Digital 2-Way Radio
Kenwood NEXEDGE
Icom IDAS
NXDN is implemented by Icom in their IDAS system.
DStar
DStar was designed for amateur radio.
DMR
DMR is an open and published international digital radio standard that specifies the 2-slot (channel) TDMA communications. DMR is amateur radio's newest digital protocol. It was developed for commercial use, however, ham radio now has approval to use DMR.
dPMR
dPMR is an open, non-proprietary standard that was developed by the European Telecommunications Standards Institute.
TRBO / MOTOTRBO
Motorola digital radio. Compatible with the European 2-slot DMR standard and uses Time Division Multiple Access (TDMA). MOTOTRBO has a few more features than a standard DMR radio including IP Site Connect.
MOTOTRBO radios have the ability to scan an analogue and digital channel for activity.