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C4FM (Fusion) 

C4FM

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C4FM-Fusion is a system developed by YAESU. It is based on 4FSK (like DMR), and also transmits 4 frequencies with a total data rate of 9600 bits/s. It uses the same AMBE+ Codec as DMR, but needs only 3600 bits/s. The extra bits are used in C4FM-Fusion in a different way. They can be used for data transfer (e.g. GPS) but also for additional error correction to make the speech more stable during interference. There is also a mode (VW) for high speech quality which uses all bits for speech only.

What you need to get started:

  1. A Yaesu digital radio

What you can do:

  1. Have a simplex QSO with another Yaesu digital radio user.
  2. Have a QSO with another user through a Yaesu Fusion Repeater.
  3. Have a QSO with another user through a Yaesu Fusion Repeater via WiresX.