Wireless Internet Technology

Wireless Internet is wireless Internet technology, which in this case the cable media was replaced with media electromagnetic wave.

Have you ever thought how to work the Wireless Internet. What if I turn asked, "where wireless internet". WiFi, radio, satellite or cellular do not get confused and do not stare. You will get an explanation here.

Wireless Internet access is actually described as a type that is based on radio frequency. You've probably seen the houses with a small white box-shaped rectangular (canopy) mounted near the roof of their house. They are the ones with wireless Internet access.

Let us begin to talk of Wireless Internet Service Provider (WISP) that is connected to your computer. From your ISP, a signal will be beamed to a tower or even through some of the tower before it gets to your home.

Basically, wireless Internet service is the signal emitted and the received signal must be in a position that actually seen (not obstructed by anything). This means, for example, you wrote idly climbed onto the roof and stand in front of your receiver, then you will be able to see a transmitter tower. However I do not recommend it because the signal emitted can result in less good for your body. Besides the risk of falling, of course.

After the signal was emitted from the ISP can be captured by your receiver, then the signal will go through different media, from the air and then into the network cable (RJ-45) leading to a modem (modulator / demodulator). Once the signal is modulated, is converted to a form of information that can only be received by the wireless network. Meanwhile, when in-demodulation, the signal is converted into an acceptable computer. Here's the picture.

As I explained above, it was all done by using radio frequency. Maybe you have a cordless telephone number that there will be read as 900 MHz, 2.4 GHz, 5.2 GHz or 5.7 GHz. This is a radio frequency that can be operated on a cordless phone. Similarly, the wireless Internet!

WISP uses this frequency on the grounds that frequency is the frequency of the public so no need to apply for a permit (license) to use it. 

May be the problem is security, public frequencies can be said easily intercepted because it is common and everyone can use it. But do not worry, because the frequencies used are usually quite safe. This is because the use of encryption is added to the signal emitted. Without the code description it will be very difficult for someone to be able to decipher the signals sent by DES encryption is a method commonly used.

Now let us discuss the above frequency waves. Perhaps you are wondering why there should be many waves (900 MHz, 2.4 GHz, 5.2 GHz or 5.7 GHz)

Look, let's say like a highway. If there is only one way, then you can imagine how crowded the path that is used. That is why so many frequency bands.

Use of frequency bands such variety also carries some consequences. The smaller the frequency the more wide-reaching but worse quality. As a comparison, if you use the 900 MHz, the range may be as high as 40 miles (± 64 km), but if you use the 2.4GHz range from transmitter to receiver is limited to about 5 miles (8 km). Far away the difference. So now it's up to you, select the range or quality.