The use of wireless connection so far rely on electromagnetic waves, well-shaped radio waves or light. In the early 1990s, when wireless technology is still not very developed, several organizations, ranging from banks to universities, could use a modem-based optical laser to connect two separate locations in a line-of-sight. The distance between the two locations is a maximum of no more than a few hundred meters. Bandwidth can reach up to 10 megabits per second. Interference occurs when rain falls or when the dust pollution so bad, so the laser beam path was blocked.
This technology is generally used to connect two high-level building that is not too far away-the same one-another. For example, between the buildings of foreign embassies consulates with offices across the street Thamrin in Jakarta. The distance is less than 50 meters in range of view-a direct (line-of-sight). Alternative is cheap, safe and fast-pairs. At that time, in the 1990s, licensing is not required, unless the owner of the building. The main problem faced is the maintenance of optical equipment and limited space utilization. Dust and other dirt is the main enemy that often contaminate the lens, especially in the high polluted areas such as roads Thamrin.
Technology has greatly evolved since then. Communication data via light waves generally move from free air transmission to the transmission through optical fibers. Decrease in the price of optical cable and its associated equipment is very helped increase its popularity in applications, point-to-point that requires high bandwidth and range from short to long. Distance of reach of this technology is increasingly distant, and its utilization as a substitute for copper-links increasingly popular.
In the form now available, wireless technology has been the better for close-range use. Ranging from blue-tooth up to the wi-fi, more and more products flood the market. Not only their use becomes easier, prices and kapasitasnyapun better. When the cable technology evolved from a short distance to a remote, wireless technology developed from long distance to close. Management problems and penggunaannyapun be very simple, so that does not require special training. Availability in the free market is also getting better, and quickly integrated with the product spectrum of information and communication technologies, ranging from the PDA (Personal Digital Assistant), lap computers (laptop computer) to the servers that serve the computing facilities in office buildings, hotels and even shopping malls.
The link is to highlight here is how to control the telecommunications authority in the use of wireless technology, particularly concerning the strategy with radio frequency allocation, licensing and monitoring and supervision. With a very broad spectrum, radio frequency management become very central to the development of information and communication technology in each country. It is precisely this that makes it impossible, in addition to interesting to be listened to because of the very serious implications in the life of nation and state. Frequency spectrum of this vast touching equipment household, cell phone to the television broadcasts via satellite directly emitted in the air.