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Vermont Real-time

The Real-time Correction component of VECTOR is offered to you, the user as a public service. Use of this site and the information presented is subject the user’s agreement to the connection terms and conditions set forth below.

Connection to this network is not guaranteed. There may be times when this data is unavailable due to system limitations or network outages.

In the preparation of this correction broadcast service, VTrans has endeavored to offer current, correct, and clearly expressed information. Nevertheless, errors may occur. VTrans expressly disclaims any liability, of any kind, or for any reason, that might arise out of any use of the correction information broadcast provided by this service. In particular, but without limiting its disclaimer, VTrans disclaims any responsibility for typographical errors or inaccuracies of the information provided or contained within the broadcast message. VTrans makes no warranties or representations whatsoever regarding the quality, content, completeness, suitability, adequacy, sequence, accuracy, or timeliness of the information and data provided by this service. VTrans makes no warranties or representations of any kind regarding this service that may serve as the basis for holding VTrans and/or the State of Vermont liable, under any circumstances, for any consequence of the use of this information contained in the correction broadcast message. VTrans makes no warranties or representations regarding the condition or functionality of this broadcast service, its suitability for use, or that this broadcast service will be uninterrupted or error-free.

Real-time corrections are available from VECTOR under the following conditions:

  • Connections from field receiver to network must be made through the Internet.

  • User authentication will make use of NTRIP (Network Transport of RTCM via Internet Protocol): A secure login (Username, Password) is required. Users must “register” to use this service by filling in and submitting the on-line registration.

  • Field receiver must have NTRIP communication ability.

  • Single base data streams are transmitted in RTCM version 3.1. VRS data streams are transmitted in RTCM 3.1 and CRM Plus.

RTK correction data is obtained by connecting to a specific IP address, port, and mountpoint. Note that the mountpoint is case sensitive. For instance, if one were to request corrections from station Bradford, the connection string would be However, if users input simply the IP address and port, the user should be presented with the “SourceTable” which is the list of available mountpoints. The user can then just select the mount point from the list.

All connections are made through port 2101.

Bennington VTBE VTBE_RTCM3 Bennington Fire Station GPS+GLONASS L1/L2
Danby VTDA VTDA_RTCM3 Currier Memorial School GPS+GLONASS L1/L2
Derby VTD9 VTD9_RTCM3 Dist. 9 Garage GPS+GLONASS L1/L2
Dummerston VTD2 VTD2_RTCM3 Dist. 2 Garage GPS+GLONASS L1/L2
Enosburg Falls VTEB VTEB_RTCM3 Enosburg Maint. Garage GPS+GLONASS L1/L2
Hardwick VTHA VTHA_RTCM3 Hazen Union High School GPS+GLONASS L1/L2
Island Pond VTIP VTIP_RTCM3 Island Pond Dist. Garage GPS+GLONASS L1/L2
Johnson VJSC VJSC_RTCM3 Johnson State College GPS+GLONASS L1/L2
Middlebury VTMI VTMI_RTCM3 Middlebury Middle School GPS+GLONASS L1/L2
Randolph VTC1 VTC1_RTCM3 VT Tech. College GPS+GLONASS L1/L2
Rutland VTRU VTRU_RTCM3 Asa Bloomer Bldg. GPS+GLONASS L1/L2
Richmond VTRI VTRI_RTCM3 Camels Hump Middle School GPS+GLONASS L1/L2
Springfield VTSP VTSP_RTCM3 Springfield HS GPS+GLONASS L1/L2
St. Johnsbury VTD7 VTD7_RTCM3 Dist. 7 Garage GPS+GLONASS L1/L2
Montpelier VCAP VCAP_RTCM3 133 State Street GPS+GLONASS L1/L2
White River Jct. VTWR VTWR_RTCM3 Dist. Court House GPS+GLONASS L1/L2
Network VRS VRS_RTCM3 Statewide GPS+GLONASS L1/L2
Network VRS VRS_CMRp Statewide GPS+GLONASS L1/L2