Terrestrial Microwave - land use terrestrial microwave transmitter and receiver. Equipment such as satellite dishes. Terrestrial microwave use low-gigahertz range, all communication is limited to line visibility. Path between relay stations, located approximately. 30 miles from each other. Microwave antennas are usually placed on top of buildings, towers, hills and peaks.
Communication satellites - satellites using microwave radio as their medium for communications, which do not depart from the Earth's atmosphere. The satellites are deployed in space, usually 22,000 miles above the equator. This orbit systems can receive and transmit voice, data and television signals.
Cellular and PCS systems - Use multiple radio communication technologies. The systems are divided into different geographical areas. Each area has a low power radio transmitter and antenna relay device for relay calls from one area to the next field.
Wireless LAN - Wireless LAN network using high-frequency radio technology similar to digital cellular technology and a low radio frequency. Wireless LAN-technology uses spread spectrum to enable communication between multiple devices in a limited area. An example of an open standard wireless radio-wave technology, IEEE 802.11b.
Bluetooth - short-distance wireless technology. Work on approx. 1Mbps range from 10 to 100 meters. Bluetooth is an open protocol for wireless exchange of data over short distances.
Wireless Web - Wireless Internet refers to using the World Wide Web through devices such as mobile phones, pagers, PDA and other portable communication devices. Mobile Web service provides always / everywhere access.
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