New NIST Time Code to Boost Reception for Radio-Controlled Clocks

[Bob Bruhns]

Why do we need higher precision time broadcasts?  Simple.  Our 
governments want to bring back red light cameras.  Since a minimal 
'yellow' period results in a good number of cars being unable to 
possibly stop in time, the precise adjustment of the 'yellow' time to 
within a fraction of a second of legal minimum is key, in order to 
maximize revenue.  This could have been accomplished with any decent 
crystal oscillator, but proper coordination of multiple traffic lights 
in order to maximize gridlock requires wide-area timebase coordination.  
Hence more precise over-the-air timekeeping was needed.

    Bob, WA3WDR



On 3/10/2013 8:04 AM, Phil wrote:
> Very useful - but why would my refrigerator, microwave oven or sprinklers need to know the time to the nearest microsecond?
>
> Phil M1GWZ
>
>
> On 10 Mar 2013, at 04:02, Richard O'Neill wrote:
>
>> http://www.nist.gov/pml/div688/wwvb-030513.cfm
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