Kamis, 02 Oktober 2008

Introduction to Wireless

The term "wireless" is a generic name and has been for all the words that the presentation of the electromagnetic waves, or RF (rather than as any cable), the more signals that some or all rows notice. Examples: wireless devices, including the use of the day:

* Professional LMR (Land Mobile Radio) and SMR (Specialized Mobile Radio) is in the general economy, industry and public safety
* Two road users, including radio FRS (Family Radio Service), Gmrs (General Mobile Radio Service) and Citizens (SEM)
* For the amateur radio (HAM Radio)
* Consumer and professional maritime FM
, And * Personsøgere mobile phones to provide connections to mobile and portable applications, both personally and professionally.
* Global Positioning System (GPS): This setting allows drivers of cars and trucks, BoyzAlbum from ships and yachts, and pilot the aircraft to their position in the world.
* Cordless computer peripherals cordless mice is the example of a keyboard and printer can be connected to a computer via wireless.
* Cordless Telephone Set: This is a limited distance between aircraft, not to be confused with a mobile phone.
* Satellite: Use this option to viewers in almost all the sites selected from hundreds of channels.

The wireless LAN (for example, if you feel that the different units Wi-Fi 2.4 GHz), used different needs. Perhaps the most frequently used to connect laptops, running from one place to another. Another often used in wireless network is linked via satellite. The method of wireless transmission is the logical choice to manage LAN segments, which often have to change the site. This situation justifies the use of wireless technology:

* To sprindžio distance capacity of conventional cables,
* To avoid obstacles, such as the physical structures, EMI, RFI, or
In order to ensure that the failure of the normal network
* Customer Relations portable or temporary,
* In a situation where cable is usually difficult or not at all helpful, financial, or
* For users of cellular long distance or network connection.