Timeline cell phone

8/8/2019 Timeline cell phone

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Michael FaradayMichael Faradaywas a talented chemist, who

begins researching thepossibility that space can

conduct electricity.

Dr. Mahlon LoomisDr. Mahlon LoomisVirginia Dentist/ scientist,develops a method of

communication through theearths atmosphere by using an

electrical conductor.

Drawing done by MahlonLoomis, showing 14 miles

between mountains.

From Library of CongressArchives.


4/11

The transatlantic telegraph cablewas the first cable used for

telegraph communications laidacross the floor of the Atlantic

Ocean. It crossed from theTelegraph Field.

A major advancement incommunication nonetheless.

The police Department inDetroit, Mich, begins installing

mobile radios, operating around

2 MHz, in their squad cars. They

encounter many problems such

as overcrowding on the channels

and terrible interference.


5/11

The U.S Congress passes thefederal Communications

commission. They decide who

gets to use certain radiofrequencies. Most channelswere reserved for emergency

use and the government.Act of 1934, with a goal of

universal service at reasonablecharges as its key tenet. The

FCC was formed.

FM Police RadioCommunications begin in

Hartford, CT and themobile radios are able tooperate at 30 to 40MHz

and become much morecommon between police

departments, and thewealthy.

Several private companies andorganizations begin using these same

radios for personal gain

FirstMobil -r dio-t l one service is

established in St.Louis, Miss.The system is comprised of6 channels and add up to

150MHx. The project isapproved by the FCC, but

due to massive

interference, theequipment barely works


6/11

AT&T comes outwith the first- ra io-

car-phones

that can be usedonly on the highway

between NY andBoston; they wereknown as push- to-

talk phones.AR&T declares the

project a failure.

The First real carphones, not car radios,

come into play acrossthe United States.

Although, the system isstill using push-to-talk

phones, it is an

improved version thatactually works.

The self-dialing capabilityis now upgraded to 4 0

MHz and becomesstandard in the U.S. Thisnew service is known as(IMTS) improved mobile

telephone service.


7/11

AT&T is the firstcompany topropose a

modern-daymobile- phonesystem to the

FCC.

r . artin Cooperinvents the firstpersonal handset hile

orkin for otorola.e takes his ne

invention, the otorolayna-Tac., to e York

City and sho s it to thep blic. e is creditedith bein the first

person to make a callon a portable mobile -

phone.

AT&T adapts its o n

cell lar plan for the cityof Chica o, b t the FCC

is still neasy abo tp ttin the plan into

action. They haveconcerns abo t its

s ccess.


8/11

Finally cell phone

testing is permittedby the FCC in

Chicago. The BellTelephone

Company gets thelicense; they are ina partnership with

AT&T which is ageneral effort to

battle the stubbornFCC.

One of the most

important years in cellphone evolution. ThecellularTechnology

Industry. Association iscreated and helps tomake the industry into

an empire.

In this year it becameavailable to public.


9/11

Bellsouth announcesthat it is leaving thepay phone business

because is toomuch competitionfrom cell phones.


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11/11

Bibliogra y

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http:// .corp.att.com/history/milesto e_1946.html

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Timeline cell phone