Describe what 'frequency hopping' entails in radio communication.

Frequency hopping involves rapidly switching between different frequency channels during transmission. This technique is utilized in various communication systems to enhance the reliability and security of the signal. By frequently changing the frequencies, it becomes much more difficult for potential eavesdroppers to intercept or jam the communication effectively. Additionally, frequency hopping helps to minimize interference from other signals in the environment, as the communication appears to jump around the frequency spectrum rather than remaining on a single, static frequency. This dynamic shifting can also allow multiple users to share the same frequency range with less risk of overlap and interference, improving overall spectrum efficiency.