SiRFstar III

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SiRFstar III is a GPS processing chip manufactured by SiRF Technology, Inc. It is used in some newer portable GPS units such as the Garmin GPSMap 60CSx. It is able to acquire a fix much better than older chips. It works in many cases in narrow streets, in trains, sometimes even indoors, where older chips don't get a useable signal any more. The chip uses 200,000 correlators to fix the position, and will operate on 20 channels with signals as low as -159 dBm. Also supports WAAS.

Devices using SiRFstar III

The following devices are known to use the SiRFstar III chipset:

  • Fujitsu-Siemens PocketLoox N560
  • Garmin Edge 305
  • Garmin Edge 705
  • Garmin Forerunner 205
  • Garmin Forerunner 305
  • Garmin GPSMap 60Cx
  • Garmin GPSMap 60CSx
  • Garmin GPSMap 76Cx
  • Garmin GPSMap 76CSx
  • Globalsat BT-338
  • Globalsat DG-100
  • i-gotU GT-120
  • i-gotU GT-600
  • Mio P550
  • Nokia LD-3W
  • Nokia LD-4W
  • Royaltek RGM-3800
  • TomTom Go 510
  • TomTom Go 710
  • TomTom Go 910
  • Trimble Juno series [1]

See also