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Christmas Eve December 24, 1906, around 20:00, the shuttle near the coast of New England vessels, some of got used to the 'Didi blah' Morse code sound radio operator who suddenly heard headphones came someone is reading the Bible story, someone took the violin, but also the styles of Handel's "soothing music" radio operator who Zhengzhu, they loudly shouting companion's name, have transferred to companions headphones to listen to, Sure enough, Apple 6 return cable recycling, we all clearly heard the sound of voices and music, and finally heard the sound kind of blessing, a few minutes later, it was rumored that the headphones used to listen to the sound code. In fact, this is not a miracle occurs. Instead hosted by the American physicist organizations Fessenden and radio broadcast for the first time in human history. The broadcast equipment by Fessenden spent four years out of the design, including special high-frequency AC wave radio transmitters and amplitude modulation system can, from this point onwards, carrying the sound waves can begin fly a. Before There are also countless people have made achievements in research on radio, which is the father of the most famous radio broadcast of one American Banat, 史特波斐德, he began research in 1886, after ten years unremitting efforts and achieved success, in 1902, he was in the city of Murray, Kentucky, he conducted the first radio broadcast. They put away in Murray Plaza microphone. '史特波斐德 son in front of the microphone to speak from the Banat, playing harmonica Samsung LCD cable recovery, he placed five crystal radio in the nearby woods, can clearly speak and hear the sound of the harmonica, the test was a success. And later it was broadcast in Philadelphia and received a patent. Now, in the Murray State University campus trees still have 'the father of one radio Banat' 史特波斐德 'monument. At the same time radio phone gradually for war. In the first and the end of World War II, Samsung S6 plug cable recycling, it has played a great power, that it was the Second World War is called early 'radio war' shape, such as a one-way radio pager There bricks so great. Callers day remembered in the machine kept all kinds of information, a bit like today's taxi dispatcher, is a 'big broadcast' mode, you hear all the information Callers are sent. You have to carefully pay attention to their name, missed, they never found. Later, the pager received individual characteristics. Each pager have taken a digital name, so it only received their call, and ignore other information. When you hear their call, pager will beep sounded to its owner so the need to find a phone to call members asking for information, which is an analog pager. In 1968, Japan launched the first notification tone and message paging system with voice simulation of this type in the 1501 ^ 192 mobile phone band. 1970s, there have been a voice pager ^ certain information before arrival, pager emits a predetermined sound signal, the user can open the machine to hear this information. The early 1980s, the emergence of digital pagers, its screen is small cable recovery, only the number written on it, to show different numbers to represent different information content. Obviously, this pager can transmit information on the rich more than the previous one, this type of paging system first used in 1973 in the United States, which uses a frequency of 1501 and 4501 ^ 2 ^ Jian Jian 2. Digital paging system is not only 'artificial', but also 'Auto' is. Artificial pages are handled by the operator, then the information is sent by the operator to specify the user after encoding. The above procedure automatic paging is handled automatically by the computer, not people to operate. In subsequent years there has been pagers can display text messages, which might tell you need to return the phone calls, meetings start time or flight situation. Apple 6 Power cable recycling | Jilin cable recycling | Obo Obo electronic is supplied by Shenzhen Electronic Technology Co., Ltd. Shenzhen City Aobo Electronic Technology Co. (www.aobodz.com) strong, credible, in other industries in Shenzhen, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Obo electronics into the brilliant and you work for a better future!