The DMR-MARC Worldwide Network

Our network is an all-digital group of over 500 DMR-MARC repeaters in 63 countries with 42070 registered users. There are 2941 registered DMR repeaters world-wide in our database. we are all amateur radio operators many of whom are Motorola Solutions employees, Motorola Service Station employees, dealers, system installers and Motorola equipment aficionados.

Please consider a donation to support the registration system and talk group distribution servers by clicking on the Donate button to the right. Even small amounts help!

Repeaters on our network are connected all the time. TRBO radios have great voice quality, great coverage, and extended battery life all in LESS THAN 1/3 the channel bandwidth of a traditional analog FM repeater with TWICE as many voice channels! Our mission is to offer you a reliable and scalable choice in connectivity: local, regional, national and international. Isn't it time you upgraded to digital radio's cutting edge?

DMR-MARC and DMRPlus Partnership Update

    Dear DMR-MARC users,

    As a follow-up to our announcement in August 2016 regarding our partnership with the DMRPlus network, we have some more exciting news to share with you regarding our collaboration with the DMRPlus team. Firstly, our testing of the new DMRPlus interconnection talkgroups, which include DMR+ USA (TG133), DMR+ UK (TG143) and DMR+ South Pacific (TG153) has been very successful and we have decided to roll these talkgroups out to all repeaters connected to our network. We have also added DMR+ Quebec - French (TG131), and DMR+ Latin America - Spanish (TG134). This will allow any device connected to the DMRPlus network, including commercial Motorola or Hytera repeaters, homebrew MMDVM repeaters or base stations, the upcoming DV4mobile and DV4mini users worldwide to access users on either the DMRPlus or DMR-MARC networks. The rollout has already started and will be completed over the next few weeks.

    Secondly, we have decided to allow all of our US regional talkgroups (TG3169, TG317x), and Canadian provincial talkgroups (TG302x) to be interconnected with the DMRPlus network as well. By combining the stable and robust nature of DMR-MARC network with the flexibility and experimental nature of the DMRPlus network, we hope to create a combined global DMR network that suits the needs of all ham DMR users.

    With regard to the traditional DMR-MARC talkgroups, we have heard numerous concerns expressed by our users around the potential impact of experimental devices on these talkgroups, so accordingly these talkgroups will remain exclusive to the DMR-MARC network for the time being. These talkgroups include:

    - Worldwide (TG1)
    - Europe (TG2)
    - North America (TG3)
    - Oceania (TG5)
    - Worldwide German (TG10)
    - Worldwide French (TG11)
    - Worldwide English (TG13)
    - Worldwide Spanish (TG14)

    We believe that by providing a two tier approach to talkgroups with some designated as robust and reliable, while others open to experimentation and feature development, we can provide our users with the best possible DMR experience.

    In addition, we would like to thank all of our loyal users for their generous contributions to our network over the last seven years. Many of you have invested time, hardware, and financial resources to our network, which has helped us to build the world's largest DMR network consisting of over 500 repeaters in 60 countries that is used by over 10,000 hams every day. Most importantly, your efforts have helped to change the face of ham radio digital communications forever and we hope the hobby is all the better for it.

    Again, we appreciate all of your support and look forward to making DMR great for the benefit of the entire ham radio community.

    The DMR-MARC Administrative Team. .

    New Repeaters on the network

      CallsignLocationFrequencyColor CodeOffsetCountry
      W5BIILake Charles, Louisiana 449.97500 10 -5.000
      BX1AAKKeelung, Northern Taiwan 430.64000 1 +0.600
      VK7RAALaunceston, Tasmania 438.60000 1 -7.000
      KH6FVBarrigada Guam, All 444.50000 1 +5.000
      KL4GRHomer, Alaska 443.40000 1 +5.000
      N2LENNew Baltimore, New York 449.02500 1 -5.000
      K1CWBristol, Rhode Island 145.33000 2 -0.600
      N4MYIJasper, Alabama 443.92500 1 +5.000
      KM3TGoffstown, New Hampshire 444.30000 10 +5.000
      W1BOSBoston, Massachusetts 449.17500 1 -5.000

    New Users on the network

      Radio IDCallsignNameLocationCountry
      2425016 LB6UD Oystein Hoyanger, Sogn og Fjordane
      2385165 OZ3GD Erik Koege, Sjaelland
      2406151 SM6VNU Bjorn GOeTEBORG, Vuostra Gutaland Cou
      2381082 OZ3HRO Henrik Bronderslev, Nordjylland
      2446042 OH8HTY Mikko Liimattala, Keski-Suomi
      4600028 VR2ZZR Andrew Tseung Kwan O, Hong Kong
      4661062 BM3HUU Tseng Taoyuan, Northern Taiwan
      2221358 IZ1PPQ Roberto Foglizzo, Piedmont
      2342882 M6LCK Lindsey Carlisle, England
      2221360 IZ1VUU MASSIMO Genova, cnty

    Featured Stories

      Help DMR-MARC maintain the Infrastructure that you enjoy, please donate today to help us keep the Servers and C-Bridges running as well as purchasing new infrastructure to help expand the network you love.

