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Cellular Phone Forum / Providers / Cingular / March 2005800 or 1900 Mhz in Southern California
Does Cingular use 800 or 1900 Mhz is Southern California? >Does Cingular use 800 or 1900 Mhz is Southern California? Pretty easy to look it up yourself - http://www.wirelessadvisor.com/ All you need is the zip code. Cingular used to be 1900MHz only in Southern California, but since the merger with AT&T, they now have both. > Does Cingular use 800 or 1900 Mhz is Southern California? What area of SoCal uses what frequency? What is the frequency in Southern Orange County? > Cingular used to be 1900MHz only in Southern California, but since the > merger with AT&T, they now have both. > >> Does Cingular use 800 or 1900 Mhz is Southern California? I don't know about Southern Orange County. But in San Diego they have both 850 and 1900MHz. The best way to test is to use a 'foreign' sim card that allows for network selection. Then test with both a 850mhz phone and a 1900-only phone. In San Diego, I see 2 Cingular selections with the 850MHz phone, buy i see only 1 Cingular selection with the 1900 only phone. > What area of SoCal uses what frequency? What is the frequency in Southern > Orange County? [quoted text clipped - 3 lines] >> >>> Does Cingular use 800 or 1900 Mhz is Southern California? >buy i see >only 1 Cingular selection with the 1900 only phone. Buy? What are you buying? - - - - - - - - - - - - - - - - - - - - - - - - - - > I don't know about Southern Orange County. But in San Diego they have both > 850 and 1900MHz. > > The best way to test is to use a 'foreign' sim card that allows for network > selection. Then test with both a 850mhz phone and a 1900-only phone. In > San Diego, I see 2 Cingular selections with the 850MHz phone, buy i see > only 1 Cingular selection with the 1900 only phone. I have heard both that AT&T has GSM on 850 and does not. What I can tell you is that on my 1900 phone there are 2 available signals Cingular orange and Cingular blue. AT&T definetely has TDMA on their 850 but not convinced there is GSM overlayed on 850. Any Cingular or AT&T Engineers care to confirm? they do here where i live in washington.. cingular was only 1900 but since the merge i can roam on both 1900 at&t and 850 at&t. i have 3 towers to choose from in the network list. > > I don't know about Southern Orange County. But in San Diego they > have both [quoted text clipped - 13 lines] > 850 but not convinced there is GSM overlayed on 850. Any Cingular or > AT&T Engineers care to confirm? If both 850 and 1900 (Cingular and/or ATT) are available to a phone, which one will it pick? Does it favor one over the other? I am curious about this. Steve > they do here where i live in washington.. > cingular was only 1900 but since the merge i can roam on both 1900 at&t > and > 850 at&t. > i have 3 towers to choose from in the network list. > If both 850 and 1900 (Cingular and/or ATT) are available to a phone, which > one will it pick? Does it favor one over the other? I am curious about [quoted text clipped - 3 lines] > >> [quoted text muted] I've not seen anything published about that, but assuming ENS, I think it tries to go with the best signal first, and there is probably backend load balancing that may make an impact. >> If both 850 and 1900 (Cingular and/or ATT) are available to a phone, which >> one will it pick? Does it favor one over the other? I am curious about >> this. It will pick the Home network as long as there is a Home network signal; otherwise it will roam on the other network. >I've not seen anything published about that, but assuming ENS, I think it >tries to go with the best signal first, and there is probably backend load >balancing that may make an impact. ENS is only enabling configuration by Cingular of the Home network; i.e., it doesn't automatically select the better network.  SignatureBest regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES: John Navas <http://navasgrp.home.att.net/#Cingular> >i have 3 towers to choose from in the network list. You can choose towers! Amazing. How do you choose a tower to handle your call? And the towers are listed too! How do they list which tower you use? - - - - - - - - - - - - - - - - - - - - - - - - - - yes I have flashed a v600 that allows me to choose what tower im on. it doesn't really let me stay on the tower but you can see it in the preferred network list, they are displayed by the tower ids, ie 310-180. you can select what tower to register on but unfortunately the sim card takes over and moves it back if "home" is available.. even tho it has a weaker signal :( > >i have 3 towers to choose from in the network list. > [quoted text clipped - 4 lines] > > - - - - - - - - - - - - - - - - - - - - - - - - - - >Does Cingular use 800 or 1900 Mhz is Southern California? With the acquisition of AT&T's network, Cingular now uses both 850 and 1900 MHz in SoCal. Using field test mode on my Moto V551 (see www.howardforums.com for info on how to do this), I can tell that when I'm on the Cingular Blue network (formerly AT&T) I'm on an 850 MHz channel, and when I'm on the Cingular Orange network (the original Cingular) I'm on 1900 MHz. The phone switches between the two to get the best signal, but where I live (West LA) it tends to prefer the Blue network. |
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