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Nationwide Differential GPS (NDGPS)
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DGPS SITE CONFIGURATION AND OUTAGE 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.

The U.S. Coast Guard DGPS service is available for positioning and navigation. Users may experience service interruptions without advance notice. U.S. Coast guard DGPS broadcasts should not be used under any circumstances where a sudden system failure or inaccuracy could constitute a safety hazard. 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.

Notes:

1. The DGPS beacon (290 KHz, Site ID 877) is unusable as of 1900Z December 21, 2014 until further notice. Impacts to the DGPS beacon service in Hawaii can be viewed here (clicking on the link will open a new browser window).

2. The Omaha DGPS beacon (298 KHz, Site ID 868) terminated at 1500Z (1100EST) May 15, 2013.

For further inquiries, please contact the Navigation Information Service (NIS) via our Contact Us page or via phone at 703-313-5900.

Please report DGPS problems or outages at our report-a-problem page. Thank you in advance.


CURRENT DGPS ADVISORIES FOR 28 Jan 2015
Site Name Site Id BNM # OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Bakersfield7950020-15
BROADCAST SITE WILL BE UNUSABLE FROM 01/29/2015 16:00 Z TO 01/29/2015 23:59 Z.
Essex8750021-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/05/2015 16:00 Z TO 02/05/2015 23:59 Z.
Bakersfield7950047-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/06/2015 17:00 Z TO 02/09/2015 19:00 Z.
Point Loma8810022-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/21/2015 16:00 Z TO 02/21/2015 23:59 Z.
Pahoa8770603-14
BROADCAST SITE IS UNUSABLE AS OF 12/21/2014 19:00 Z UNTIL FURTHER NOTICE  DUE TO APPROACHING VOLCANIC ACTIVITY.
Detroit8380035-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/09/2015 15:00 Z TO 02/09/2015 18:00 Z.
Saginaw Bay8370038-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/11/2015 15:00 Z TO 02/11/2015 18:00 Z.
Youngstown8390018-15
BROADCAST SITE WILL BE UNUSABLE FROM 03/03/2015 14:00 Z TO 03/03/2015 17:00 Z.
St. Paul (Alma)8640048-15
BROADCAST SITE IS UNUSABLE AS OF 01/28/2015 22:01 Z UNTIL FURTHER NOTICE.
Detroit8380044-15
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 01/26/2015 14:58 Z UNTIL FURTHER NOTICE.
Flagstaff876N006-15
BROADCAST SITE WILL BE UNUSABLE FROM 02/10/2015 15:00 Z TO 02/10/2015 23:00 Z.
GENERAL INFORMATION
No additional information at this time.