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WitMotion WTRTK-982 UM982 RTK GNSS Module, Centimeter-Level Positioning and Orientation for Drones and Surveying

WitMotion WTRTK-982 UM982 RTK GNSS Module, Centimeter-Level Positioning and Orientation for Drones and Surveying

WitMotion

$102.66 USD
$102.66 USD
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Overview

The WitMotion WTRTK-982 RTK GNSS module is a dual-antenna positioning and orientation module based on the UM982 chip. It supports GPS/BDS/GLONASS/Galileo/QZSS full satellite systems, Dual-RTK dual engine technology, and RTCM adaptive recognition for centimeter-level positioning output in compact integrations.

The module includes an anti-interference unit with 60 dB narrowband interference suppression and interference detection, a pi-type 50 ohm antenna matching network with VSWR below 1.78, and TYPE-C plus XH2.54x6PIN dual interface connection. It is designed for navigation and positioning workflows that require reliable RTK performance.

Key Features

  • All-constellation multi-frequency support: GPS/BDS/GLONASS/Galileo/QZSS
  • Dual-antenna input with dual-antenna directional positioning
  • Dual-RTK dual engine technology with differential input RTCM adaptive recognition
  • Built-in anti-interference unit with 60 dB narrowband interference suppression and interference detection
  • Pi-type network impedance matching (50 ohm), VSWR below 1.78
  • 20 Hz dual-antenna data update rate
  • Compact module size for integration: 26.0 x 38 x 7.6 mm

Specifications

Item Value
Model WTRTK-982
Chip UM982
Channels 1408
Antenna mode Dual-antenna directional positioning
Data update rate Dual antenna 20 Hz
Signal reception BDS B1I, B2I, B3I; GPS L1C/A, L2C, L2P(Y), L5; GLONASS G1, G2; Galileo E1, E5a, E5b; QZSS L1C/A, L2C, L5; SBAS L1C/A
Cold-start TTFF ≤30 s
Hot-start TTFF ≤1 s
Single-point positioning accuracy Horizontal 1.5 m, elevation 2.5 m
Differential positioning accuracy Horizontal 0.4 m + 1 ppm, elevation 0.8 m + 1 ppm
RTK positioning accuracy Horizontal 0.8 cm + 1 ppm, elevation 1.5 cm + 1 ppm
Orientation accuracy 0.1 degree/1 m baseline
Temporal precision 20 ns
Speed measurement accuracy 0.03 m/s
Serial port baud rate 4800 bps to 921600 bps
Default serial settings 115200 bps, 8 data bits, no checksums, 1 stop bit
Protocol NMEA0183
Main supply 5 V
Typical power consumption 220 mA @ 5 V
Operating temperature -40 to 85 C
Storage temperature -45 to 125 C
Size 26.0 x 38 x 7.6 mm
Interfaces MMCX, TYPE-C, XH2.54x6PIN
I/O labels EN, GND, TXD, RXD, VCC, PPS

What's Included

  • WTRTK-982 module x1
  • SMA cable x2
  • Heat sink x1
  • Pins x2
  • TYPE-C cable x1

Applications

  • Drones
  • Surveying and mapping
  • Precision agriculture
  • Autonomous machines

Manuals

Available resources include PC Software, Manual, Use Video, and Protocol. For setup help and after-sales support, contact support@rcdrone.top.

Details

WitMotion WTRTK-982 RTK GNSS module comparison chart with UM982 dual-antenna specs

The WTRTK-982 pairs UM982-based dual-antenna positioning with RTK-oriented performance and compact sizing.

RTK positioning principle diagram showing differential corrections for centimeter-level accuracy

RTK correction data helps the receiver turn satellite signals into more accurate positioning results.

WitMotion WTRTK-982 RTK GNSS module overview with UM982, UM980, and UM960 product family graphic

Built for drones, surveying, precision agriculture, and autonomous systems, the WTRTK-982 focuses on dual-antenna RTK navigation.

Centimeter-level RTK positioning map graphic with accuracy radius and location marker

Centimeter-level RTK performance supports tighter tracking when exact position matters.

Multi-system GNSS support graphic for BDS, GPS, GLONASS, Galileo, and QZSS satellites

Full-constellation support broadens satellite availability in open-sky and mixed-environment use.

Satellite tracking performance chart for BDS, GPS, GLONASS, and Galileo signal response

Stable satellite tracking helps the module maintain reliable output across multiple GNSS bands.

Fast satellite search performance graphic highlighting 10-second convergence and 20 Hz RTK refresh

Quick RTK convergence and a 20 Hz refresh rate support responsive positioning updates.

Map tracking software interface showing constellation view, live map, and tracking status panels

PC software can display live map data, positioning status, and satellite tracking in one view.

WitMotion WTRTK-982 anti-interference performance graphic with satellite dish background

The built-in anti-jamming design is intended to keep positioning reliable in noisy electromagnetic environments.

Product detail close-ups showing MMCX, TYPE-C, serial header, and onboard components

Visible connection points include MMCX and TYPE-C interfaces for easier integration and setup.

Antenna impedance performance diagram with network analyzer and VSWR measurement screens

Impedance matching and VSWR testing support stronger antenna performance and signal handling.

WTRTK-982 module wiring instructions with board dimensions and pin layout

The compact board layout and labeled pins make integration easier for custom builds.

WTRTK-982 application examples for drones, surveying, autonomous machines, and precision agriculture

The module is positioned for drone control, surveying, autonomous vehicles, and precision farming.

Development kit resources for the WTRTK-982 including PC software, manual, video, and protocol files

Setup resources are included to help with testing, configuration, and integration.

WTRTK-982 accessory list with CNC housing, silicone case, heat sink, feeder cable, and pin header

The package includes the main module and practical accessories for installation and protection.

Shipping list showing WTRTK-982 module variants with included accessories

Included accessories vary by package, but each set centers on the same WTRTK RTK module platform.

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