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Cellular forums Home > Archive > T-Mobile cellular service > October 2005 > What is the difference between GSM 850/900?
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| Author |
What is the difference between GSM 850/900?
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| Ray Muforosky 2005-09-19, 5:48 pm |
| Some triband phones have 850/1800/1900 and some have 900/1800/1900
which region uses 850 and will 850 work in 900 regions? What is the
difference between the two.
Ray
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| Cyrus Afzali 2005-09-19, 11:48 pm |
| On 19 Sep 2005 13:12:12 -0700, "Ray Muforosky" <izombe@yahoo.com>
wrote:
>Some triband phones have 850/1800/1900 and some have 900/1800/1900
>which region uses 850 and will 850 work in 900 regions? What is the
>difference between the two.
>
850 mHz is used in areas that were previously TDMA and overlaid to
accommodate GSM. It is an "animal" specific to the U.S. only and has
no relationship to the 900 mHz frequency used abroad. IOW, you need a
"quad-band" phone, not a triband phone to use every frequency
applicable to both U.S. and international GSM systems.
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| dmitri 2005-09-19, 11:48 pm |
| And, not all carreirs provide 850 coverage. For example, I do no think
T-Mobile does. Finally, there are two types of triband: 850/1800/1900 (with
850 and 1900 for the US) and 900/1800/1900 (with 900 and 1800 for abroad).
Dmitri
"Cyrus Afzali" <pnsmnyv@lnubb.pbz> wrote in message
news:a69ui1pmt0r226q
u81qp6q3pskplon30ma@
4ax.com...
> On 19 Sep 2005 13:12:12 -0700, "Ray Muforosky" <izombe@yahoo.com>
> wrote:
>
> 850 mHz is used in areas that were previously TDMA and overlaid to
> accommodate GSM. It is an "animal" specific to the U.S. only and has
> no relationship to the 900 mHz frequency used abroad. IOW, you need a
> "quad-band" phone, not a triband phone to use every frequency
> applicable to both U.S. and international GSM systems.
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| Cyrus Afzali 2005-09-20, 5:48 pm |
| On Mon, 19 Sep 2005 20:53:22 -0500, "dmitri" <dk2000@comcast.net>
wrote:
>And, not all carreirs provide 850 coverage. For example, I do no think
>T-Mobile does. Finally, there are two types of triband: 850/1800/1900 (with
>850 and 1900 for the US) and 900/1800/1900 (with 900 and 1800 for abroad).
>
>Dmitri
This is not entirely correct. A tri-band phone is one with
900/1800/1900. The 850 band is a U.S. invention only, so if you have a
world phone that includes it, it would be useless without also having
900/1800 and 1900.
The largest GSM provider in America, Cingular, has tons of 850
coverage, although TM users -- even those with compatible devices --
can't roam on the vast majority of it.
>
>
>
>"Cyrus Afzali" <pnsmnyv@lnubb.pbz> wrote in message
> news:a69ui1pmt0r226q
u81qp6q3pskplon30ma@
4ax.com...
>
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| Joseph 2005-09-20, 5:48 pm |
| On Mon, 19 Sep 2005 16:52:22 -0400, Cyrus Afzali <pnsmnyv@lnubb.pbz>
wrote:
>850 mHz is used in areas that were previously TDMA and overlaid to
>accommodate GSM. It is an "animal" specific to the U.S. only
Not true. 850 is used in Canada, central and South America as well.
- -
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| Ray Muforosky 2005-09-20, 5:48 pm |
| What do the use in Africa (South Africa, Egypt, Nigeria, Ghana ) 850,
900 or 1800 ?
Ray
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| Ray Muforosky 2005-09-20, 5:48 pm |
| Thanks BruceR and the rest of the guys for you GSM 101.
| |
| Cyrus Afzali 2005-09-20, 11:48 pm |
| On Tue, 20 Sep 2005 10:49:57 -0700, Joseph <JoeOfSeattle@yahoo.com>
wrote:
>On Mon, 19 Sep 2005 16:52:22 -0400, Cyrus Afzali <pnsmnyv@lnubb.pbz>
>wrote:
>
>
>Not true. 850 is used in Canada, central and South America as well.
