WARNING!
Make sure your GPS/Chartplotter is working properly before leaving the dock. No Joke. A binary overflow on the GPS system has caused many units to miss operate, or not function at all. My Lowrance HDS gen2 touch was effected, and we had no GPS today.
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#gps #nofix #lowrance #hsd #gen2 #touch #weekrollover #chartplotter #navigation #satellite #navionics #cmaps #charts #tides #fishing #boating #cruising #carolinaskiff #skifflife #georgetownwater
The GPS Week Number Rollover 2019 occured on the night of April 6 to April 7 2019.[1] The United States Department of Homeland Security, Cyber Security Center and the International Civil Aviation Organization have issued a warning on this issue.[2][3]
GPS Week Number Rollover 2019
Location
Earth
Participants
GPS users
At midnight (UTC), the GPS Week value changes from 2047 to 2048, and the Global Positioning System (GPS) system weekly counter overflows because it is stored in only ten bits, so the range is 0– 1023, the internal value thus changes to zero again.[2] This phenomenon happens every 1024 weeks (every 19.7 years). The previous rollover took place in 1999 when GPS Week 1024.[2] GPS is not only used for positioning, but also for accurate time. Time is used to accurately synchronize payment operations, broadcasters, and mobile operators.[2] Some older devices that use GPS could stop working or move back in time by 20 or 40 years.[2]
22’ Carolina DLV - For Reel
That wouldn’t have been fun off shore… I did notice last week that my tracks are all off by about a 1/4 mile on my GPS… I sure wouldn’t mind going back about 20 yrs though! lol
Thanks for the details.
Fishing Nerd
“skilled labor isn’t cheap, cheap labor isn’t skilled”
Good technical explanations above. I know it is not likely here, but the Russians have been using “GPS Spoofing” near some of their military bases to throw off possible drone attacks.
spec
1980 Skandia 21 w/ '93 JohnRude 150 gas drinker
Good technical explanations above. I know it is not likely here, but the Russians have been using “GPS Spoofing” near some of their military bases to throw off possible drone attacks.
spec
1980 Skandia 21 w/ '93 JohnRude 150 gas drinker