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Some Information About GSM mobile bands

All over the world four different Radiomobile service. As a result of this, 850 MHz
frequency used for GSM mobile service.network has a bigger and more penetrating
GSM is the most popularreach then the 900, 1800 and 1900 MHz
standard for mobile phone service in thenetwork. Apart from that, the difference
world. In more then 200 countries in thebetween the 850 MHz and the 900 MHz network
world people using GSM mobile service.hardly noticeable. Lower frequency services
However, different countries use differentare good in big building because of their
GSM Radio frequency for their mobilemore penetrating reach. A disadvantage of a
networks. Worldwide four frequencies arelow  frequency  network  is its low capacity.
widely used for GSM mobile services. They are
850MHz, 900 MHz, 1800MHz and 1900MHzAlthough900 MHz networks are quite old networks. Like
850, 900 and 1800, 1900 frequency are very850 MHz, 900MHz also has a bigger and more
close, normally mobile phones can't receivepenetrating reach then the 1800 and 1900 MHz
more then one frequency at-a-time, a phonenetwork.
that works with one band, can not receive
signals of other bands. So if you want your1800 MHz is a relatively high frequency for
mobile to work with multiple bands, you needcellular phones. Because of this, 1800 MHz
to have multi band mobiles. Based on yournetworks have a smaller and less penetrating
need, you can go for dual, tri or quad bandreach compare to 900 and 850 MHz networks. By
mobile  set.this the reach in big buildings is low. An
advantage of 1800 MHz networks is that the
As a whole, both high and low frequency bandscapacity is bigger. This band is idle for
have some advantage and disadvantages. Forcities  where  density  of mobile users high.
high frequency service, the network is less
effected by the influences of the weather.1900 MHz available only in North America,
And you can have more clear andsome networks in Canada and South Africa.
un-interrupted connection. Another advantageThis band is not available in Europe or Asia.
of a high frequency is that you only need1900 MHz quite similar to 1800MHz. Because of
small antenna. Main disadvantage of higherhigh frequency 1900 MHz band network isn't
frequency band is its lower reach. Theseinterrupted by the influences of the weather
bands are good for cities where density ofand you can have a crystal clear connection
mobile users is more. Where as, lowermost of the times. For this network, GSM
frequency bands are good for rural areasprovider needs to use more mini antennas. An
because  of  their  large  area  reach.advantage of 1900 MHz networks is that the
capacity is bigger.
850 MHz is the lowest frequency used for GSM



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