SKU: 71399978609

T-RTK-UM982 Modular Centimeter-Level Satellite Positioning Module

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Description

T-RTK-UM982 Modular Centimeter-Level Satellite Positioning ModuleProduct Introduction T RTK UM982: Cost Effective Centimeter Level Positioning Solution. This module features a modular, stackable design that integrates mobile station, base station, 4G, and radio functionalities. It includes a built in magnetic compass, Wi Fi hotspot, and supports single dual antenna configurations for applications like drones, unmanned vehicles, and surveyingPowered by the UM982 all system, all frequency chip, it achieves a cold

Product Introduction

T-RTK UM982: Cost-Effective Centimeter-Level Positioning Solution.

This module features a modular, stackable design that integrates mobile station, base station, 4G, and radio functionalities. It includes a built-in magnetic compass, Wi-Fi hotspot, and supports single/dual antenna configurations for applications like drones, unmanned vehicles, and surveyingPowered by the UM982 all-system, all-frequency chip, it achieves a cold start in <30s, hot start in <4s, and provides a 20Hz update rate, supporting BeiDou, GPS, and other global satellite systems.It offers versatile interfaces (USB-C, UART, flight controller port) for direct connection to Pixhawk flight controllers and compatibility with embedded devices. Drivers for ROS, Python, and C++ facilitate access to position, velocity, and heading data.An optional all-in-one base station version provides up to 8 hours of battery life for portable, plug-and-play operation.

Product Features

 

All-Satellite All-Frequency, Worry-Free Signal


Supports global navigation systems such as BDS/GPS, with multi-frequency signal reception, enabling rapid signal acquisition even in complex environments to ensure stable operation.

Centimeter-Level Accuracy, Precision Guaranteed


Utilizes Real-Time Kinematic (RTK) technology to deliver real-time centimeter-level positioning accuracy, meeting stringent requirements for professional applications like surveying and construction layout.

Multi-Platform Compatibility, Broad Applicability


Designed for flexible integration with diverse equipment including drones and unmanned vehicles, adapting to varied high-precision positioning needs across industries.

Multi-Mode Communication, Flexible and Efficient


Supports self-established base stations or connection to CORS networks, with configurable communication modules (e.g., 4G, radio) to ensure robust and adaptable differential data links.

Cumulative sales surpass 10,000 units, shipped to over 50 countries worldwide

 

All-Satellite All-Frequency, Centimeter-Level Accuracy

Powered by the high-performance UM982 chip, it supports all major satellite systems and full-frequency signals, delivering data at a high update rate of 20Hz.Horizontal Accuracy: 0.8 cm + 1 ppm,Vertical Accuracy: 1.5 cm + 1 ppm

Multi-Platform Compatibility

Native support for diverse application scenarios including drones, autonomous vehicles, robots, agricultural machinery, surveying and mapping, and environments with or without CORS services.

Selection Recommendations

 

 

Modular Design

Features a stackable, modular design incorporating mobile units, base station units, 4G communication modules, 5-kilometer radio modules, Wi-Fi hotspots, and other components.

Modular Design

Features a stackable, modular design incorporating mobile units, base station units, 4G communication modules, 5-kilometer radio modules, Wi-Fi hotspots, and other components.

Extensive Interface Configuration

Integrated Type-C (combined power delivery/debugging/communication), dual serial ports (4-pin basic communication + 7-pin flight controller interface), PPS precision timing, and I²C direct connection to magnetic compass.

Multiple Communication Methods

Supports direct connection to CORS via 4G modules, radio ad hoc networking, and Python API integration with CORS, offering flexible adaptation to diverse scenarios.

WiFi Hotspot Networking

The base station incorporates a built-in WiFi hotspot for wireless connectivity, enabling UDP-based sharing of RTCM differential data packets.Multiple Mission Planner or QGC ground stations can be paired with remote controllers to achieve drone swarm positioning.

Flexible single/dual antenna switching

Flexible switching between SMA single-antenna direct plug and MMCX dual-antenna connectors.

Secondary Development

Provides ROS, Python, and C++ drivers for easy access to data such as latitude, longitude, altitude, velocity, and heading, enabling rapid secondary development.

Integrated Base Station

Optional integrated base station combines the base unit, battery, mushroom-head antenna, and tripod into one compact unit. Offers 8 hours of battery life, lightweight and portable, ready to use right out of the box.

Integrated Base Station

Optional integrated base station combines the base unit, battery, mushroom-head antenna, and tripod into one compact unit. Offers 8 hours of battery life, lightweight and portable, ready to use right out of the box.

