Mobile Phones – GSM Bandwidth Frequnecy

GSM based mobile phone are intentionally acceptable around the world. GSM is standard in which, mobile network is divided into availble cells network. This is also called cellular network, because it is divided into cells.

With GSM technology, roaming term is introduced. Roaming is some extra charge taken by mobile network for connectivity of mobile network to its home location based network. Under GSM standard, there are fourteen band with uplink frq., downlink frq. Along with channel number and band.

Based on different band, GSM-900, GSM 1900 are widely used in Europe, Middle East, Africa, Oceania and most of Asia. South and north America uses GSM-850, GSM-1800 mostly. GSM-900 and GSM-1900 are also used.

GSM 900 uses GSM 1800 uses 890-915 Mhz to send information from mobile staion to base station and 935-960 MHz for other direction, providing 124 RF channels speed at 200Khz.

In some countries, GSM is extended called with E-GSM. Extend-GSM uses 880-915 MHz and 925-960(downlink), adding 50 channels to GSM 900 brand.

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