Of interest to all who use GPS for navigation the FAA has issued a flight advisory:
"GPS signal may be unreliable or unavailable due to tests the Department of Defense will be conducting between January 20, and February 22 2011".
The tests when they occur will be active for 45 minutes and be followed by 15 minutes of OFF time. Additional notices to pilots will apparently be given at least 24 hours prior to any test.
NAUTICAL LOG has not seen any information from either USCG 5th. District Portsmouth, VA or 7th. District Miami, FL as of yet but will update here as necessary. NAUTICAL LOG has now been updated that marine interests should go to http://www.navcen.uscg.gov/ for the maritime information.