T-Mobile?

They also have great service outside the United States. I used my T-Moblie phone in Portugal and Spain last May and the service was perfect.

 

Thanks coalminer. So I suppose the 1800 band in Europe can't pick up our "1900" GSM. Well that seems dumb, I guess their 1800 doesn't go that high? I realize the GSM would have to be in the A band, but still u'd think they could in some circumstances. Oh well. 1900 is a big band!

 

Well, every block is divided into 2 parts, for example, the A block is defined as 1850-1865mhz and 1930-1945mhz. Anyone have an idea how it is broken down in Europe?

 

GSM 1900 is often referred to as American GSM because the rest of the world is either GSM 1800/900. I think there are a couple of African countries that may start GSM 1900 in the future.

 

Well, yes Coalminer, every block has a phone transmit and base transmit sub-blocks which are 15Mhz each for A, B and C PCS blocks. Airbus, the 1900Mhz band starts at 1850Mhz to 1910Mhz used for phones to transmit and 1930Mhz to 1990Mhz for the base stations to transmit. It's a total of 120Mhz. 1900Mhz is just a name for the band, but the name is not intended to imply that it begins at 1900Mhz. Look at the link below for more details:

http://www.privateline.com/PCS/CellPCSchart.html

 

If i'm correct that happeend to Sprint when they switched from GSM to CDMA.. This was before they were known as Sprint PCS.. They did not adpat the PCS part till they converted to CDMA. And a Disadvantage that GSM has that CDMA does have. Is that the 3G version of GSM will have to give up capacity to offer the high spped data.. CDMA doesn't loose capacity when accessing Data. At east thats what I've heard in many forums.

 

In GSM, you give up time slots more quickly when using data and eventually more 200Khz channels have to be used to accomodate other users. In CDMA, the channel pollution increases more quickly when using data, eventually requiring to use another 1.25Mhz channel to accomodate extra users. Either way, the effect is the same when many users hop online because eventually more spectrum has to be used than if they were just using voice.