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Wireless communication is the transfer of information or power between two or more points that are not connected by an electrical conductor. The most common wireless technologies use radio. With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio wireless technology include GPS units, garage door openers, wireless computer mice, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones.
Somewhat less common methods of achieving wireless communications include the use of other electromagnetic wireless technologies, such as light, magnetic, or electric fields or the use of sound. The term wireless has been used twice in communications history, with slightly different meaning. It was initially used from about 1890 for the first radio transmitting and receiving technology, as in wireless telegraphy, until the new word radio replaced it around 1920. The term was revived in the 1980s and 1990s mainly to distinguish digital devices that communicate without wires, such as the examples listed in the previous paragraph, from those that require wires or cables. This is its primary usage in the 2000s. LTE, LTE-Advanced, Wi-Fi and Bluetooth are common modern wireless technologies used in the 2000s.
Wireless operations permit services, such as long-range communications, that are impossible or impractical to implement with the use of wires. The term is commonly used in the telecommunications industry to refer to telecommunications systems (e.g. radio transmitters and receivers, remote controls, etc.) which use some form of energy (e.g. radio waves, acoustic energy,) to transfer information without the use of wires. Information is transferred in this manner over both short and long distances.

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  1. old11bravo

    Next thing you know we'll have color TV, wireless phones and clouds that store data.

    Imagine my amazement when I learned that I could be loading my mags twice as quick! No way right? One of my very good shooting buddies gave me a Maglula loader a few months ago and because I didn't understand that new fangled magic, it sat in my range bag for many months and countless trips to...
  2. uscsoldier

    Digital wireless cooking thermometer

    What's everyone using? I've been using A ThermoPro TP 20 for almost a year now and it works great. I just wanted to see what everybody else was using and what you think about the ones you have.
  3. The Heretic

    Wireless security cams?

    I live on 20 forested acres. About 4 acres are right around the house and about half of those - ~2 acres - are mostly cleared for the house, the shop, landscaping and the driveway. I am about 100 yards from the private road. My shop is almost 100 yards from the house. I spent about $15+K to...
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