    • The Weekly Tech Net has moved back to North America TG3 at 02:00 UTC Thursday (Wednesday night in the Americas - 9pmET, 8CT, 6PT)

    • The language talkgroups- TG10, 11, 13, 14, 15 have been launched in Europe. These worlwide language talkgroups are available to most repeater trustees. If you do not have access, send us an email. REMEMBER- TG1 should only be used as a CALLING CHANNEL for less than 2 mins. Then switch to another talkgroup. For now, the worldwide net will remain on TG1 also.

    • We are excited to announce a new Worldwide French Talkgroup 11. This talkgroup is available in France, Quebec, and areas near Geneva Switzerland.

    • DMR UK has launched its new website.

    • DMR-MARC is proud to announce the launch of our Worldwide Portuguese talkgroup (15)! These new talkgroups are in addition to the English (3), Spanish (14), Dutch (22), German (20), Italian (222), Finnish (244), and Swedish (240) talkgroups that we offer. DMR-MARC is committed to building relationships with native languages and making your user experience enjoyable as it can be. Contact Us if you would like to be connected to any of these talkgroups.

    • North American, European, Australia-New Zealand, and African versions of the CPS Contacts List Generator are now functional. Check under Member Toolbox.

    • DMR-MARC needs your help! We're looking for additional curators for our Facebook site to help keep it current with good quality content related to the growth of DMR within amateur radio, plus the latest DMR-MARC news. Good writing skills and experience with blogging would be a definite asset. If interested, please message us via Facebook with your application now! - DON, VA3XFT

    • DMR-MARC on Amateur Radio Newsline (1 March 2013): Audio or Text

    • Read all about DMR-MARC at the Ontario Science Centre. Thanks VA3XPR!

    • BEWARE! CPS 8.5 requires a 25 kHz entitlement key to program 25 kHz analog channels. The entitlement key is free with a paid CPS subscription but we see no need to update subscriber firmware newer than R01.09.10 using CPS 8.0

    Network Update

    • Please make sure you read the radio programming instructions before transmitting on the network!

    • FIRMWARE MATRIX - We HIGHLY recommend ALL DMR-MARC trustees and bridge partners to ONLY use the below firmware. This helps minimize system incompatibilities.
      Repeaters ONLY R02.40.20
      Mobiles and Portables
      R01.09.10* (or newer)
      Mobiles and Portables
      R02.30.01 (or newer)
      CP200d, CM300d, XPR2500
      Mobiles and Portables
      R01.00.00 (or newer)
      C-Bridge ONLY 8743

    • IMPORTANT!!   Repeater Firmware R02.30.20 has been released. Please update your repeater immediately. NEVER BLINDLY UPGRADE TO THE LATEST VERSION OF REPEATER FIRMWARE!!! Newer firmware is not always better. Sometimes it has serious flaws. Only follow the Firmware Matrix suggestions. You have been warned. Again.

    • ADVISORY!  If you upgrade an XPR4550 or XPR6550 past R01.09.10, you will need a 25 kHz entitlement key for wideband 25 kHz analog channels. Therefore, we recommend R01.09.10 and CPS version 8 for programming those units.

    • The Regional talkgroups are now available to users in any region.

    • Regional Talk Group Status:
      Talkgroup Name Group Call Activation
      Northeast 3172
      Southeast 3174
      Southern Plains 3175
      Southwest 3176
      Mountain 3177
      Midwest 3169

    • NETWORK ISSUES: If you notice any problems, complete the form under the Contact Us link at the top of the page. This way your observation gets routed to the specialists. Complaining on the air, even during the weekly net, will do you no good. Thanks for your patience and help in this matter. If you have any additional detailed questions, contact your local repeater trustee.

    • Do you have a coordinated repeater pair, a repeater site identified, and high speed access? Would you like to be our newest network affiliate? Apply to join our network today!