Tuesday, March 4, 2014

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Mobile Phone Background Biography 

Source:- Google.com.pk
Today's communications industry would not be what it is without the contributions made by Richard H. Frenkiel and Joel S. Engel. The big breakthrough came when AT&T Labs researchers Frenkiel and Engel divided wireless communications into a series of cells, then automatically switched callers as they moved so that each cell could be reused. This led to the development of cellular phones and made today’s mobile communications possible. THE STORY
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Invention: mobile telephone
Photo courtesy Motorola
Function: noun / mo·bile tele·phone
Definition: A mobile radiotelephone, often in an automobile, that uses a network of short-range transmitters located in overlapping cells throughout a region, with a central station making connections to regular telephone lines. Also called cellular telephone
Inventor: Joel Engel and Richard Frenkiel
Engel and Frenkiel photo courtesy National Medal of Technology
Criteria: First practical cellular telephone system.
Birth: Richard Frenkiel, March 4, 1943 in Brooklyn, New York
Joel Engel, February 4, 1936 in New York City
Nationality: American
Milestones:
1921 The Detroit Police Department, began experimentation with one-way vehicular mobile service. 
1928 Detroit Police commenced regular one-way radio communication with all its patrol cars. 
1933 Bayonne, NJ Police Department initiated regular two-way communications with its patrol cars
1936 Alton Dickieson, H.I. Romnes and D. Mitchell begin design of AT&T's mobile phone system
1940 Connecticut State Police began statewide two-way, on the frequency modulated (FM) 
1941 FM mobile radio became standard throughout the country following the success in Connecticut
1946 A driver in St. Louis, Mo., placed a phone call,it was the first AT&T mobile telephone call. 
1948 wireless telephone service was available in almost 100 cities and highway corridors.
1947 cellular telephone service conceived by D.H. Ring at Bell Labs, but the technology didn't exist
1971 Richard Frenkiel and Joel Engel of AT&T applied computers and electronics to make it work. 
1973 Martin Cooper of Motorola made the first cellphone call to his rival Joe Engel of AT&T Bell Labs
1978 AT&T conducted FCC-authorized field trials in Chicago and Newark, N.J.
1979 the first cellular network was launched in Japan. 
1982 FCC granted commercial licenses to an AT&T subsidiary, Advanced Mobile Phone Service
1983 AMPS was then divided among the local companies as part of the planning for divestiture
1983 Illinois Bell opened the first commercial cellular system in October
CAPs: Joel Engel, Richard Frenkiel, Alton Dickieson, H.I. Romnes, D. Mitchell, D.H. Ring, William (Bill) C. Jakes, Martin Cooper, ARY, mobile phone, mobile telephone, cell phone, cellular phone, cellphone, wireless phone, SIP, history, biography, inventor, invention.
The Story:
Today's communications industry would not be what it is without the contributions made by Richard H. Frenkiel and Joel S. Engel. The big breakthrough came when AT&T Labs researchers Frenkiel and Engel divided wireless communications into a series of cells, then automatically switched callers as they moved so that each cell could be reused. This led to the development of cellular phones and made today’s mobile communications possible.
On June 17, 1946 a driver in St. Louis, Missouri., pulled out a handset from under his car's dashboard, placed a phone call and made history. It was the first mobile telephone call. A team including Alton Dickieson, H.I. Romnesand D. Mitchell from Bell Labs, worked more than a decade to achieve this feat. By 1948, wireless telephone service was available in almost 100 cities and highway corridors. Customers included utilities, truck fleet operators and reporters. However, with only 5,000 customers making 30,000 weekly calls, the service was far from commonplace.

Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys
 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 
Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 

Mobile Phone Background Phone Backgrounds Hd Tumblr Android Pinterest Iphone Quotes For Girls Ios7 for guys 

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