WKG0254T03Y01 is a high-performance, low-power GNSS multi-constellation positioning module. It is based on the AT6850B SoC, an 8th-generation low-power chipset from Zhongke Micro. The chip integrates an RF front-end, digital baseband, BeiDou signal processing engine, and power management unit, providing high integration and simplified external circuitry.

WKG0254T03Y01 supports BeiDou-2 and BeiDou-3, including B1I and B1C signals, and enables standalone BeiDou positioning and timing.

With high sensitivity, low power consumption, and compact design, the module is suitable for applications such as vehicle positioning and navigation, power system timing, 4G/5G communication timing, and IoT positioning devices.

Key Features

l Supports BDS-2 / BDS-3 (B1I, B1C)

l Supports A-BDS

l Cold start sensitivity: -148 dBm

l Hot start sensitivity: -156 dBm

l Reacquisition sensitivity: -160 dBm

l Tracking sensitivity: -162 dBm

l Position accuracy: 1.5m (CEP50)

l TTFF: ≤23s

l Low power consumption (~30mA @5V)

l Integrated LNA

l Built-in 25x25x4mm ceramic antenna(customization size available) 

l Fast hot start (<1s) with onboard capacitor

l Standard NMEA-0183 output

Applications

l Vehicle navigation and tracking

l Power timing / 4G/5G synchronization

l IoT positioning devices

l UAV (drones)

l Portable device

Assisted GNSS

Supports A-BDS, providing assistance data such as ephemeris, approximate position, and time.

This significantly reduces Time-To-First-Fix (TTFF), even in weak signal environments.

Output Protocol

The module outputs data via UART interface using NMEA-0183 protocol.

Performance Specifications