[ntp:questions] .1 Microsecond Synchronization

Richard B. Gilbert rgilbert88 at comcast.net
Sat Jun 6 01:16:29 UTC 2009

Rob wrote:
> Unruh <unruh-spam at physics.ubc.ca> wrote:
>> "Richard B. Gilbert" <rgilbert88 at comcast.net> writes:
>>> Harlan Stenn wrote:
>>>> The time on my cellphone is routinely more than 3 seconds off of GPS time.
>>> Is your cell phone "CDMA"?   Other technologies, there are several, may 
>>> not require the precise timing that CDMA does!
>> It will be hard for them to get CDMA in London, or Paris, or in fact anywhere in the world except
>> N America.
> It has always amazed me that in an all-digital system like GSM there is
> no standard way to communicate wallclock time from the network to the
> handhelds.  Even a once-per-hour time transmission that would sync the
> freerunning clock in the phone would be fine for most users.

I tend to rely on my wrist watch for time rather than my cell phone.

Also, I think most people buy cell phones to use as phones and would 
never miss having the correct time on the phone.

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