C4FM / Fussion Radios

C4FM (Continuous 4-level FM) technology, often promoted as Yaesu System Fusion, is a digital standard popular in amateur radio. Its key features include the ability to transmit voice and data simultaneously and an automatic mode selection (AMS) function that simplifies the transition from analog to digital.

C4FM (Yaesu System Fusion) Radios – The Future of Amateur Radio

Discover digital radio communication with the C4FM (Continuous 4-level FM) standard, known as Yaesu System Fusion. This modern system combines the crystal-clear sound quality of digital with the convenience and reliability of traditional FM, offering amateur radio operators exceptional flexibility and advanced features.

C4FM radios are the ideal solution for amateur radio operators who value innovation, ease of use, and seamless interoperability with analog devices.

Key Advantages of the C4FM System:

• Automatic Mode Selection (AMS): The radio automatically detects whether it is receiving an analog FM signal or the C4FM digital signal and switches to the appropriate mode. No more manual adjustments!
  • Perfect Voice Quality: C4FM offers two digital modes:
  • V/D (Voice/Data): Simultaneous transmission of voice and data (e.g., GPS) in the same 12.5 kHz band.
• Voice FR (Full Rate): Utilizes the entire 12.5 kHz band for the highest quality digital voice.
• Advanced Data Features: Ability to transmit text messages, GPS coordinates, and even photos (Snapshot function), significantly expanding your communication capabilities.
• Easy Access to the Wires-X Network: C4FM radios are natively compatible with the global Wires-X internet gateway system, enabling quick connections with other users worldwide. Full Compatibility: These devices also operate in analog FM mode, ensuring full compatibility with your existing equipment and local analog repeaters. Choose the C4FM radio if you're looking for the ultimate blend of the analog world and the future of digital communications. We offer a wide selection of Yaesu System Fusion handheld and mobile transceivers.