What GNSS constellations does XM980‑K4 support?

It supports GPS, BDS, GLONASS, Galileo, QZSS, SBAS, and L‑Band, covering all major global navigation satellite systems.

What is the update rate of XM980‑K4?

It provides RTK and raw data output at up to 50 Hz, ideal for high‑dynamic applications.

What is the RTK accuracy?

Horizontal accuracy is 0.8 cm + 1 ppm, and vertical accuracy is 1.5 cm + 1 ppm.

Yes, it supports PPP with 5 cm horizontal and 10 cm vertical accuracy.

What is the operating voltage?

Operating voltage is 3.6V to 6.0V, typical 5.0V, with current consumption of 80 mA.

Is it suitable for UAV applications?

Yes, its 50Hz update rate and compact size make it ideal for UAV, drone, and autonomous vehicle navigation.

What GNSS constellations does XM980‑K4 support?

It supports GPS, BDS, GLONASS, Galileo, QZSS, SBAS, and L‑Band, covering all major global navigation satellite systems.

What is the update rate of XM980‑K4?

It provides RTK and raw data output at up to 50 Hz, ideal for high‑dynamic applications.

What is the RTK accuracy?

Horizontal accuracy is 0.8 cm + 1 ppm, and vertical accuracy is 1.5 cm + 1 ppm.

Yes, it supports PPP with 5 cm horizontal and 10 cm vertical accuracy.

What is the operating voltage?

Operating voltage is 3.6V to 6.0V, typical 5.0V, with current consumption of 80 mA.

Is it suitable for UAV applications?

Yes, its 50Hz update rate and compact size make it ideal for UAV, drone, and autonomous vehicle navigation.

RTK · 50Hz · HIGH‑SPEED

XM980-K4 RTK GNSS Module – 50Hz High‑Speed Positioning

High‑performance RTK GNSS module based on NebulasIV with 1408 channels, 50Hz update rate, and multi‑constellation support. Delivers centimeter‑level positioning for UAV, autonomous machines, and high‑dynamic applications.

RTK · 50Hz Output

GPS L1/L2/L5 · BDS B1/B2/B3

GLONASS L1/L2 · Galileo E1/E5a/E5b

QZSS L1/L2/L5 · SBAS

0.8 cm + 1 ppm RTK

1408 Channels

0Channels

0RTK (cm+ppm)

0Hz Update

0PPP (cm)

Request a Quote Download Datasheet

PRODUCT OVERVIEW

High‑Speed RTK for Dynamic Applications

The XM980‑K4 is a high‑performance RTK GNSS module built on Unicore’s NebulasIV SoC, featuring 1408 channels and a 50Hz update rate for real‑time, high‑dynamic applications. It delivers centimeter‑level positioning and PPP accuracy, making it ideal for UAV, autonomous vehicles, robotics, and precision agriculture.

XM980-K4 module detail with pin connectors — Key Features
The XM980‑K4 combines multi‑constellation, multi‑frequency tracking with advanced RTK and PPP engines. Its 50Hz output ensures smooth, continuous position updates for fast‑moving platforms.
1408 channels based on NebulasIV SoC
GPS L1/L2/L5 · BDS B1/B2/B3 · GLONASS L1/L2 · Galileo E1/E5a/E5b · QZSS L1/L2/L5 · SBAS · L‑Band
RTK accuracy: 0.8 cm + 1 ppm (horizontal) · 1.5 cm + 1 ppm (vertical)
PPP accuracy: 5 cm (horizontal) · 10 cm (vertical)
50 Hz RTK and raw data output
Compact 35×25×11.1 mm, weight 8 g
Operating voltage 3.6‑6.0V, current 80mA @5V
Industrial temperature -40°C to +85°C

CORE FEATURES

Six Powerful Features of XM980‑K4

Engineered for high‑speed and high‑precision applications, the XM980‑K4 delivers exceptional performance in a compact module.

🛰️

1408 Channels

NebulasIV SoC with 1408 channels tracks all GNSS constellations and frequencies simultaneously for maximum satellite availability.

Learn More →

⚡

50 Hz Update Rate

High‑speed RTK and raw data output at 50Hz — ideal for UAV, drones, and other fast‑moving platforms.

Learn More →

📡

Multi‑Constellation + L‑Band

Supports GPS, BDS, GLONASS, Galileo, QZSS, SBAS, and L‑Band for robust RTK and PPP positioning.

