New DMR IOP Analyser for Category 1 Members

Category 1 members can now access a DMR TWG IOP Analyser and documentation. Download and actively use it to prepare for upcoming IOP test sessions.

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.

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

The Digital Mobile Radio Association's application interface (AIS) presents a significant advancement, unlocking a new dimension of functionality and empowering users.

Digital Mobile Radio is the most widely adopted standard for business, and our resolute team provides unmatched support to our global community.

Driving DMR Excellence Since 2005. The DMR Association's mission is to support the European Telecommunications Standards Institute in the ongoing development of the DMR standard, with a focus on its commercial applications in Tier II and Tier III.

Become a Member and Shape the Future of DMR. We warmly welcome businesses and individuals who champion the professional use of DMR. Your membership enables us to advance our mission and the evolution of this vital technology.

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.

Leveraging DMR TWG Software for Compliant Device Certification

The DMR Association's Technical Working Group (TWG) is responsible for interoperability, compliance, testing, and the organisation of laboratory test sessions. To certify their equipment, DMR manufacturers are required to deploy a suite of IOP tests developed by the TWG.

Acknowledging the importance of standardising the compilation of test session results, the DMR TWG has developed software tools that facilitate the easy reading, review, and validation of test results within a consistent format, and provide some automation in the validation process by comparing test results with a reference maintained by the TWG.

These valuable IOP Tools Applications and Documentation are readily available to all Category 1 members on the DMR Association website within the following folder structure:

(TWG) Technical Working Group Documents
DMR Interoperability (IOP)
IOP Tools Applications and Documentation

Category 1 Members who are considering participating in IOP test sessions are strongly encouraged to download these applications and actively use them to provide critical feedback to our developers.

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

Join us in welcoming Mambu srl
as a category 2 member.

Based in Carpi located in the province of Modena, Italy, Mambu srl develops modular and customisable software solutions specifically designed for the healthcare transport sector, addressing both urgent and non-urgent needs.

Their comprehensive platform streamlines operations by efficiently managing personnel records, shift schedules, service coordination, warehouse logistics, vehicle fleets, and training programs. With convenient mobile accessibility, Mambu empowers healthcare transport organisations to optimise their efficiency and enhance overall management, providing tailored tools for their unique requirements.

Welcome Mambu srl, to the DMR Association

Welcome AE Telelink Systems

AE Telelink Systems, established in 1994 to promote Smartrunk VHF Radio Communication Equipment in India, is now a leading Indian wireless telecom company serving critical sectors like Railways, Defence, and Aviation.

Welcome WaveConnect

WaveConnect Communications provides surveillance and communication solutions to Indian government security agencies. WaveConnect improves national security through innovation, reliability, and a robust product portfolio.

Welcome KOMO-COM s.r.o.

KOMO-COM is a Czech Republic-based company with a distinguished track record of over 20 years in the communication solutions industry. Their focus lies in system integration, ensuring seamless collaboration between various technologies.

The DMR Association: Powering DMR Forward

The DMR Association unites key players in Digital Mobile Radio (DMR) technology. Our diverse membership of over 200 companies fosters innovation, drives adoption, and ensures industry standards. Visit our members page to connect with DMR experts and unlock the full potential of digital radio.

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

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