[time-nuts] Cell timing error

Bob Camp lists at rtty.us
Sat Dec 15 23:25:11 UTC 2012


There are a *lot* of layers between the base station and the phone it's self when it comes to the time that's displayed. There also are a *lot* of opportunities  for error as each layer is linked together. Often when you see "Verizon" you are actually connected to "Bob's Cell Phone Tower".  Bob may or (may not) be very careful about linking all the layers together. 

Best bet, use something like an NTP client, that goes *around* all the network "stuff".


On Dec 15, 2012, at 5:43 PM, Jim Lux <jimlux at earthlink.net> wrote:

> On 12/15/12 2:16 PM, Scott McGrath wrote:
>> In a prior life we had a CDMA timing receiver for NTP which used VZ for its source
>> On Dec 15, 2012, at 12:18 PM, Graham / KE9H <timenut at austin.rr.com> wrote:
>>> You should switch to Verizon.
>>> They are inherently accurate to milliseconds.
>>> Sub micro-seconds inside the base stations.
>>> On 12/15/2012 12:51 PM, Greg Troxel wrote:
>>>> In central mass, AT&T and tracfone (? carrier) are showing phone times very close to 1 min slow.  Virgin/sprint is ok.   I've never seen this before - usually it's a few s slow.
> The time *displayed* on the phone might not reflect the time from the network.
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