| A cell phone is nothing but a radio, but
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| | phone you can communicate on 1664
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| very high-tech. It is basically like a CB
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| | channels.Lets clarify why this phone is
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| radio or walkie-talkie. But CB radio or
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| | called cell phone or cellular phone. The
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| walkie-talkie is a simplex system, where
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| | whole network area of the provider is
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| at a time a person can talk or listen.
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| | divided into small cells or areas. Each
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| But a cell phone is a duplex device,
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| | area or cell contains an antenna. When a
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| where a person can listen and talk at the
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| | person moves within the network area
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| same time. One frequency is used for
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| | carrying a cell phone, the cell phone
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| talking and another for listening. In CB
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| | keeps contact with the local antenna.
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| radio 40 channels are used. But in cell
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