Tuesday, June 30, 2009

Article review

Hi friends , I was just browsing through the internet when I stumbled upon a site related to articles.By working with the best sources,they have gathered all the essential publications covering a wide range of subjects, topics and are continually adding more articles to our collection. Their tutorials and articles are organized by categories: Arts & Entertainment articles, Automotive, Business & Finance articles, Computer & Technology tutorials, Health & Fitness tutorials, Home & Garden advice, News & Society, Reference & Education articles. I am very much interested in wireless spectrum and I gonna blog about the same.Unlike many other wireless standards, 802.11 runs on "free" portions of the radio spectrum. This means that (unlike cell telephone communications) no license is required to broadcast or communicate using 802.11 (or Wi-Fi).The free portions of the radio spectrum used by 802.11 (and Wi-Fi) are the 2.4GHz band, and, more recently, the 5GHz band. As you may know, many household appliances such as microwave ovens and (most significantly) wireless telephone handsets also use these free spectrums.With a wireless telephone handset, a base station is connected to the telephone line, and the handset communicates with the base station over the "free" radio frequency, so that you can roam about your home or office while talking on the phone. Clearly, these wireless telephone handsets are not the same thing as cell phones, which do not connect to a telephone wire at all and use licensed portions of the spectrum.

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