Interface and Wire Sequence

Fastening method

Technical Parameter

Parameter Model Mobile End Base Station End Integrated Base Station (T-RTK UM982 OneBase)
Positioning Module Model UM982 UM982 UM982
Basic information Channels 1408 channels, based on NebulasIV
Antenna Interface MMCX2, SMA1 SMA*1
Modes BDS B1I, B2I, B3I, B1C, B2b
GPS L1C/A, L2C, L2P(Y), L5
GLONASS G1, G2
Galileo E1, E5a, E5b, E6
QZSS L1C/A, L2C, L5, L6
SBAS L1C/A
Main Antenna Frequencies BDS: B1I, B2I, B3I
GPS: L1C/A, L2P (Y)/L2C, L5
GLONASS: G1, G2
Galileo: E1, E5a, E5b
QZSS: L1, L2, L5
Secondary Antenna Frequencies BDS: B1I, B2I, B3I
GPS: L1C/A, L2C
GLONASS: G1, G2
Galileo: E1, E5b
QZSS: L1, L2
Performance Metrics RTK (RMS) Horizontal: 0.8cm + 1ppm
Vertical: 1.5cm + 1ppm
Single Point (RMS) Horizontal: 1.5m
Vertical: 2.5m
DGPS (RMS) Horizontal: 0.4m + 1ppm
Vertical: 0.8m + 1ppm
PPP (RMS) Horizontal: 5cm
Vertical: 10cm
Heading Accuracy (RMS) 0.1° / 1m baseline
PPS Accuracy (RMS) 20 ns
Velocity Accuracy (RMS) 0.03 m/s
Cold Start Time <30 s
Warm Start Time < 4 s
Initialization Time <5s (typical)
Initialization Reliability > 99.9%
Data Update Rate Default: 2Hz, Max: 20Hz
Positioning/Heading: 20Hz, Raw Measurements: 20Hz
Differential Data Format RTCM 3.X
Data Format NMEA-0183, Unicore
Baud Rate 4800bps~921600bps (Default: 115200bps)
Magnetometer Model IST8310
Measurement Range ±1600 μT (X, Y-axis), ±2500 μT (Z-axis)
Offset Temp. Drift 0.024 μT/°C
Physical Dimensions 39mm×39mm×12.5mm 39mm×39mm×22.1mm 147mm×82mm×36mm
Weight 34g (excl. antenna) 52g (excl. antenna) 386g
Electrical Voltage 5V 5V 5V
Power Consumption 1300mW 2000mW 2888mW
Runtime – – 9h
Environment (RTK Chip) Operating Temperature -40℃ ~ +85℃
Storage Temperature -55℃ ~ +95℃
Humidity 95% non-condensing
Vibration GJB150.16-2009, MIL-STD-810F
Shock GJB150.18-2009, MIL-STD-810F
Communication Interface I2C 1 x I2C (shared with 7Pin UART)
USB 1 x USB
UART 1 x 4Pin UART, 1 x 7Pin UART 1 x 7Pin UART
 
Integrated Base Station Tripod Height Max 1.80m
External Power Port XT30 x 1 (12V)
Antenna Interface SMA only
Voltage Display Supported
4G Module Network Standard 4G All-netcom (supports China Mobile/Unicom/Telecom)
Dimensions 39mm39mm14.5mm (excl. antenna)
Weight 49g (incl. antenna)
Operating Voltage 5V (directly powered by RTK)
Power Consumption <0.3W
Radio Module Networking Mode Peer-to-multipeer, star network
Max Network Nodes Theoretical max: 100
Frequency Band 410~525MHz
Max TX Power 22±0.5dBm@470MHz
Transmission Rate Max: 0.268Kbps
Communication Range Max: 5km (air-to-air)
Dimensions 39mm39mm14.5mm (excl. antenna)
Weight 49g (incl. antenna)
Operating Voltage 5V (directly powered by RTK)
Power Consumption <0.4W
Quadrifilar Helix Antenna Operating Modes GPS L1, L2, L5
BDS B1, B2, B3
GLONASS L1, L2, L3
Galileo E1, E5a, E5b, E6
SBAS L1, L5
QZSS L1, L2, L5, L6
IRNSS L5
Gain 32±2dB
Interface SMA-J
Dimensions Φ27.3 * 58.6mm
Weight 16g
Mushroom Antenna Operating Modes GPS L1, L2, L5
BDS B1I, B2I, B3I, B1C, B2a, B2b
GLONASS L1, L2, L3
Galileo E1, E5a, E5b, E6
SBAS L1, L5
QZSS L1, L2, L5, L6
IRNSS L5, L-Band
Gain 38±2dB
Interface TNC-K
Dimensions Φ154 * 64.2mm
Weight 280g
Quadrifilar Antenna Bracket Dimensions Height ~11.7cm
Weight

