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There are two main types of Cellular phone com usage, that being CMDA and GSM.
GSM operates, typically in a range of 850mhz, 900mhz, 1800 and 1900mhz. In parts of Europe it also uses 2100mhz. Older GMS specs can go as low as 380mhz for uplink and downlink and the channel will vary.
CDMA operates at usually at 800mhz or 1900mhz. Some of the 4g WiMax signals can run as high as 2.7ghz. That however is used for data, not for voice mode.
Again, different variations of this will run at other speeds but those are the most common ones.
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list out the operating frequency of mobiles in the UK list out the operating frequency of mobiles in the UK
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When a cellphone is turned on what energy are formed?
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300MHz
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The AT89S52 microcontroller operates at a frequency of 12 MHz.
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