DGPS SITE CONFIGURATION INFORMATION
Differential corrections are based on the NAD83 (2011) position of the reference station (REFSTA) antenna. Positions obtained using DGPS should be referenced to NAD 83 coordinate system only. All sites are broadcasting RTCM Type 9-3 correction messages. Please report DGPS problems or outages at our report-a-problem page. Thank you in advance.
Note: The St. Louis, MO DGPS beacon (322 KHz, Site ID 862) terminated at 1400Z (1000 EST), Mar 10, 2017.
For inquiries, please contact the Navigation Information Service (NIS) via our Contact Us page or via phone at 703-313-5900.
Use the pull-down menu below to select the site in which you are interested. Outages, if any, will be shown
below the site parameters after you select the site in which you interested.