The Cell Phone Evolution
Table of Contents
A NEW WAY TO COMMUNICATE
PRESENT CELL PHONES
FUTURE CELL PHONES……………………………….………………………………….……7
The Cell Phone Evolution
Over a century ago, Alexander Graham Bell changed the way people communicated with each other. Back when he invented the phone in 1876, no one could imagine that over the next century, his invention would change the way societies interact and communicate with each other. Since the invention of the telephone, the process of communication has evolved.
According to the website Affordablephones.net, before the invention of the telephone, society had only the telegraph as a means of communicating over a distance (http://affordablephones.net/HistoryTelephone.htm). Since its invention, the phone has gone from only a few families owning one, to entire families owning several. Research in communication shows that throughout the years to the 1920’s mobile radio communications was used to send messages thru Morse code (http://www.unc.edu/~chelsea5/photoessay/). In 1921, Detroit Police used one-way mobile radios to communicate with each other. A message sent, via Morse code, to the receiver located in the police car. Patrol officers would stop at a wire-line telephone station to respond to the page (http://www.unc.edu/~chelsea5/photoessay/).
In 1924, Bell Laboratories made a major step towards the progress of communication by inventing the first mobile, voice-based, two-way radio telephone (http://www.unc.edu/~chelsea5/photoessay/). Society continued to utilize radiotelephone throughout the 1930s. The military continued to perform radio research for military purposes when World War II began (http://www.unc.edu/~chelsea5/photoessay/). It was not until 1943 that Dan Moble, and employee for Motorola designed the first portable FM two-way radio, the “Walkie-Talkie”, a handheld radio that was crucial for communication during WWII (http://www.unc.edu/~chelsea5/photoessay/). It was not until 1947 that another Bell Laboratory employee, D. H. Ring had the idea of cellular telephone service (http://www.unc.edu/~chelsea5/photoessay/). Ring’s idea was to divide large service areas into smaller cells across a hexagonal grid (www.historyofcellphones.net). His idea would give each cell its own transmitter instead of one transmitter providing service for one large area. Ring understood that frequency bands would be used more competently used in a small circle instead of a large one. Due to technology limits, the cellular grid network was before its time.
A NEW WAY TO COMMUNICATE
It was not until the 1960s that the cell phones we see now were developed (www.historyofcellphones.net). Although the technology of the mobile phone was available, it had its’ limitations. The problem then was the user limitation to an area known as cell areas (www.historyofcellphones.net). The cell areas were contained to a small space. When a person went outside of the small space, the call would end. Once again, a Bell Lab employee, Amos Joel, discovered a “handoff system” to combat the latest issue. With the new system, calls could continue past set areas, allowing users to become mobile.
Over the years, cell technology continued to develop. 1971, was the year that ATT asked the Federal Communications Committee, (FCC), to allow cellular service (www.historyofcellphones.net). The FCC spent a decade deciding whether to allow the request. The problem was that AT&T wanted to set up wireless service and the phone division, also wanted to provide wireless service. Motorola also wanted to provide wireless service. (http://www.msnbc.msn.com/id/7432915/). In 1982, AT&T requested the FCC allow public cellular service (www.historyofcellphones.net). Radio frequencies 824 to 894 MHZ Band were dedicated for public cellular use. From 1982 to 1990, cell phones operated on analog services....
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