Radio frequencies (RF) are electromagnetic waves that fall within the range of 3 kilohertz (kHz) to 300 gigahertz (GHz). These frequencies are used for various forms of communication, including radio, television, and cellular networks. RF waves can travel through the air and can be modulated to carry information, making them essential for wireless technology. Different radio frequencies are allocated for specific uses to prevent interference. For example, AM radio operates in the range of 530 to 1700 kHz, while FM radio typically uses frequencies from 88 to 108 MHz. Understanding these frequencies helps in the design and operation of communication systems.