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Sat Nav GPS week number roll over.

Sparkingchip
An email from Tom Tom offering me a “good deal” on a new Sat Nav


The GPS Week Number Rollover (WNRO) occurs every 19 years, with the next roll over taking place on 6 April 2019. Similar to odometers in older cars rolling over from 99,999 km to 0, the GPS WNRO is the resetting of the GPS calendar back to 0. 


When the calendar resets, it can cause a miscommunication between GPS satellites and GPS receiver chips. As a result, some chips in satnavs will lose the ability to process certain functions. 


What does this mean for you? It’s time to check your satnav. Depending on your device, you may need to update or upgrade.


So that is why I cannot set the the time on my Tom Tom Sat Nav!


Andy
Parents
  • 0
    I’m not even sure how old the Sat Nav is, I’ve only ever had two and the Sat Nav does have some roads missing such as across the back of Torquay.


    I have started using a phone Sat Nav app, but on some trips still run the old Sat Nav alongside it as the navigation is generally clearer and I have had someone phone me just as I have been approaching a complicated junction which throws the app off the phone screen.


    I suppose I can bite the bullet and buy a new dedicated Sat Nav.


     Andy
Reply
  • 0
    I’m not even sure how old the Sat Nav is, I’ve only ever had two and the Sat Nav does have some roads missing such as across the back of Torquay.


    I have started using a phone Sat Nav app, but on some trips still run the old Sat Nav alongside it as the navigation is generally clearer and I have had someone phone me just as I have been approaching a complicated junction which throws the app off the phone screen.


    I suppose I can bite the bullet and buy a new dedicated Sat Nav.


     Andy
Children
No Data

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