Digital mobile radio (DMR) is an open digital mobile radio standard defined in the European Telecommunications Standards Institute (ETSI) Standard TS 102 361 parts 1–4[1] and used in commercial products around the world. DMR, along with P25 phase II and NXDNare the main competitor technologies in achieving 6.25 kHz equivalent bandwidth using the proprietary AMBE+2 vocoder. DMR and P25 II both use two-slot TDMA in a 12.5 kHz channel, while NXDN uses discrete 6.25 kHz channels using frequency division. The standard has become popular within the amateur radio community due to the relative lower cost and complexity compared to other commercial digital modes.

DMR was designed with three tiers. DMR tiers I and II (conventional) were first published in 2005, and DMR III (Trunked version) was published in 2012, with manufacturers producing products within a few years of each publication.

The primary goal of the standard is to specify a digital system with low complexity, low cost and interoperability across brands, so radio communications purchasers are not locked into a proprietary solution. In practice, many brands have not adhered to this open standard and have introduced proprietary features that make their product offerings non-interoperable.

the above text wide copyed from the DMR Wiki

Analog v's DMR Time slots

Link to my K.I.S.S VKDMR simplex hotspot guide

 

 

The Amateur DMR net works

BrandMeister

DMR-Marc

VK DMR

TGIF Network more infomatshion on this newest network in dashboard links please below

Dashboards

BrandMeister

Hoseline by BrandMeister

VK DMR IPSC2-AUS-1 Dashboard Repeaters

VK DMR IPSC2-AUS-2 Hotspots

TGIF Network

Pi-Star DMR Gateway 

Video first published Sep 04 2017 Craig W1MSGVideo first published Sep 04 2017 Craig W1MSG

 

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