What is FREQ HOPPING in radio communications?

FREQ HOPPING, or frequency hopping, is a technique used in radio communications where the transmitter rapidly switches between different frequencies during transmission. This method enhances security and reduces the likelihood of interference or detection by unauthorized parties. By continuously changing frequencies, it becomes significantly more difficult for potential eavesdroppers to anticipate or lock onto the communication channel, thereby safeguarding the communication from interception.

The process of frequency hopping is particularly useful in military and secure communications, where maintaining the confidentiality of the signal is crucial. It can also help in mitigating the effects of static and interference from other radio signals, allowing for clearer communication overall. This technique is foundational in modern spread spectrum communication systems, which utilize frequency hopping as a means of improving the robustness and security of data transmission.