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GSM booster.

Discussion in 'Electronic Basics' started by [email protected], Sep 13, 2005.

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  1. Guest

    Hi
    I am looking towards some information that can help me boost 900/1800
    MHz range GSM signals.

    I was specifically thinking in the directions of constructing an
    antenna to achieve this. I have a very terrible GSM signal strength in
    the area that I live. I need something to boost the signal strength
    indoors.

    I am fairly new to this stuff, I could think of two ways of doing this.
    Using some kind of signal booster that will increase the signal
    strength and transmit it indoors, or using a signal reflector.

    I tried googling for some information, but could not find anything
    concrete.

    Please point towards some tutorials/literature on this topic that will
    help in clearing up my concepts and eventually helping me resolve my
    problem :)
     
  2. Mark VB

    Mark VB Guest

    But with such an antenna to boost the signal strength indoors... shall
    your GSM be able to communicate in the other direction ?



    Mark Van Borm
     
  3. Guest

    Ah !
    Yes so we could use another pair of receiver transmitter :)

    Hmm, I understand that will create a lot of complications. I think it
    must not be so simple, otherwise the market would have been flooded
    with such options.

    Chucking the idea for now.
     
  4. Doug McLaren

    Doug McLaren Guest

    | I am looking towards some information that can help me boost 900/1800
    | MHz range GSM signals.
    |
    | I was specifically thinking in the directions of constructing an
    | antenna to achieve this. I have a very terrible GSM signal strength in
    | the area that I live. I need something to boost the signal strength
    | indoors.

    If you know the approximate wavelengths of the frequencies involved
    (and it seems you do, though you've mentioned two bands, not one) you
    could make a highly directional antenna for that frequency and point
    it directly at the nearest tower outside, then run coax to an
    appropriate dipole or two (because you want the stuff inside to not be
    very directional) inside your house. No amplifiers needed -- it'll
    all be completely passive.

    Though of course at 900 or 1800 MHz, coax is very lossy, so you'll
    need good coax, and will want to keep it short. On the bright side, a
    high gain 900 or especially 1800 MHz antenna isn't hard to make and
    isn't very big. Google for `yagi antenna', though a yagi is just one
    of several types of antenna that could work.

    I don't know much about the specifics of GSM phones, but if they stick
    to one band, and transmit and receive on the same band, this would
    work well. If they bounce between two bands, you'd need two sets of
    antennas if you can't get by with boosting just one.

    Of course, I've never done this. It ought to work though.
     
  5. Jasen Betts

    Jasen Betts Guest

    some car kits provide an external antenna.

    If you want to walk round with the phone while talking that's another matter
    entirely.

    Bye.
    Jasen
     
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