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Quick Details

  • D/C: GPS module with antenna
  • Package: SMT
  • Model Number: SKM56
  • Type: GPS receiver module
  • Brand Name: Skylab
  • Place of Origin: Guangdong, China (Mainland)
  • Name: Skylab GPS Receiver Data Logger
  • High sensitivity: -165dBm
  • Operating temperature range: -40 to 85℃
  • Tiny form factor: 12*12*6.5mm
  • Support: NMEA-0183 compliant protocol or custom protocol
  • Low power consumption: Typical 20mA 3.3V
  • Feature: Built in high gain LNA
  • Operating Temperature: -40~85 C
  • Dissipation Power: 66mW
  • Supply Voltage: 3.0-4.2V

Packaging & Delivery

Packaging Details: SKM56 modules are shipped in ESC and moistureproof packing tray and with 24 units per tray. Each tray in 'dry' package
Delivery Detail: 3-7days

Skylab Small Size Antenna GPS Module MT3337 Chipset Smallest GPS Receiver  SKM56 12*12*6.5mm


The SKM56 is a complete GPS engine module that features super sensitivity, ultra low power and small form factor. The GPS 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 MediaTek MT3339 single-chip architecture, Its –165dBm tracking sensitivity extends positioning coverage into place like urban canyons and dense foliage environment where the GPS 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.

2. Features:

Ultra high sensitivity: -165dBm
Extremely fast TTFF at low signal level
Built in high gain LNA
Low power consumption: Typical 20mA 3.3V
NMEA-0183 compliant protocol or custom protocol
Operating voltage: 3.0V to 4.2V
Operating temperature range: -40 to 85°C
Small form factor: 12x12x6.5mm
RoHS compliant (Lead-free)


LBS (Location Based Service)
PND (Portable Navigation Device)
Vehicle navigation system
Timing application

4.Performance Specification




Receiver Type

L1 frequency band,  C/A code,  22 Tracking / 66 Acquisition-Channel




-165dBm Typical

-148dBm Typical





Timing (PPS)

3.0m CEP50 without SA(Typical Open Sky)

0.1m/s without SA

10ns RMS

Acquisition Time

Cold Start

Warm Start

Hot Start


23s(Typical Open Sky)




Assisted GPS support


Power Consumption



20mA @3.3V Typical

27mA @3.3V

Navigation Data Update Rate

Max 10Hz

Default 1Hz

Operational Limits




Max 18,000m

Max 515m/s

Less than 4g



5.Picture reference:

6. Company profile:



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