>
Interestingly, however, you weren't able to find world phones with 850
mHz in them until it became a leading frequency in the U.S. That seems
odd if it is prevalent in other areas of the world.
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| Joseph 2005-09-21, 2:48 am |
| On 20 Sep 2005 11:35:25 -0700, "Ray Muforosky" <izombe@yahoo.com>
wrote:
>What do the use in Africa (South Africa, Egypt, Nigeria, Ghana ) 850,
>900 or 1800 ?
Mostly 900 with some 1800. Go to http://www.gsmworld.com and check
which countries you're interested in and then check the networks in
that country.
- -
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| Joseph 2005-09-21, 2:48 am |
| On Tue, 20 Sep 2005 16:54:27 -0400, Cyrus Afzali <pnsmnyv@lnubb.pbz>
wrote:
>On Tue, 20 Sep 2005 10:49:57 -0700, Joseph <JoeOfSeattle@yahoo.com>
>wrote:
>
>Interestingly, however, you weren't able to find world phones with 850
>mHz in them until it became a leading frequency in the U.S. That seems
>odd if it is prevalent in other areas of the world.
There was only 850 in other countries when they overlayed their TDMA
systems with GSM. GSM at 850 has only been around in any major sort
of way since 2002. GSM at 1900 has been around since at least the mid
90s.
- -
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| John S. 2005-10-04, 11:48 pm |
| 900/1800
"Ray Muforosky" <izombe@yahoo.com> wrote in message
news:1127241325.213203.126370@g47g2000cwa.googlegroups.com...
> What do the use in Africa (South Africa, Egypt, Nigeria, Ghana ) 850,
> 900 or 1800 ?
>
> Ray
>
| |
| John S. 2005-10-04, 11:48 pm |
|
"Cyrus Afzali" <pnsmnyv@lnubb.pbz> wrote in message
news:emt0j19qq73mi7e
c8p4o3fbekaap1v2ji9@
4ax.com...
> Interestingly, however, you weren't able to find world phones with 850
> mHz in them until it became a leading frequency in the U.S. That seems
> odd if it is prevalent in other areas of the world.
Because the official "Band" for the USA is 900MHz, not 850MHz. So you will
see 800/1900 listedin international listings for the USA.
850 is a STUPID marketing ploy to try to make customers believe that there
is a great difference between the older technologies and the newer GSM.
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| Joseph 2005-10-04, 11:48 pm |
| On Tue, 04 Oct 2005 21:45:42 GMT, "John S."
<john@mocha-n-micro-chips.com> wrote:
>Because the official "Band" for the USA is 900MHz, not 850MHz.
You don't have a clue. ABSOLUTELY THERE IS NO 900 Mhz networks in
North America excepting Cuba. GSM in North America is either 850 (or
800 if you prefer) and 1900.
- -
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| John S. 2005-10-05, 5:48 pm |
|
OOPS..... shoulds say 800MHz below
Sorry people
"John S." <john@mocha-n-micro-chips.com> wrote in message
news:aKC0f.8564$QE1.5931@newsread2.news.atl.earthlink.net...
>
> "Cyrus Afzali" <pnsmnyv@lnubb.pbz> wrote in message
> news:emt0j19qq73mi7e
c8p4o3fbekaap1v2ji9@
4ax.com...
>
>
> Because the official "Band" for the USA is 900MHz, not 850MHz. So you will
> see 800/1900 listedin international listings for the USA.
>
> 850 is a STUPID marketing ploy to try to make customers believe that there
> is a great difference between the older technologies and the newer GSM.
>
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| John S. 2005-10-05, 5:48 pm |
| Exactly, I saw my typo a moment ago and sent a "correction" message.
And I do have a clue.
"Joseph" <JoeOfSeattle@yahoo.com> wrote in message
news:6fc6k1ti0hltn5q
q3dimbnk98fj8c7t0os@
4ax.com...
> On Tue, 04 Oct 2005 21:45:42 GMT, "John S."
> <john@mocha-n-micro-chips.com> wrote:
>
>
> You don't have a clue. ABSOLUTELY THERE IS NO 900 Mhz networks in
> North America excepting Cuba. GSM in North America is either 850 (or
> 800 if you prefer) and 1900.
>
> - -
>
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