Wireless telecommunications is the transfer of information between two or more points that are not physically connected. Distances can be short, such as a few meters for television remote control, or as far as thousands of even million of kilometer for deep-space radio communications. It encompasses various types of fixed, mobile and portable two-way radios, cellular telephones, personal digital assistants (PDAs) and wireless networking. Other examples of wireless technology include GPS units, Garage door openers or garage door, wireless computer mice, keyboards and Headset (audio), headphones, radio receivers, satellite television, broadcast television and cordless telephones.
SATELLITE
~ A satellite is a place station that receives microwave signals from an earth-based station,
amplifies (strengthens) the signals and broadcasts the signal back over a wide area to any
number of earth-based stations.
BLUETOOTH
~ Bluetooth technology uses short-range radio waves to transmit data between two bluetooth
devices. The data transfers between devices at a rate of 1 Mbps. To communicate each other,
bluetooth devices often must be within about 10 meters (33 feet).
WiFi (Wireless Fidelity)
~The data transfers between devices at a rate of 11 - 54 Mbps. To communicate each other,
WiFi devices often must be within about 30 meters (100 feet).
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