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This page provides GPS users a convenient source of Trimble Community Base Station GPS reference data as well as receiver performance reports, and links to GPS related information. This page focuses on forestry related GPS mapping and GIS applications, both C/A code and P code, with emphasis on receiver operation under forest canopy and in backcountry/wildland environments for land management.

Differential Correction and Community Base Stations

• Forest Service and BLM operated Base Stations
• Trimble Community Base Stations
• Continuous Operating Reference Stations

All About GPS

• Beginner's Corner
• Datums, Projections, and Coordinate Systems
• FAQs
• On-line Training
• GPS to GIS—Mark Roper, San Juan NF (Acrobat Document, 2.56MB)
• GPS Myths—Joel Cusick, NPS
• GPS Status—Current and archived GPS status information
• Links to other Federal GPS sites

GPS Equipment and Software

• Garmin
• Trimble
• Magellan (Mobile Mapper)
• ArcPad
• Rockwell PLGR
• Other equipment and software

MTDC Test Reports

Other Forest Service GPS related information

• FS 100th Anniversary Monument (Windows Media Video)
• Forest Service GPS coordinators
• Contacts for USFS and Cooperators Trimble Community Base Stations
• GPS Quick Start Guides
  • ArcPad
  • TerraSync
  • DNRGarmin
  • Garmin GPSMap 76CSx
• Head-To-Head Comparison of Four SiRF-Based GPS Receivers (read disclaimer)