Learn More →

📐

RTK + PPP

Centimeter‑level RTK (0.8 cm+1ppm) and 5cm PPP for flexible correction sources and global precision.

Learn More →

🔗

Compact & Lightweight

35×25×11.1 mm, weight only 8 g, ideal for space‑constrained designs.

Learn More →

🔌

Flexible Interfaces

2 × UART with TTL levels, 1PPS output, and optional CAN — easy integration with host systems.

Learn More →

TECHNICAL SPECIFICATIONS

Detailed Module Specifications

Complete technical parameters for the XM980‑K4 RTK GNSS module.

General

Module Type	RTK GNSS Module
Dimensions	35 × 25 × 11.1 mm
Weight	8 g
Connector	2 × 1.00mm 4‑pin seats (J1, J2)
Operating Voltage	3.6 – 6.0 V (typical 5.0V)
Current Consumption	80 mA @ 5.0V

GNSS Performance

Channels	1408, based on NebulasIV
Frequency Support	GPS L1/L2/L5 · BDS B1I/B2I/B3I/B1C/B2a/B2b* · GLONASS L1/L2 · Galileo E1/E5a/E5b/E6* · QZSS L1/L2/L5/L6* · SBAS · L‑Band
RTK Horizontal (RMS)	0.8 cm + 1 ppm
RTK Vertical (RMS)	1.5 cm + 1 ppm
PPP Horizontal (RMS)	5 cm
PPP Vertical (RMS)	10 cm
Single‑point Horizontal (RMS)	1.5 m
DGPS Horizontal (RMS)	0.4 m
Cold Start	< 20 s
RTK Initialization	< 5 s (typical)
RTK Reliability	> 99.9%
Data Update Rate	50 Hz (RTK) · 50 Hz raw data
Speed Accuracy (RMS)	0.2 m/s
Time Accuracy (RMS)	20 ns

Interfaces & Data

UART	2 × (RX1/TX1, RX2/TX2) TTL levels
1PPS	1 × output for synchronization
CAN	1 × (shared with UART3, optional)
Differential Data	RTCM V3.X
Data Format	NMEA‑0183, Unicore protocol
Baud Rate	4800 – 921600 bps (default 115200)

Indicator Lights

PWR	Red — power input present
TX	Blue (flashing) — data output active
PPS	Blue (flashing after 3D fix) — timing pulse
RTK	Blue (solid in RTK Fixed mode) — RTK status

Environmental

Operating Temperature	-40°C to +85°C
Storage Temperature	-40°C to +105°C
Vibration	MIL‑STD‑810F
Shock	MIL‑STD‑810F

WHY STARMAX

Trusted by GNSS Professionals

We combine technical expertise, manufacturing excellence, and global logistics to deliver reliable GNSS modules.

✅

ISO9001

Quality management certified

📋

CE / FCC / RoHS

Global compliance standards

🔧

OEM / ODM

Custom designs available

🛠️

Technical Support

Expert engineers ready to assist

🏭

Factory Direct

Competitive pricing

📦

Fast Delivery

Global logistics network

🔬

In‑House Testing

Full quality control

⭐

10+ Years

Industry experience

APPLICATION SCENARIOS

Versatile Deployment

The XM980‑K4 is designed for high‑speed and high‑accuracy navigation applications where fast updates are essential.

🚁

UAV & Drone Navigation

50Hz RTK for smooth autonomous flight, mapping, and inspection.

Learn More

🤖

Autonomous Machines

Real‑time positioning for robotics, AGVs, and industrial automation.

Learn More

🚜

Precision Agriculture

High‑speed RTK for tractor guidance and sprayer control.

Learn More

🚢

Marine Navigation

Reliable positioning for vessels and autonomous surface vehicles.

Learn More

🗺️

Surveying & Mapping

Fast RTK fixes for mobile mapping and GIS data collection.

Learn More

🏗️

Infrastructure Monitoring

Dynamic deformation monitoring with high‑rate GNSS.

Learn More

DOWNLOAD CENTER

Resources & Documentation

Access datasheets, user manuals, 3D models, firmware, and SDK for the XM980‑K4 module.

