cell phone jammer can act on every signal band - cell phone jammer ...

Maxwell further explained using mathematical formulas Faraday and others, research, and theory of electromagnetic induction to the space. 60 years Hou Hezi confirmed the existence of electromagnetic waves in the experiment. The discovery of electromagnetic waves, the turning point of the cable communications to radio communications, has also become the point of origin of the entire mobile communications. As a scientist said ?the phone is the birth of stepping on the shoulders of telegraph and telephone, no previous efforts, the wireless communications out of the question.? One day in April 1973, a man standing on the streets of New York took out about two large bricks of wireless phones, and began to talk. This phone inventor Martin parked library. The customer makes or receives the call outside the shielding area of? cell phone jammer .
At that time he was Motorola?s engineering and technical personnel. This was the world?s first mobile phone. In 1975, the Federal Communications Commission (FCC) to determine the terrestrial mobile telephone communications and high-capacity cellular mobile phone spectrum. Commercially available for mobile phones ready. In 1979, Japan opened the world?s first cellular mobile telephone network. In 1982, Europe set up a GSM (mobile communications, in particular group). In 1985, commercially available mobile phones in the first in the modern sense was born. It is the power and antenna placed in an example, the weight of three kilograms. Close to the modern shape of the phone, was born in 1987. It means that the cell phone is coming out of the shielding area of cell phone jammer .
Its weight is still about 750 grams, weighs only 60 grams mobile phone compared to, like a big brick. Since then, the ?downsizing? of the phone quickly. In 1991, the phone weighs 250 grams. The fall of 1996 appeared a volume of 100 cubic centimeters, weighs 100 grams mobile phone. After further, smaller, lighter, 1999, light to less than 60 grams. Pay more attention to the phone?s shape and call functions in the development of the mobile phone industry in 1999. From 2000, the mobile phone industry has begun to strengthen its function aspects of development. 1971 the Americans SamHurst invented the world?s first touch sensor. In 1982, Sam Hurst, the company in the United States science and technology exhibition on display 33 to install a touch screen TV. How to determine the shielding effect and shielding range of cell phone jammer .
2007, the world?s first full touch screen phone. LG KE850 Until now, more powerful mobile performance. Some can even be comparable with a computer, the replacement rate is also very fast. Domestic and international mobile marketing status quo. Foreign mobile phone brands in the brand, technology has some advantages, however, follows the channels of the products led in the past period due to foreign brands, is basically a high-end delivery of goods, products, sales channels overlap, confusion with a product distribution providers compete with each other, exclusion, resulting in price management confusion inside the channels, distributors, retailers? profits low, while channels optional products increased, foreign brands are increasingly at a disadvantage. It is suggested that the customer can test and determine the shielding distance of cell phone jammer .

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