Thomas, W2XQ, has a good section of links to M17 resources ⩘ on his site.ĭMR is a digital radio standard originally designed for commercial use and developed by the European Telecommunications Standards Institute (ETSI) beginning in 2005, which hams now are adapting for amateur radio use. One is the M17 Project ( more M17 info ), and the other is called FreeDV. There also are a couple open systems slowly being developed for amateur radio, which are based on an open source speech codec (vocoder) called Codec 2.NXDN, an open commercial and public safety standard initially developed by Icom (implemented as IDAS) and Kenwood (implemented as NEXEDGE), and now overseen by members of the NXDN Forum.Governed by the Telecommunications Industry Association and others. P25, a standard developed for North American public safety services.System Fusion, a proprietary system for amateur radio by Yaesu.

D-STAR, an open standard developed for amateur radio by the Japan Amateur Radio League, with equipment by Icom and Kenwood.Other digital voice systems being developed or adapted for use by hams: ∧ Top | Quick links ∨ | Full TOC 1) What is DMR? Short answerĪ commercial digital voice system that amateur radio enthusiasts are adapting for use by hams. My personal practice is that I power on my personal, low-power hotspots only when I'm monitoring and in control of them, adhere to my local band and frequency use plans, and leave adequate pauses between transmissions. It's our responsibility to understand and adhere to those regulations and best practices. Important! The regulations and best practices that apply to amateur radio-including use of frequencies, control of our stations, and on-air courtesy-also apply to our use of personal, low-power hotspots. Hotspots and control operator responsibilities The article unfolds over time, loosely following the stages of my own journey of discovery into DMR however, I'm also going back and revising it as I continue to learn more. Just as with my D-STAR article, this article is written from the point of view of someone who doesn't live within range of a digital voice (DV) repeater, someone for whom a personal, low-power hotspot is an important key to accessing a digital voice system, a gift that opens doors to the whole wide world. I ordered a DMR HT, and started this page to record my new adventure.

I guess I must be a bit crazy, but a learning opportunity presented itself, so I decided to dive right back into another bowl of baffling info-soup and learn how to swim all over again, this time in the DMR soup bowl. So why did I decide to adventure off in a new direction already? After weeks of intense learning and effort, I felt like I was just beginning to get a handle on D-STAR, having put together a nicely working solution for my shack as well as for mobile.

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