📄

Datasheet

v2.1

1.6 MB

PDF

📘

User Manual

v1.9

4.0 MB

PDF

📐

3D Model

STEP

2.8 MB

ZIP

📦

Firmware

v2.3.5

7.8 MB

BIN

⚙️

SDK & API

v3.0

10.8 MB

ZIP

FAQ

Frequently Asked Questions

Find answers to common questions about the XM980‑K4 RTK GNSS module.

Ready to Get a Quote?

Contact our team today for pricing, technical support, or to request a sample of the XM980‑K4 RTK GNSS Module. We're here to help you integrate high‑speed precision positioning into your next project.

✉ serenasSun@outlook.com 📞 +86 186 7671 6687 💬 WhatsApp: +852 6945 5984 🌐 www.starmax.ltd

Request a Quote

Fill in your details and we'll respond within 24 hours.

RTK · 50Hz · HIGH‑SPEED

XM980-K4 RTK GNSS Module – 50Hz High‑Speed Positioning

RTK · 50Hz Output

GPS L1/L2/L5 · BDS B1/B2/B3

GLONASS L1/L2 · Galileo E1/E5a/E5b

QZSS L1/L2/L5 · SBAS

0.8 cm + 1 ppm RTK

1408 Channels

0Channels

0RTK (cm+ppm)

0Hz Update

0PPP (cm)

Request a Quote Download Datasheet

PRODUCT OVERVIEW

High‑Speed RTK for Dynamic Applications

CORE FEATURES

Six Powerful Features of XM980‑K4

Engineered for high‑speed and high‑precision applications, the XM980‑K4 delivers exceptional performance in a compact module.

🛰️

1408 Channels

NebulasIV SoC with 1408 channels tracks all GNSS constellations and frequencies simultaneously for maximum satellite availability.

Learn More →

⚡

50 Hz Update Rate

High‑speed RTK and raw data output at 50Hz — ideal for UAV, drones, and other fast‑moving platforms.

Learn More →

📡

Multi‑Constellation + L‑Band

Supports GPS, BDS, GLONASS, Galileo, QZSS, SBAS, and L‑Band for robust RTK and PPP positioning.

Learn More →

📐

RTK + PPP

Centimeter‑level RTK (0.8 cm+1ppm) and 5cm PPP for flexible correction sources and global precision.

Learn More →

🔗

Compact & Lightweight

35×25×11.1 mm, weight only 8 g, ideal for space‑constrained designs.

Learn More →

🔌

Flexible Interfaces

2 × UART with TTL levels, 1PPS output, and optional CAN — easy integration with host systems.

Learn More →

TECHNICAL SPECIFICATIONS

Detailed Module Specifications

Complete technical parameters for the XM980‑K4 RTK GNSS module.

General

Module Type	RTK GNSS Module
Dimensions	35 × 25 × 11.1 mm
Weight	8 g
Connector	2 × 1.00mm 4‑pin seats (J1, J2)
Operating Voltage	3.6 – 6.0 V (typical 5.0V)
Current Consumption	80 mA @ 5.0V

GNSS Performance

Channels	1408, based on NebulasIV
Frequency Support	GPS L1/L2/L5 · BDS B1I/B2I/B3I/B1C/B2a/B2b* · GLONASS L1/L2 · Galileo E1/E5a/E5b/E6* · QZSS L1/L2/L5/L6* · SBAS · L‑Band
RTK Horizontal (RMS)	0.8 cm + 1 ppm
RTK Vertical (RMS)	1.5 cm + 1 ppm
PPP Horizontal (RMS)	5 cm
PPP Vertical (RMS)	10 cm
Single‑point Horizontal (RMS)	1.5 m
DGPS Horizontal (RMS)	0.4 m
Cold Start	< 20 s
RTK Initialization	< 5 s (typical)
RTK Reliability	> 99.9%
Data Update Rate	50 Hz (RTK) · 50 Hz raw data
Speed Accuracy (RMS)	0.2 m/s
Time Accuracy (RMS)	20 ns

Interfaces & Data

UART	2 × (RX1/TX1, RX2/TX2) TTL levels
1PPS	1 × output for synchronization
CAN	1 × (shared with UART3, optional)
Differential Data	RTCM V3.X
Data Format	NMEA‑0183, Unicore protocol
Baud Rate	4800 – 921600 bps (default 115200)

Indicator Lights

PWR	Red — power input present
TX	Blue (flashing) — data output active
PPS	Blue (flashing after 3D fix) — timing pulse
RTK	Blue (solid in RTK Fixed mode) — RTK status

Environmental

Operating Temperature	-40°C to +85°C
Storage Temperature	-40°C to +105°C
Vibration	MIL‑STD‑810F
Shock	MIL‑STD‑810F

WHY STARMAX

Trusted by GNSS Professionals

We combine technical expertise, manufacturing excellence, and global logistics to deliver reliable GNSS modules.

