Yaesu System Fusion Background

System Fusion is Yaesu’s implementation of Digital Amateur Radio, utilizing C4FM 4-level FSK Technology to transmit digital voice and data over the Amateur radio bands. In the early 2000’s GMSK emerged in the Amateur radio market as the dominant digital mode, however in 2013 Yaesu introduced “System Fusion” which quickly became the dominating digital format…

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Fusion Q&A

What is C4FM? – In the simplest form C4FM is the method of digital that Fusion uses for communication. C4FM is used by not only Yaesu for amateur communications but is also used by public safety communications. While the two are not compatible C4Fm was selected due to the high voice quality that it produces….

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