Navigation Center Logo
Consolidated Nav Info | DGPS Advisories | GPS Advisories / NANUs | GPS Testing Notices | LNMs | Almanacs | Nav Rules | AIS | Contact Us | Search | Home

Outage information is shown below 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; however, users may experience service interruptions without notice. U.S. Coast Guard DGPS broadcasts should not be used under any circumstances where a sudden system failure or inaccuracy might constitute a safety hazard.
Differential corrections are based on the NAD 83 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.


CURRENT DGPS ADVISORIES FOR 20 NOV 2008
SITE NAMESITE IDBNM #OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Cape Hinchinbrook, AK894864-08UNUSABLE as of 2212Z 01 Oct 2008 UNTIL FURTHER NOTICE
Isabela, PR8171020-08UNUSABLE as of 1300Z 21 Nov 2008 to 2300Z 21 Nov 2008
Isabela, PR8171019-08UNUSABLE as of 1300Z 20 Nov 2008 to 2300Z 20 Nov 2008
Isabela, PR8171026-08UNUSABLE as of 1300Z 22 Nov 2008 to 2300Z 22 Nov 2008
Medora, ND8511016-08UNUSABLE as of 1800Z 20 Nov 2008 to 0200Z 21 Nov 2008
Point Loma, CA8811023-08UNUSABLE as of 1700Z 20 Nov 2008 to 1800Z 20 Nov 2008
GENERAL INFORMATION
No additional information at this time.
 
U.S. Coast Guard Navigation Center 7323 Telegraph Road, Alexandria, VA 22315 | (703) 313-5900 | Download Free Adobe Reader: Adobe Acrobat Reader