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2007-02-23 08:02:11 · 5 answers · asked by joselin 1 in Consumer Electronics Cell Phones & Plans

5 answers

Martin Cooper in 1973 made the first cellular telephone, from the street outside his office where the base station (which we now call cell towers) was located. He called AT&T Labs, who were his company's main competition, to flaunt the invention at them.

Before that, there were other mobile phones that didn't use cellular networks but just used simple radio signals and could only handle a few people at a time.

2007-02-23 08:15:04 · answer #1 · answered by romulusnr 5 · 0 0

Inventors: Martin Cooper, Richard W. Dronsuth, ; Albert J. Mikulski, Charles N. Lynk Jr., James J. Mikulski, John F. Mitchell, Roy A. Richardson, John H. Sangster


The basic concept of cellular phones began in 1947, when researchers looked at crude mobile (car) phones and realized that by using small cells (range of service area) with frequency reuse they could increase the traffic capacity of mobile phones substantially. However at that time, the technology to do so was nonexistent.

Anything to do with broadcasting and sending a radio or television message out over the airwaves comes under Federal Communications Commission (FCC) regulation. A cell phone is a type of two-way radio. In 1947, AT&T proposed that the FCC allocate a large number of radio-spectrum frequencies so that widespread mobile telephone service would become feasible and AT&T would have a incentive to research the new technology. We can partially blame the FCC for the gap between the initial concept of cellular service and its availability to the public. The FCC decided to limit the amount of frequencies available in 1947, the limits made only twenty-three phone conversations possible simultaneously in the same service area - not a market incentive for research.

The FCC reconsidered its position in 1968, stating "if the technology to build a better mobile service works, we will increase the frequencies allocation, freeing the airwaves for more mobile phones." AT&T and Bell Labs proposed a cellular system to the FCC of many small, low-powered, broadcast towers, each covering a 'cell' a few miles in radius and collectively covering a larger area. Each tower would use only a few of the total frequencies allocated to the system. As the phones traveled across the area, calls would be passed from tower to tower.

2007-02-23 16:07:08 · answer #2 · answered by Anonymous · 1 0

Martin Cooper of motorola is considered the inventor of cellphone and the first to make a call on one.
the technology was available on teo-way radio systems sold by Motorola for private networks

2007-02-23 16:08:04 · answer #3 · answered by T 1 · 0 0

Norman Bates

2007-02-23 16:06:42 · answer #4 · answered by Anonymous · 0 1

Mr mobile of t-mobile did.

2007-02-23 16:09:09 · answer #5 · answered by Anonymous · 0 0

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