home in professional surveying and mapping workflows and in custom GNSS-based projects that require flexible connectivity, configurable data routing, and multiple logging formats — all in a single, pocketable unit.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eRugged, Field-Ready Hardware\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe GNSS DK2 is housed in a compact IP67-rated waterproof enclosure with an integrated helix antenna and a standard 1\/4\"-20 threaded mount, making it immediately compatible with photography tripods. A geodetic 5\/8\"-11 adapter is included for use with surveying tripods.\u003c\/p\u003e\n\u003cp\u003eTwo USB Type-C connectors are provided: one for data communication and one for power. Both can supply power to the device, and when a power bank is connected to the power port, the data port can simultaneously charge a connected smartphone. An optional \u003cstrong\u003eVC-1 Powerbank Hand Grip\u003c\/strong\u003e accessory is available for extended field sessions without carrying a separate power bank.\u003c\/p\u003e\n\u003cp\u003eAn internal supercapacitor provides a brief energy reserve on power loss, allowing the firmware to safely close all open files — including GPX tracks — before shutting down, and enabling hot-swap of external power banks without interrupting operation.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eRich Wireless and Wired Connectivity\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe GNSS DK2 offers an unusually broad set of interfaces for a device of its size:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUSB \u003c\/strong\u003e— exposes one or two USB-UART virtual serial ports (USB CDC-ACM, no driver installation required on modern operating systems) and provides USB Mass Storage access to internal storage in File Download mode\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBluetooth 4.2 Classic\u003c\/strong\u003e (BR\/EDR, SPP profile) — wireless serial connection to mobile apps and other devices\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWi-Fi\u003c\/strong\u003e 802.11b\/g\/n (2.4 GHz) — both station (STA) and access point (AP) modes, used for NTRIP corrections [1], firmware upgrades, and CLI access\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLoRa \u003c\/strong\u003e— a dedicated receiver for differential corrections at distances of up to kilometers in good line-of-sight conditions; compatible with Advanced GNSS RTK CORS Fanless Station base stations [1]\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eSeamless Integration with Mobile Applications\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe GNSS DK2 works out of the box as an RTK rover with popular Android field applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/play.google.com\/store\/apps\/details?id=np.com.softwel.swmaps\" target=\"_blank\"\u003eSW Maps\u003c\/a\u003e\u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.lefebure.ntripclient\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe application connects to the device via Bluetooth or USB, receives NMEA data, obtains RTK corrections over the internet via NTRIP, and relays them back to the receiver — which then computes a centimeter-accurate solution.\u003c\/p\u003e\n\u003cp\u003eThrough Android’s mock location mechanism, the RTK position from GNSS DK2 becomes the system-wide location on the phone, transparently available to any app that uses the standard Android location API — from \u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.google.android.apps.maps\" rel=\"noopener\" target=\"_blank\"\u003eGoogle Maps\u003c\/a\u003e and \u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=net.osmand\" rel=\"noopener\" target=\"_blank\"\u003eOsmAnd\u003c\/a\u003e to specialized GIS and field survey tools. Apps that support both NTRIP and mock location — such as \u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=np.com.softwel.swmaps\" rel=\"noopener\" target=\"_blank\"\u003eSW Maps\u003c\/a\u003e, \u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.lefebure.ntripclient\" rel=\"noopener\" target=\"_blank\"\u003eLefebure NTRIP Client\u003c\/a\u003e, and \u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.gnssmaster\" rel=\"noopener\" target=\"_blank\"\u003eGNSS Master\u003c\/a\u003e — can serve as the mock location provider while simultaneously feeding RTK corrections to the device.