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Wireless History
Wireless Technologies have been around for a surprising duration of time. In 1921, the Detroit Police Department began using simple wireless radios as means for communication. Development of the wireless radio was a decelerated process throughout the 30's and 40's. It was not until the late 40's that the crude concept of cellular phone came to light. The developers soon emerged into the problem that radio frequency's filled up quickly with voice traffic and interference. From extensive research it was discovered that service areas could be
divided into small "cells". On these "cells" the radio frequencies could be reused. Thus increasing the calling capacity. This would eventually lead to the cellular boom. However, it wasn't until the Federal Communications Commission (FCC) extended the allotted band of radio frequencies in 1969 that the Improved Mobile Telephone System (IMTS) was conceived. Many set backs detained development along the way. It wasn't until 1978 that Bell Telephone tested the first mobile phones on two thousand customers in Chicago, Illinois. From this point on, the analog system called Advanced Mobile Phone Service (AMPS) quickly evolved. Eventually finding it's way to the operating speeds of 800MHz, and from there on excelling rapidly to radio frequencies operating
at 1900MHz. Once the 800MHz and 1900MHz spectrums were established and numerous digital systems were in place, many advanced features such as voice mail, fax, paging and SMS (Short Messaging Service) quickly became available to cellular phone users. Cellular phone can now also be used as wireless modems for the Internet connection from a laptop while the user is on the go. These advanced features and capabilities have paved the road for the eventual direct connection between the wireless world and the World Wide Web.
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