Answer : Radio web with a frequency of 3 kHz to 300 kHz frequency is called radio web. Radio wave is a type of electromagnetic radiation. Data is transmitted to a computer network using radio waves using electromagnetic spectrum , called radio frequency. In this communication system the speed of transmission of signal is about 24 kilobits per second which spreads in an area of 1 mm to 100 kilometers. The frequency range found on the radio web is divided into channels or hafs. The adapter is tuned to the specified frequency during signal transmission. The adapter is then tuned to a different frequency. In this way the data is transmitted to the designated channel so that in case of networking each computer is set to the same frequency so that it can receive the signal sent by the other computer. The radio web flows everywhere so there is no need to move the sender and receiver antenna in any specific direction. This is why the consumer device can receive this signal anywhere in the range. The problem is that if there are more than one sender on the same frequency, there is interference between them. The radio web can carry the signal far and wide. The radio web is used for radio broadcasts in remote places through reflection in the sky. Radio waves of low frequency can penetrate walls. This has the advantage of being able to sit inside the radio building, but in case of difficulty, it will not be possible to separate the inside and outside space. There are two types of radio waves. Namely: controlled and uncontrolled. Regulated radio waves cannot be used by anyone without the permission of the government. Uncontrolled radio waves, on the other hand, can be used by anyone without government permission. Three types of radio wave transmissions are used for computer networks. Namely: 1. Lay-power single frequency 2. High-power single frequency 3. Speed Spectrum.