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''Although DStar was developed for ham radio the other standards here were developed for commercial use and later adopted by ham radio. This often leads to commercial gear being modified for ham radio, a less than desirable option when compared to the flexibility of actual ham gear. Proprietary elements of much of the digital equipment is not compatible with the spirit and meaning of ham radio, yet that is being overlooked for some reason as more of these digital standards are being used by hams.'' Motorola does not own the DMR standard. MOTOTRBO is DMR. The manufacturers of DMR equipment have agreed to use the ABME2+ vocoder algorithm from DVSI Inc. - ABME2+ is licensed by DVSI Inc.TDMA Motorola does not own the DMR standard. [[MotoTRBO]] is DMR. The manufacturers of DMR equipment have agreed to use the ABME2+ vocoder algorithm from DVSI Inc. - ABME2+ is licensed by DVSI Inc. If you intend on [[Using DMR]] you can register with the DMR-MARC Worldwide Network, which will allow you access to the many DMR repeaters available worldwide. DMR-MARC is for MotoTRBO radios as well as compatible DMR clones including the [[Tytera MD-380]].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. Motorola maintains two-slot 12.5 kHz TDMA-based systems, providing 6.25 kHz equivalency.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. Motorola maintains two-slot 12.5 kHz TDMA-based systems, providing 6.25 kHz equivalency.Like DStar, Mototrbo uses a proprietary codec. Like DStar, Mototrbo uses a proprietary codec. The voice codec is technically a form of encryption, the use of Mototrbo shouldn't even be permitted by FCC rules. In this case Motorola has enough financial muscle to encourage the FCC to "bend the rules."dPMR is an open, non-proprietary standard that was developed by the European Telecommunications Standards dPMR is an open, non-proprietary standard that was developed by the European Telecommunications Standards. FDMA Radios using dPMR are not compatible with DMR radios.==Fusion==Yaesu Fusion aka System Fusion is Yaesu company's entry into the digital mode ham radio market. It has a feature missing from many of the other digital modes in the repeater, and that is the ability to operate in mixed mode digital and analog. Fusion makes it possible for you to send digital pictures if your fusion radio has a camera.All System Fusion radios, (FTM-400DR mobile, FT1D and FT2D) radios can operate in fixed FM mode, DN (Digital Narrow @ 6.25 KHz ) or VW (Voice Wide 12.5 KHz signal).Questions: 1) Did fusion come from the Part 90 world like DMR/MotoTRBO, or was it developed for ham radio like D-Star?2) Does fusion support data roaming like D-Star and MotoTRBO?3) Talk groups and IP packet support?===C4FM FDMA===System Fusion C4FM by Yaesu is the current implementation of Yaesu's digital radio for ham. The 12.5 kHz channel spacing in using the C4FM FDMA digital modulation mode allows high-speed data communication, voice communication and error correction. The data transfer speed is 9.6 kbps.