Shortcut GSM / CDMA / GB / MHz

  
               GSM/CDMA/TDMA/UMTS
           

















* GSM : Global System for Mobile communications

a) GSM > (900MHz) : Airtel, Bsnl, Idea.

b) DCS > (1800MHz) : Reliance, Vodafone, Docomo, Aircel, Uninor etc.....


c) PCS > (1900Mhz) : (USA)

* UMTS : Universal Mobile Telecommunications System :

* WCDMA : Wideband Code Division Multiple Access : (2100MHz)

* HSDPA : High Speed Downlink Packet Access :

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* CDMA : Code Division Multiple Access

a) CDMA > (800MHz) : Reliance, Tata, Virgin, Mts.





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* TDMA : Time Division Multiple Access

a) us China, Canada

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* Byte : 1 Byte = 8 Bits

* Kilobyte (KB) : 1 KB = 8,192 Bits
  1 kB = 1,024 Bytes

* Megabyte (MB) 1MB =1024 KB

* Gigabyte (GB) 1GB = 1024 MB

* Terabyte (TB) 1TB = 1024 GB

* Petabyte (PB) 1PB = 1024 TB

* Exabyte (EB) 1EB = 1024 PB

* Zettabyte (ZB) 1ZB = 1024 EB

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Table of Contents:

Frequency	Band
10 kHz to 30 kHz	Very Low Frequency (VLF)
30 kHz to 300 kHz	Low Frequency (LF)
300 kHz to 3 MHz	Medium Frequency (MF)
3 MHz to 30 MHz	High Frequency (HF)
30 MHz to 144 MHz 144 MHz to 174 MHz 174 MHz to 328.6 MHz	Very High Frequency (VHF)
328.6 MHz to 450 MHz 450 MHz to 470 MHz 470 MHz to 806 MHz 806 MHz to 960 MHz 960 MHz to 2.3 GHz 2.3 GHz to 2.9 GHz	Ultra High Frequency (UHF)
2.9 GHz to 30 GHz	Super High Frequency (SHF)
30 GHz and above	Extremely High Frequency (EHF)
Other charts of the radio spectrum
Cable TV channel frequencies
Letter designations of microwave bands
Satellite to L-band conversion
Frequency coordination
Other communications resources on the net

* KHz : KiloHertz

* MHz : MegaHertz

* GHz : GigaHertz

* THz : TeraHertz

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