16g (incl. feeder cable)

Product size

 

Shipping list

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71399978609

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4.1 ★★★★★
Based on 27 reviews
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Product Reviews
C
Verified Purchase
Camryn
Bozeman, US
★★★★★ 5
Great Chair! Worth the Price!
Color: Sky Blue, Size: Pack of 1
LOVE my new desk chair! I got the Sky Blue which is a really pretty blue in person. I work from home in tech, and had been getting constant headaches no matter what position I was in. I finally decided to invest in a better desk chair, and I'm SO glad I did! It's much more supportive and comfortable. I really like that I can flip the arms up or down, and the height is easy to adjust. Also, because I can flip the arms up, I can keep the chair out of the way when I'm not working by putting it right up against the desk. Very much worth the price! Assembly was simply and quick. Not even 30 minutes. Also, when I had a question about the chair, their support team was quick to respond and very helpful. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
D
Verified Purchase
David Miller
Whiting, US
★★★★★ 5
Great quality chair, regardless of price.
Color: Black+white, Size: Pack of 1, Color: Black+white, Size: Pack of 1
Great quality chair, regardless of the price, period. So well packaged that it took almost as long to unwrap as assemble. Assembly was easy (loved the Allen wrench with sturdy handle). I am 6'2" and the fit and height adjustments work well for my height. Comfort is personal, so I like the semi-firmness of the seat. While the chair is constructed of heavy gauge plastic the base is solid metal with enamel finish: I love the look. The arm rests line up perfectly to my computer keyboard. I expect many, many years of service.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
E
Verified Purchase
EJ
Phoenix, US
★★★★★ 5
Great Value for a Comfortable Home Office Chair
Color: Black, Size: Pack of 1, Color: Black, Size: Pack of 1
I’ve been using this chair for a couple of days now, and honestly, it’s been a solid upgrade from my old one. I work from home most days, so comfort matters a lot—and this chair delivers better than I expected for the price. The first thing I noticed was the lumbar support. It’s actually adjustable and makes a noticeable difference, especially if you tend to sit for long stretches. My lower back used to get sore after a few hours, but that hasn’t really been an issue since switching to this chair. The mesh back is also a nice touch—it keeps things breathable, which I didn’t think I’d care about until I had it. Assembly was pretty straightforward. Took me maybe 20–25 minutes without any frustration. Everything lined up well, and the instructions were clear enough. In terms of comfort, the seat is firm but not hard. It doesn’t feel like one of those super plush chairs, but I actually prefer that because it feels more supportive over time. The reclining feature is smooth, and I like that you can lean back a bit when you need a break. Overall, I’d say this is a great value for a home office setup. If you want something ergonomic and comfortable without spending a fortune, this chair is definitely worth considering.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Excellent Office Chair
Color: Black+white, Size: Pack of 1
I just received my TRALT Office Chair. First of all, I was impressed with the packaging of this item. When I opened the box each piece of the chair was wrapped in plastic or bubble wrap. Everything in the box arrived safely and without damage. Secondly, the instructions to assemble the chair were very each to follow. I was impressed with the Allen wrench which had a handle attached to it. This made screwing in the screws very easy. I was able to assemble the chair without any difficulty. Lastly, the look of the chair and the comfort is exceptional. I ordered the black/white chair which looks amazing. The comfort of the chair is really excellent. My back is supported by the lumbar seat and having the armrests being able to go up when not needed is wonderful. The quality of the chair is definitely worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
J
Verified Purchase
Jennifer3002
Phoenix, US
★★★★★ 4
a good choice
Color: Black, Size: Pack of 1, Color: Black, Size: Pack of 1
Assembled chair only to find that the lift cylinder was faulty. Would have preferred to be able to just get a replacement cylinder but calling China didn't seem like a viable option. Guessing which one & buying it online would involve paying for a good portion of what the chair cost. Customer service could only offer a replacement or refund. We're disassembling (so much fun?!) to send it back. The chair itself was very comfortable, assembled fairly easily and instructions pretty clear. Again, if we could only have asked the seller for the replacement part......**Update**...Or if the instructions that seemed so clear were clearer!, as we started to disassemble, we decided to see what would happen if the tension knob (see photo) was loosened. IT ALLOWED THE LIFT CYLINDER TO WORK. Not at all what the instructions say. At any rate, we're keeping the chair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026

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