Simplex digital communication modes

What are digital modes?

The popular 2m phone digital modes are DMR, D-STAR and System FUSION. There are also older protocols like NXDN and P25 that are not usually used by amateur radio enthusiasts.

Yaesu System FUSION aka C4FM###

Mostly referred to as System FUSION, it is proprietary, designed by Yaesu and is ised only on Yaesu radios. System Fusion happily coexists alongside analog FM on many Fusion repeaters and a user can “go digital” by simply pressing a button on the HT or mobile radio. Yaesu reeaters are multi-mode capable and transcode an incoming digital signal to analog or an incoming analog to digital so repeater users whether analog or digital can coexist happily. For simplex operatios it probably makes sense to at least begin analog and then switch to digital if both devices support Yaesu system Fusion.