DMR - Resiliency
Like No Other

The DMR Association invites you to join the crucial conversation about the future of Critical Communications
at (IWCE) in Orlando Florida on Monday, March 25th.
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Supporting the
ETSI DMR Standard

The Digital Mobile Radio Association plays a crucial role
in the continued success and evolution of DMR technology, ultimately aiming to elevate the user experience.
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Reduced Costs
and Complexity

The DMR air interface provides coverage similar to analogue, offering the benefits of digital without the need to increase the number of repeater sites.
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Unleashing the
Potential of DMR

The Digital Mobile Radio Association's application interface (AIS) presents a significant advancement, unlocking a new dimension of functionality and empowering users.
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DMR is trusted by over
15 million users worldwide

Our resolute team are proud to provide unrivalled support to its global members and the assurance that digital mobile radio is the most widely used digital radio standard for the business world.

The DMR Association’s mission, since 2005, has been to support the European Telecommunications Standards Institute during the DMR standardisation process. To provide the ultimate service to our members we focus on the commercial applications of DMR comprised in Tier II and Tier III.

We welcome new members from across the globe. Whether you are a business that utilises DMR, or an individual that supports the professional use of the DMR standard, you’ll be in great company. We truly appreciate your help in enabling us to drive forward our mission.

Invitation to Join the
Discussion at IWCE 2024

Speaker: Brian Seedle (DMR Association)

IWCE - Orange County Convention Center in Orlando, Florida
Monday, March 25 | 2:00pm - 2:30pm - Location: W230A

DMR Association Mission

Visit the IWCE website for more information

DMR - Resiliency Like No Other

For LMR stakeholders, the allure of the "latest tech" can be strong. The promise of increased efficiency, functionality, and innovation can be very attractive. However, relying solely on the latest tech can be risky, especially when facing challenging situations or crises.

The question Brian Seedle puts to the audience: - Is it possible to supplement 4G, 5G, LTE, PoC and MCPTT networks promoted for first responders, and build a truly critical wide area backup system that is robust and unaffected by flood, fire, loss of power grid, loss of public networks, in fact loss of everything - without spending billions of dollars?


Who is the speaker, Brian Seedle?

Brian Seedle (MSc) has been working in the LMR industry for over 40 years. Brian has been responsible for the design and implementation of digital, infrastructure architecture particularly specialising in narrow band LMR. Brian is the chairman of the U.K Trunking Standards Maintenance Group, a member of ETSI ERM/ETSI TGDMR Group, and a referee for the Science and Engineering Research Council. Brian has been writing Open Standards for analogue and digital LMR since 1988 and is currently the lead author for the ETSI DMR Tier III Standard. Brian is a director of the DMR Association and a member of the DMR Technical Working Group.

DMR Association Mission

Improving standards:
Elevating experiences

We combine our knowledge and expertise with education, awareness, certification, and interoperability training to guarantee that today’s digital radio technology customers experience the highest level of service. We invest our time and energy to futureproof your investments.

As a member of the DMR Association you’ll benefit from the frequent and direct communications that we hold with global regulators, trade bodies and standards organisations. We are committed to ensure that all DMR products reach the market within a successful, open, multi-vendor chain and that our members gain from continuous, competitive development.


The DMR Applications Interface (AIS) represents a significant advancement in the digital mobile radio (DMR) ecosystem, supporting standardised interoperability between diverse technologies and manufacturers.

Application Interface (AIS)





DMRA News

Please join us in welcoming
Micromap as a category 1 member.


Micromap Group: Your Trusted Partner in India for Seamless Communication with CONVEY DMR Radios.

Micromap Group has a proud history of being at the forefront of communication solutions. Micromap consistently earned the trust of prestigious clients by delivering reliable and innovative technology. Now, they are excited to introduce CONVEY DMR radios to further empower clients communication needs. Visit Members page >


Welcome Micromap Group to the DMR Association
Welcome Astronics Test Systems (ATS) to the DMR Association
Welcome Astronics Test Systems

Astronics Test Systems (ATS) ensures optimal performance through innovative test solutions. Astronics LMR test equipment is used worldwide by self-maintained law enforcement agencies, utilities, railroads, airlines, defense and radio dealers who maintain their customers’ radio systems. Visit Members page >


Welcome GroupTalk to the DMR Association
Welcome GroupTalk

GroupTalk Sweden AB develops & provides Push to Talk & collaboration services for enterprise customers, leveraging smartphones, PoC Devices, PC Dispatch & two-way radio systems. GroupTalk's mission is to provide market leading group collaboration & safety services for enterprise clients. Visit Members page >


Welcome Bharat Electronics Limited to the DMR Association
Welcome Bharat Electronics Ltd.

Bharat Electronics Limited, was established in Bengaluru in 1954 by the Government of India under the Ministry of Defence. Bharat Electronics provide a wide range of professional services to the Ministry of Defence and to non-defence business sectors from Voting Machines to Cyber Security. Visit Members page >


The DMR Association: Your trusted partner for digital radio Success, boasts a diverse membership of organisations who play a crucial role in the development and widespread adoption of DMR technology.

Members of the Association >


Key features of the DMR standard

  • Interoperability between manufacturers
  • Backwards spectrum compatibility
  • State of the art Forward Error Correction
  • Options for traffic encryption
  • IP Data
  • Fast Automatic Vehicle Localisation (AVL)
  • Optional encryption for secure communications
  • Direct Mode of operation
  • Doubling of capacity in existing channels
  • Data applications interface (AIS)
  • Two-slot Time Division (TDMA) operation
  • Green credentials

DMR enables a single 12.5 kHz channel to support two simultaneous and independent calls. This is achieved using TDMA, Time Division Multiple Access. Under TDMA DMR retains the 12.5 kHz channel width and divides it into two alternating timeslots A and B where each timeslot acts as a separate communication path.

Each communication path is active for half of the time in 12.5 kHz of bandwidth, each uses an equivalent bandwidth of half x 12.5 kHz or 6.25 kHz. This is known as having an efficiency of one talk path per 6.25kHz of spectrum. However with DMR the channel as a whole maintains the same profile as an analogue 12.5kHz signal.

This means that DMR radios operate in the licence holders existing 12.5 kHz or 25 kHz channels; there is therefore no need for re-banding or re-licensing but at the channel capacity is doubled. Read More >

DMR Double Capacity



Optimising standards, extending capabilities, and reducing costs through the creation of multiple and mutually compatible products.


The primary goal is to specify affordable digital systems with low complexity. DMR provides voice, data and other supplementary services. Today, products designed to its specifications are sold in all regions of the world.

The DMR Standards