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  1. #1
    Paul Busby
    Guest
    Isn't it about time SE & obviously other manufacturers apart from Mot
    started producing more quad band GSM phones if much or some of the expansion
    in the Americas is going to be in the old 800MHz band as GSM 850? I presume
    there will also be more 1900MHz coverage as well, depending on carrier
    though. In principle at least, designing in 850 shouldn't be too difficult
    (low pass/band pass filters that don't cut that frequency, RF amps with
    sufficient bandwidth etc). Same IF, so it's just the front end & only ~50MHz
    lower.

    --
    Thank people in advance? Thanking or cursing them afterwards at least gives
    some feedback!





    See More: GSM 850




  2. #2
    Lina & Niall
    Guest

    Re: GSM 850


    "Paul Busby" <[email protected]> skrev i meddelandet
    news:[email protected]
    > Isn't it about time SE & obviously other manufacturers apart from Mot
    > started producing more quad band GSM phones if much or some of the
    > expansion in the Americas is going to be in the old 800MHz band as GSM
    > 850? I presume there will also be more 1900MHz coverage as well, depending
    > on carrier though. In principle at least, designing in 850 shouldn't be
    > too difficult (low pass/band pass filters that don't cut that frequency,
    > RF amps with sufficient bandwidth etc). Same IF, so it's just the front
    > end & only ~50MHz lower.


    Its still a bit of a compromise with antenna design etc. SE quite often
    release two Tri-band models: 850/1800/1900 and 900/1800/1900. I have roamed
    in the US and Canada with a number of 900/1800/1900 phones and got
    reasonable coverage within urban areas, it would be interesting to know how
    much better (if at all) ut would have been with the addition of the 850
    band.

    Anyone had much experience coming from the other direction? I wonder how
    much difference not being able to use GSM900 would make in Europe. Comments
    anyone?






  3. #3
    Hiram Hackenbacker
    Guest

    Re: GSM 850

    Lina & Niall wrote:

    > Anyone had much experience coming from the other direction? I wonder how
    > much difference not being able to use GSM900 would make in Europe. Comments
    > anyone?


    Not having access to GSM900 in parts of France and Spain can be a
    problem - the GSM1800 networks in both Countries have poorer coverage
    than say the two GSM1800 networks in the UK.

    In my experience a dual (900/1800) phone is essential when travelling in
    Europe.



  4. #4
    Stuart Friedman
    Guest

    Re: GSM 850

    Motorola isn't the only quad band phone out there, but there are still a
    relatively small number of quadbands out there. Check out phonescoop.com.
    You can generate a listing of all known quadband phones.

    Stu

    "Hiram Hackenbacker" <[email protected]> wrote in message
    news:[email protected]
    > Lina & Niall wrote:
    >
    >> Anyone had much experience coming from the other direction? I wonder
    >> how much difference not being able to use GSM900 would make in Europe.
    >> Comments anyone?

    >
    > Not having access to GSM900 in parts of France and Spain can be a
    > problem - the GSM1800 networks in both Countries have poorer coverage than
    > say the two GSM1800 networks in the UK.
    >
    > In my experience a dual (900/1800) phone is essential when travelling in
    > Europe.






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