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Russia Requires WiFi Registration
While WiFi wasn’t as broadly unlicensed in Russia as it is in most other industrialized nations, your can not find wifi antenna anywhere a state regulator exempted indoor use in certain bands from registration. The Mass Media agency apparently believes that it has the authority to compel this, although there’s some doubt by observers as to whether it really falls in their purview.
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GM-77Q provides customer high position, velocity and time accuracy performances as well as high sensitivity and tracking capabilities. Customers benefit from the strength of both companies.
Thanks to the low power consumption technology, the G-Mouse receiver is ideal for many portable applications such as PDA, Tablet PC, smart phone etc.



  • 44-channels GPS search engine
  • Cold/Warm/Hot Start: 30sec/28sec/1sec
  • Superior sensitivity: -159 dBm for Superior urban canyon.
  • Support A-GPS function.
  • Reacquisition time: 0.1 sec.
  • Low power consumption.(55mA)
  • Support of SBAS(WAAS / EGNOS) satellites for navigation
  • Compact Size, Easy integration into hand-held device.
  • Built-in low noise, high gain active antenna
  • Apply to host devices with USB or PS2



  • Automotive
  • Personal/Portable Navigation (PDA)
  • Geographic Surveying
  • Sports and Recreation



GPS Features Datum
Chipset Skytraq low power chipset WGS-84
Frequency L1, 1575.42MHz  
C/A Code 1.023MHz chip rate Dynamic Conditions
Channels Supports 44 channels Altitude <18,000 m (60,000feet)
Antenna Built-in 25x25x4mm patch antenna


Velocity <515 m/s (1000 knots)
  Acceleration <4G
Sensitivity Motional Jerk 20m/sec3 max.
To - 159dBm Tracking,  
Superior Urban Canyon Performance Interface
  GPS Protocol: NMEA-0183 - GGA, GSA, GSV, RMC, VTG(Default)
Time to First Fix (TTFF) Skytraq Binary
Cold Start 30 sec, average Data bit: 8, stop bit: 1 (Default)
Warm Start 28 sec, average Baud Rate : 9600 (Default)


Hot Start 1 sec, average Device Size and Weight
Reacquisition 0.1 sec 26.0x26.0x6.5(mm)
Update rate 1 Hz (std.)  


    Environmental Characteristics
Accuracy Operating Temperature - 10°C to + 60°C
Position 5m CEP without SA, 10m 2D, RMS  Storage Temperature - 20°C to + 85°C
Velocity 0.1m/sec, without SA    
Time 1μs synchronized to GPS time Power
    Operation Current 55mA (Average)
    Power Input


3.3V ±5% VDC input


All specifications are subject to change without notice


Hardware Interface
The GM-77Q includes an antenna in a unique style waterproof gadget. We can manufacture five kinds of connector cable to suit your demands.

GM-77Q Standard PIN OUT

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