C4FM (Continuous 4-Level Frequency Modulation)

C4FM (Continuous 4-Level Frequency Modulation) is a digital radio technology used for clear communication. It transmits data by varying the radio signal's frequency among four distinct levels, allowing efficient and reliable transfer of voice and information. This method improves sound quality and reduces interference compared to older analog systems. It’s commonly used in amateur and professional radio networks, enabling multiple users to communicate clearly over long distances, even in noisy environments. Essentially, C4FM enhances the clarity and reliability of radio transmissions by efficiently encoding digital data within the radio signals.