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eFlexible Data Logging\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eThe 32 GB internal flash storage holds all logged data and configuration files. The device can simultaneously record multiple data streams in different formats:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRaw binary\u003c\/strong\u003e — unprocessed receiver output for post-processing workflows\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNMEA \u003c\/strong\u003e— standard sentence log, compatible with virtually any GIS software\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGPX \u003c\/strong\u003e— track file with automatic date\/time-based naming; waypoints can be marked at any time with a single button press\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eSimple Yet Powerful Configuration\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eAll device settings are controlled through a plain-text file, \u003cstrong\u003eautoexec.txt\u003c\/strong\u003e, stored on the internal drive and executed at every startup. USB port presentation, Bluetooth channel assignments, LoRa parameters, active file writers, baud rates — all are specified in human-readable commands. A well-commented default configuration is automatically generated on first boot and serves as a ready-made starting point.\u003c\/p\u003e\n\u003cp\u003eWi-Fi credentials are stored in protected internal storage rather than in the configuration file.\u003c\/p\u003e\n\u003cp\u003eFor advanced GNSS receiver configuration — message outputs, constellations, RTK parameters — the device exposes the receiver directly over USB, allowing the use of the receiver manufacturer’s official configuration software without any intermediary.\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eReliable Firmware Upgrades\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003eFirmware can be updated over Wi-Fi (OTA), from a file placed on internal storage, or via a utility over USB. The upgrade mechanism is designed to be safe: a hardware unit cannot be permanently bricked by a failed update. If an upgrade fails, the device recovers and the process can be retried.\u003cspan style=\"color: #2445a2;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical: \u003cbr\u003e- Dimensions without Power Bank Ø50х91 mm\u003cbr\u003e- Dimensions with Power Bank Ø50х187 mm\u003cbr\u003e- Weight without Power Bank 114 g\u003cbr\u003e- Weight with Power Bank (including cable) 388 g\u003c\/li\u003e\n\u003cli\u003eAntenna:\u003cbr\u003e- Phase Center Height without Power Bank 74.8 mm\u003cbr\u003e- Phase Center Height with Power Bank 170.8 mm\u003cbr\u003e- Phase Center Height with Pole 2074.8mm\u003cbr\u003e- Phase Center Height with Pole \u0026amp; Power Bank 2170.8 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTilt Measurement: 10 mm + 0.7 mm\/° tilt (accuracy \u0026lt; 2.5 cm within 30°)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eOperating temperature -20 to 50 \u003cspan\u003e°C\u003c\/span\u003e;\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIngress protection: \u003cbr\u003e- without powerbank IP65; \u003cbr\u003e- powerbank IP44;\u003c\/li\u003e\n\u003cli\u003eElectrical: \u003cbr\u003e- powered over USB C; \u003cbr\u003e- Certification CE;\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnectivity: Bluetooth 4.2 BR\/EDR; Bluetooth LE 4.2 (BLE), Wi-Fi 802.11\/b\/g\/n; Port USB-C; LoRa\u003c\/li\u003e\n\u003cli\u003eData: Corrections RTCM3\u003c\/li\u003e\n\u003cli\u003ePosition output NMEA\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch6\u003e\u003cstrong\u003ePackage contents:\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eUM981S RTk all-bands rover\u003c\/li\u003e\n\u003cli\u003eHelix SMA antenna (integrated)\u003c\/li\u003e\n\u003cli\u003e7800 mAh power bank (optional)\u003c\/li\u003e\n\u003cli\u003ePortable Sectional Centering Pole, 200.0 cm (optional)\u003c\/li\u003e\n\u003cli\u003e1\/4\" to 5\/8\" thread converter\u003c\/li\u003e\n\u003cli\u003eUSB A to USB C cable\u003c\/li\u003e\n\u003cli\u003eStorage Bag \u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGNSS DK can be used in Rover operation mode. For complimentary Base station check our \u003ca href=\"https:\/\/gnss.store\/products\/elt0231\"\u003eELT0231\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"ELTEHS","offers":[{"title":"Pole \/ 7800 mAh","offer_id":59171819553100,"sku":"ELT0284-981S-P-7800","price":609.99,"currency_code":"EUR","in_stock":true},{"title":"Pole \/ No Power Bank","offer_id":59171819520332,"sku":"ELT0284-981S-P","price":579.99,"currency_code":"EUR","in_stock":true},{"title":"No Pole \/ 7800 mAh","offer_id":59171819487564,"sku":"ELT0284-981S-7800","price":514.99,"currency_code":"EUR","in_stock":true},{"title":"No Pole \/ No Power Bank","offer_id":59171819454796,"sku":"ELT0284-981S","price":484.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/6262\/0236\/files\/um981-rtk-all-bands-gnss-rover-5043906.jpg?v=1782567558","url":"https:\/\/gnss.store\/products\/elt0284","provider":"GNSS Store","version":"1.0","type":"link"}