Cellphone good or bad

Essay specific features

 

Issue:

Miscellaneous

 

Written by:

Joe S

 

Date added:

May 7, 2013

 

Level:

University

 

Grade:

B

 

No of pages / words:

5 / 1384

 

Was viewed:

8687 times

 

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Essay content:

Despite the small number of radio frequencies set aside the research showed so much promise and potential However when one the enormous commercial opportunity was recognized AT&T could not maintain there monopoly on the market. How cellular telephones work is really very simple, they use low-energy FM radio waves to transmit voice to the nearest antenna site connected with the local telephone network...
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The call goes through either a regular telephone line, or by radio signal to another cell telephone, depending on the service. Wireless technology uses individual radio frequencies over and over by dividing service areas into different geographic zones. These zones are called "cells." Cells can be as small as Madison Square Garden or as large as New York City...
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