The DMR Association welcomes you

We’re here for our members, working worldwide, to continuously reaffirm Digital Mobile Radio as the most widely used digital radio standard for the world.
Read More

Applications Interfacing

We publish and maintain an application interface for vendors to extend the abilities of their DMR digital mobile radio systems.
Read More

Cost-effective technology

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

Digital Mobile Radio (DMR) is trusted by over 15 Million Users

Welcome to the DMR Association; we’re here for our members, working worldwide, to continuously reaffirm Digital Mobile Radio as the most widely used digital radio standard.

We began in 2005 as a group of market leading public mobile radio manufacturers to support ETSI during the DMR standardisation process.

The DMR Association’s Technical Working Group works constantly on the Interoperability process, providing standards certification for manufacturers, the majority of which is at the highest Tier 3 specification. Membership is open to all organisations or individuals where DMR is a regular part of their business and for those working to support the professional use of the DMR standard in other ways.


DMRA News

Interoperability Testing Invitation and Update

Motorola Solutions has invited other members of the DMR Association Technical Working Group to participate in Tier III interoperability testing during September and October 2021.

Radio Activity also hosted Tier III interoperability testing in May this year, the results of which are currently being reviewed prior to the issuing of certificates.

DMRA Interoperability Testing Invitation and Update


Sphere join the DMR Association
Welcome, Sanchar Communication

The DMR Association are delighted to welcome Sanchar Communication Systems as a category 1 member. Established in 2007 The company is involved in design and manufacture of professional two-way radio communication. Visit Members page >


Sphere join the DMR Association
Welcome, Sphere Com Services

The DMR Association are pleased to welcome Sphere Com Services as a category 1 member. Established in 2012 with its Head Office in Delhi. Specialising in design and implementation of mission critical solutions.
Visit Members page >


Auctus join the DMR Association
Auctus upgrade to Cat 1 member

The DMR Association are pleased to announce that Auctus have upgraded their membership to Category 1. Auctus Technologies is an innovative-driven high-tech enterprise that provides solutions for wireless communication. Visit Members page >



Category 2 & 3 members: opportunity to drive improvements

The DMR Association are delighted to welcome Sanchar Communication Systems as a category 1 member

We know how important it is for dealers to understand the needs of users to continually deliver the best service.

As such the DMR Association is creating a dedicated User Group for category 2 and 3 members to provide a means to communicate with each other. There will be no joining fee for DMR members.

The voice of the User Group will be used as a valuable tool to inform DMRA manufacturers and technical working group members of the issues that are important to you, such as improvements to the ETSI DMR standard.

If you'd be interested in joining the User Group, email brian@seedle.co.uk Thank you.




DMR technology is already supporting
over 15 Million users worldwide.

DMR Key Benefits

Our Mission

By using a combination of education, awareness, certification and interoperability training we operate to make sure that business buyers of today’s digital radio technology have the security of knowing that they are investing in the future.

Here at the DMR Association we provide our membership with the resources necessary to make certain that DMR products reach the market within a successful, open, multi-vendor chain. We’re in frequent and direct dialogue with regulators, trade bodies and standards organisations around the world to maintain the standard.


DMRA Mission

DMR applications interface (AIS) standards unify interoperable voice and data solutions.

Read more

Key features of the DMR standard

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

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


DMR, Digital Mobile Radio, developed by ETSI, European Telecommunications Standards Institute, and first ratified in 2005.

The DMR Standards