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Cellphone Good Or Bad

There every where and their various tones can be heard ringing out from the blenchers of a little league game to the pin drop silence of a board meeting. What are these seemingly mobile music boxes you ask? Cellular telephones! Once only for the social elite the cell telephone have now become a common commodity. This little essentiality mobile personal communication device has transformed American the face of society. No long confined to the length of a cord, telephones are now able to go just about everywhere. With ever improving technological advancements in micro chip hardware the big bulky bag telephones of old are being traded in for sleek compact telephones what can fit in the palm of a child's hand. Now there is no such time as long distance if you're on a cell telephone.

Wireless communication as we know it today had it began in radio; actually a cellular telephone is a type of two-way radio. It wasn't until 1947 when AT&T propositioned the Federal Communications Committee (FCC) to allocate a radio frequencies did a mobile network become feasible. The research began with crude car telephone within the Chicago area. 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. 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. Typically, there are more cells in cities than in rural areas simply because...