bluetooth 4.2 module
bluetooth 4.2 module
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GNSS Module


Small Size GNSS Positioning Module SKM81F

The SKM81F is a complete GNSS engine module that features super sensitivity, ultra low power and small form factor.

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Accuracy 3m
Dimension(L×W×H) 18*18*6.3(mm)

The SKM81F is a complete GNSS engine module that features super sensitivity, ultra low power and small form factor. The GNSS signal is applied to the antenna input of module, and a complete serial data message with position, velocity and time information is presented at the serial interface with NMEA protocol or custom protocol.
It is based on the high performance features of the single-chip architecture, Its –165dBm tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GNSS was not possible before. The small form factor and low power consumption make the module easy to integrate into portable device like PNDs, mobile phones, cameras and vehicle navigation systems.


◆GPS/BDS/QZSS reseiver

◆ Ultra high sensitivity: -165dBm

◆ Extremely fast TTFF at low signal level

◆ Built-in 12 multi-tone active interference canceller

◆ Ultra low power consumption

◆±10ns high accuracy time pulse (1PPS)

◆ Advanced Features: AlwaysLocate; AIC; EPO;EASY


◆ Operating temperature range: -40 to 85℃

◆ Small form factor: 18x18x6.3mm

◆ RoHS compliance (Lead-free)

Parameter Specification
Sensitivity track -165dBm
capture -148dBm
Accuracy position 3.0m CEP50 without SA(Typical Open Sky)
speed 0.1m/s without SA
Timing(PPS) 10ns RMS
Start Time Cold start 23s(Typical Open Sky)
Hot Start 2-3s
Hot Start 1s
Reacquire <1s
Auxiliary GPS support EPO
Power consumption track 25mA @3.3V Typical
capture 30mA @3.3V
Data update rate 10Hz Max Default 1Hz
Limit height Max 18,000m
speed Max 515m/s
acceleration Less than 4g

◆LBS (Location Based Service)

◆PND (Portable Navigation Device)

◆ Vehicle navigation system

◆Mobile phone

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;