[at-l] camera

Tom Fort tom at tjfort.net
Thu Jun 17 10:39:40 CDT 2010

This has to do with the fact all cell carriers / cell phones are not 
created equal.   therefore they require unique equipment which must be 
individually placed.   Granted if there was a national standard for all 
cell phones, you could have a single system. 

there are different frequencies, and, different data protocols.  EVDO 
vs CDMA is the biggest example.  that's why iPhones only work on AT&T 
and not Verizon.  Kinda sux in my opinion. 


Quoting Jim Bullard :

       On Thu, Jun 17, 2010 at 10:57 AM, David Addleton  wrote:

        AT&T rarely has
service along the southern portions of the AT I generally hike. 

Can someone explain to me why there isn't one backbone for cell 
service? Why does one carrier have more coverage than others? If they 
all cover a particular area does that mean there is a separate set of 
towers for each service provider in that area? If so wouldn't it be a 
lot more efficient to have one set that they all shared, sort of like 
the electric grid? Inquiring minds want to know. 

Jim Bullard


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