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Nationwide Differential GPS (NDGPS)
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DGPS SITE CONFIGURATION INFORMATION

Outage information is shown next to each site. It is requested that users notify the Navigation Information Services Watchstander at (703) 313-5900 or via email regarding any observed outages, problems, or requests.

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 following DGPS beacon signals were terminated on September 30, 2018.
  • Pigeon Point, CA (287 KHZ, Site ID 883)
  • Robinson Point, WA (323 KHZ, Site ID 887)
  • Annapolis, MD (301 KHZ, Site ID 847)
  • Bobo, MS (297 KHZ, Site ID 792)
  • New Bern, NC (294 KHZ, Site ID 771)
For inquiries, please contact the Navigation Information Service (NIS) via our Contact Us page or via phone at 703-313-5900.

CURRENT DGPS ADVISORIES FOR 15 Nov 2018
Site Name Site Id BNM # OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Lincoln7640253-18
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 08/28/2018 16:39 Z UNTIL FURTHER NOTICE.
Sandy Hook8040332-18
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 11/15/2018 20:14 Z UNTIL FURTHER NOTICE.
Card Sound8080329-18
BROADCAST SITE WILL BE UNUSABLE FROM 11/17/2018 14:00 Z TO 11/17/2018 15:00 Z.
Appleton8710328-18
BROADCAST SITE WILL BE UNUSABLE FROM 11/27/2018 17:00 Z TO 11/27/2018 19:00 Z.
Wisconsin Point8300326-18
BROADCAST SITE WILL BE UNUSABLE FROM 12-07-2018 13:00 Z TO 12-09-2018 00:01 Z.
GENERAL INFORMATION
No additional information at this time.