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December 24th, 2006 03:22 AM How does a Mobile Phone Work?
Wireless telephones / Cell Phones / Mobile Phones are hand-held
phones with built-in antennas, often called cell, mobile, or PCS
phones. These phones are popular with callers because they can
be carried easily from place to place. Wireless telephones are
two-way radios. When you talk into a wireless telephone, it
picks up your voice and converts the sound to radiofrequency
energy (or radio waves). The radio waves travel through the air
until they reach a receiver at a nearby base station. The base
station then sends your call through the telephone network until
it reaches the person you are calling. When you receive a call
on your wireless telephone, the message travels through the
telephone network until it reaches a base station close to your
wireless phone. Then the base station sends out radio waves that
are detected by a receiver in your telephone, where the signals
are changed back into