✅

ISO9001

Quality management certified

📋

CE / FCC / RoHS

Global compliance standards

🔧

OEM / ODM

Custom designs available

🛠️

Technical Support

Expert engineers ready to assist

🏭

Factory Direct

Competitive pricing

📦

Fast Delivery

Global logistics network

🔬

In‑House Testing

Full quality control

⭐

10+ Years

Industry experience

APPLICATION SCENARIOS

Versatile Deployment

The XM980‑K4 is designed for high‑speed and high‑accuracy navigation applications where fast updates are essential.

🚁

UAV & Drone Navigation

50Hz RTK for smooth autonomous flight, mapping, and inspection.

Learn More

🤖

Autonomous Machines

Real‑time positioning for robotics, AGVs, and industrial automation.

Learn More

🚜

Precision Agriculture

High‑speed RTK for tractor guidance and sprayer control.

Learn More

🚢

Marine Navigation

Reliable positioning for vessels and autonomous surface vehicles.

Learn More

🗺️

Surveying & Mapping

Fast RTK fixes for mobile mapping and GIS data collection.

Learn More

🏗️

Infrastructure Monitoring

Dynamic deformation monitoring with high‑rate GNSS.

Learn More

DOWNLOAD CENTER

Resources & Documentation

Access datasheets, user manuals, 3D models, firmware, and SDK for the XM980‑K4 module.

📄

Datasheet

v2.1

1.6 MB

PDF

📘

User Manual

v1.9

4.0 MB

PDF

📐

3D Model

STEP

2.8 MB

ZIP

📦

Firmware

v2.3.5

7.8 MB

BIN

⚙️

SDK & API

v3.0

10.8 MB

ZIP

FAQ

Frequently Asked Questions

Find answers to common questions about the XM980‑K4 RTK GNSS module.

Ready to Get a Quote?

✉ serenasSun@outlook.com 📞 +86 186 7671 6687 💬 WhatsApp: +852 6945 5984 🌐 www.starmax.ltd

Request a Quote

Fill in your details and we'll respond within 24 hours.

XM980-K4 RTK GNSS Modules

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XM980-K4 RTK GNSS Module – 50Hz High‑Speed Positioning

High‑Speed RTK for Dynamic Applications

Key Features

Six Powerful Features of XM980‑K4

1408 Channels

50 Hz Update Rate

Multi‑Constellation + L‑Band

RTK + PPP

Compact & Lightweight

Flexible Interfaces

Detailed Module Specifications

Trusted by GNSS Professionals

ISO9001

CE / FCC / RoHS

OEM / ODM

Technical Support

Factory Direct

Fast Delivery

In‑House Testing

10+ Years

Versatile Deployment

UAV & Drone Navigation

Autonomous Machines

Precision Agriculture

Marine Navigation

Surveying & Mapping

Infrastructure Monitoring

Resources & Documentation

Datasheet

User Manual

3D Model

Firmware

SDK & API

Frequently Asked Questions

Explore More GNSS Solutions

UM982

UM980

XM-A770

XM-A560

Ready to Get a Quote?

Request a Quote

XM980-K4 RTK GNSS Module – 50Hz High‑Speed Positioning

High‑Speed RTK for Dynamic Applications

Key Features

Six Powerful Features of XM980‑K4

1408 Channels

50 Hz Update Rate

Multi‑Constellation + L‑Band

RTK + PPP

Compact & Lightweight

Flexible Interfaces

Detailed Module Specifications

Trusted by GNSS Professionals

ISO9001

CE / FCC / RoHS

OEM / ODM

Technical Support

Factory Direct

Fast Delivery

In‑House Testing

10+ Years

Versatile Deployment

UAV & Drone Navigation

Autonomous Machines

Precision Agriculture

Marine Navigation

Surveying & Mapping

Infrastructure Monitoring

Resources & Documentation

Datasheet

User Manual

3D Model

Firmware

SDK & API

Frequently Asked Questions

Explore More GNSS Solutions

UM982

UM980