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GNSS Module


Single Frequency Multi-system GNSS Timing Module SKG178T

SKG178T is a GNSS multi-system high-precision timing module. Based on multi-system, low-power, high-performance SoC chip design.

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Timing Accuracy ±20ns
Dimension(L×W×H) 22.4*17*2.4(mm)

SKG178T is a GNSS multi-system high-precision timing module. Based on multi-system, low-power, high-performance SoC chip design. It supports systems such as BDS, GPS, GLONASS and Galileo, and can receive and process two or three of these systems at the same time, or a single system can work independently.

SKG178T supports SBAS, QZSS system and DGNSS data input function, has advanced AGNSS function, and can improve the positioning speed through the auxiliary data service of and CoreStar in the case of networking.

The SKG178T module integrates filters, linear amplifiers and antenna protection functions, and has optimized RF structure and interference suppression capabilities, ensuring that the module can still provide good performance in complex electromagnetic environments.

The SKG178T module supports fixed-point timing, optimized position timing, positioning timing, and can ensure good timing accuracy in complex signal environments.

The SKG178T has a compact form factor and uses SMT pads to support standard pick-and-place and reflow soldering. Fully automated integration, especially suitable for low-cost, low-power applications.


◆Support BDS, GPS, GLONASS, Galileo, QZSS system

◆±20ns high precision pulse (PPS)

◆ PPS is associated with NMEA

◆ Support UART1, UART2

◆ Industrial standard

◆ Compliant with RoHS, FCC, CE standards


Parameter Description Performance Evaluation
Voltage 3.0~3.6V DC
Power 62mW @3.3V
RF Input Frequency BDS B1:1561.098MHZ
GPS L1: 1575.42MHZ
Galileo E1-B/C :1575.42MHZ
Standing-wave ratio ≤2.0
Input impedance 50Ω
Antenna Gain 5~35dB
Physical Size 17x22.4x2.4(mm)
Physical Size 1.7g
Data Interface 2 UARTs, TTL level, baud rate 4800~115200bps
Antenna Testing Support antenna feed, need external antenna detection circuit
First Positioning Time TTFF Cold Start ≤28s
Hot Start ≤1s
Re-Acquisition ≤1s
Sensitivity Tracking -160dBm
Acquisition -155dBm
Precision Position level Open-Sky:  CEP=2.0m
vertical  Open-Sky:  CEP=3.5m
Speed level : 0.1m/s
Dynamic Performance Speed 515m/s
accelerated speed 4g
altitude 18000m
PPS Supported, precision 20ns
Data Updating Rate 1Hz
Navigation Data Format NMEA 0183,Unicore Protocol,RTCM3.2

◆ Electric high-precision timing

◆ Personal timing equipment

◆ Base station high-precision timing

◆ Other high-precision timing

1. who are we?
We are based in Guangdong, China, start from 2006,sell to North America(30.00%),Eastern Europe(15.00%),Western Europe(15.00%),Northern Europe(14.00%),Oceania(5.00%),South Asia(5.00%),Domestic Market(5.00%),South America(4.00%),Southeast Asia(3.00%),Africa(00.00%),Mid East(00.00%),Central America(00.00%),Southern Europe(00.00%).
2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;