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Continuous Operation Reference Station (CORS)

Location: 1090 O Road, Mack, Colorado

  • Trimble Alloy / Zephyr 3 Geodetic Antenna / Trimble Pivot Platform
  • L1/L2 APC - datum: NAD83(2011)
  • latitude: 39° 13' 21.09183" N
  • longitude: 108° 51' 05.90441" W
  • HAE: 1393.331m
  • APC NAVD88 orthometric height = 1410.813m / 4628.642usft

  • Broadcasting RTK corrections @ 464.5000 MHZ
  • Trimble TDL450H RADIO @ 35W
  • Protocol mode  TT450S or TrimMark3
  • Radio link rate: 9600bps
  • Correction type: CMR+ (RTVRN - CMR+ / CMRx) 

RINEX hourly files 24hrs / 7days

GPS specs: 1 second intervals / 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.

Blue sky dominating a desert landscape shows a GPS antenna set next to a small antenna dish with a car metal barrier placed in front for protection.

      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.