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| Wireless cell phones
can be compared to two-way radios. When you talk
into a cell phone, it picks up your voice and
transmits the sound to radio frequency energy. 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. |
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| When you get a call on your
wireless cell phone, the message travels through the
telephone network until it reaches a base station
close to your cell 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 the sound of a voice. Some of the
base stations are made to look like real trees. |
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