Skip to main content

Continuous Operation Reference Station (CORS)

Location: Mesa County Landfill, Grand Junction, Colorado 

  • Trimble Alloy / Choke Ring Antenna / Trimble Pivot Platform
  • L1/L2 APC - datum: NAD83(2011)
  • Latitude: 39° 00' 52.89774" N
  • Longitude: 108° 29' 24.11237" W
  • HAE: 1491.372m
  • APC NAVD88 orthometric height = 1508.160m / 4948.022usft
GPS choke ring antenna pushed into the desert ground with a snow covered mountain in the background.

  • Broadcasting RTK corrections @ 464.6250 MHZ
  • Trimble TDL450H 35W radio
  • Protocol mode: TT450S or TrimMark3
  • Radio link rate: 9600bps
  • Correction type: CMR+ (RTVRN - CMR+ / CMRx)

RINEX hourly files 24hrs / 7days

GPS specs: 1 second interval / 5° elev. mask / 99.0 PDOP mask

RINEX index and general download directions

For more information including login/password for the RINEX files, contact the CORS administrator at 970-244-1826 or trent.howell@mesacounty.us.

Disclaimer and Limitation of Liability

Mesa County, Colorado, shall in no event be liable or responsible for any lost profits or any damages of any kind, including but not limited to special, indirect, or consequential damages arising out of or in connection with the use or the inability to use the data hereon or the services provided. Mesa County provides this data and its services as a convenience to its customers. Furthermore, Mesa County reserves the right to change, revise, or otherwise discontinue published data and these services at any time without further notice.