If you are using or testing the Oregon Real Time GPS Network, and are using an AT&T cell phone to connect, please contact Jim Lahm to obtain instructions on Bluetooth setup and dialing string requirements for your Windows Mobile device.

Link to the Washington State Reference Network.  Testing accounts are free for 90 days.

Link to the NGS Web site describing the new specifications for RTK work: www.ngs.noaa.gov:80/CORS-Proxy/NGSRealtimeGNSS/welcomeNGSNtrip.jsp

The Oregon Department of Transportation's Geometronics Unit is establishing an Oregon Real Time GPS Network in cooperation with other state, local, and government agencies and private companies.

The Spatial Reference Center of Washington -the Spatial Reference Center of Washington (SRCW) is dedicated to the planning, implementation, and maintenance of an accurate state-of-the-art network of GPS control stations necessary to meet the demands of government and private businesses for a reliable spatial reference system in the state of Washington.

Washington State Geographic Information Council

UNAVCO Plate Boundary Observatory  -responsible for the installation of 149 permanent GPS stations and 8 Strainmeter/Tiltmeter stations in Oregon, Washington, and Idaho.

National Geodetic Survey -with links to CORS data & software, including free download of Geoid 2003 software.

US Coast Guard Navigation Center -GPS Information

GPS Notice Advisory to Navigation Users (NANU) -GPS constellation status

US Forest Service GPS Page -with links to GPS Community Base Station Data

Civil GPS Service Interface Committee -the recognized worldwide forum for interaction between civil GPS Users and U.S. GPS authorities.

Localized GPS Service Interruption Notices -important information for accurate mission planning

GPS Report-A-Problem Worksheet -to report degradations, outages, or other incidents or anomalies affecting GPS service.

Geomagnetic Activity Affecting GPS -click on "Planetary K-Index Plot" to see if the magnetic field has been disturbed during the last 72 hours.  K-indices of 5 or greater, indicated on the chart in red, indicate storm-level geomagnetic activity that may affect GPS.

Professional Land Surveyors of Oregon (PLSO) 

Oregon State University/Rensselaer Polytechnic Institute  -monitoring geodetic motions in the US Pacific Northwest (data available)

University of Washington Geodesy/Geophysics -Pacific Northwest Geodetic Array (PANGA)

The Geographer's Craft Project, GPS Resource: Department of Geography, The University of Colorado at Boulder

Northern California GPS Users Group

Northwest Washington GIS Users Group

Washington GIS Community-URISA Washington Chapter Discussion Board

GPS World Magazine -the premiere trade magazine for GPS users

GPS User Magazine -lots of GPS links on their GPS links page

Download Corpscon V. 6.0 for Windows -which allows the user to convert coordinates between Geographic, State Plane and Universal Transverse Mercator (UTM) systems on the North American Datum of 1927 (NAD 27), the North American Datum of 1983 (NAD 83) and High Accuracy Reference Networks (HARNs).