[time-nuts] Garmin GPS12XL V3.51

[Joe Leikhim]

Thanks! I don't ever think I relied on the date in the unit.  It is 
going to get some use soon. I would have no idea what to replace it with.

Next I need to check out my Symmetricom / /Datum 9390/-/6000/ EXACTIME 
next. The antenna has been off \for a while. It was updated some years 
back to what was the latest and last version.


On 4/6/2019 1:04 AM, Peter Putnam wrote:
> From the Garmin web-site at:
> https://support.garmin.com/en-US/?faq=jXw3hvTdo24PunZy4yOpX8&productID=87&searchQuery=date%20error&tab=topics
>
>
>   GPS 12 Time and Date are Incorrect
>
> We’ve identified an issue with this product that causes the date 
> and/or time to be wrong after the GPS Rollover on April 6th, 
> 2019. However, all functions not dependent on date and/or time will 
> continue to work normally. Due to the age of the device we have 
> determined we will not fix this issue.
>
> *What does that mean for my Garmin**?*
>
>   * The date and/or time determined by the GPS will be wrong
>   * Position, velocity, navigation, and all other functionality not
>     dependent on date and/or time will continue to work normally
>
> *What is GPS Week Rollover?*
>
> The GPS satellite system communicates the date via a week number that 
> is limited to 1024 weeks (about 20 years). On April 6th, 2019 the week 
> numbers broadcast by the satellites will “rollover” to zero. If GPS 
> receivers don’t account for this rollover in their software, it will 
> calculate the wrong date and/or time.
>
>
>
> On 4/5/2019 8:40 PM, Joe Leikhim wrote:
>> Just checked my wonderful Garmin GPS12XL tonight. before midnight UTC 
>> I checked navigation and UTC time and all was well. I did not bother 
>> to check date for some reason. Well now April 6 2019 at 03:39:19 UTC 
>> I see the time is 21 August 99 and no apparent way to change. The 
>> navigation and time seem correct.
>>
>> I heard there was a way to reset these to current date. Any thoughts? 
>> Can I still use this as a tool for gathering waypoints with precision?
>>
>
>
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-- 
Joe Leikhim


Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com

407-982-0446

WWW.LEIKHIM.COM