Digital Modular Radio (DMR)

Software-Defined Communications For The U.S. Navy

The Digital Modular Radio (DMR), AN/USC-61(C), is the first software defined radio to have become a communications system standard for the U.S. Military. The compact, multi-channel DMR provides multiple waveforms and multi-level information security for voice and data communications from the core of the network to the tactical edge. The DMR is currently deployed on 12 different U.S. ship and submarine platforms. The DMR system approach reduces SWAP-C on platforms.

  • Four full-duplex channels
  • Complete VHF/UHF Line-of-Sight and HF/UHF Beyond Line-of-Sight waveform capability
  • Programmable Type 1 MILS certification on 4 channels
  • Full qualification for U.S. Navy and U.S. Coast Guard shipboard environments
  • Coalition Interoperable
  • Foreign Military Sales (FMS) Five Eye Approved


Next-Generation Communications at Sea

Built using open architecture standards, General Dynamics Digital Modular Radios continue to provide improved functionality and interoperability by including waveforms and advanced network connectivity, such as the Integrated Waveform and advanced network connectivity with the Mobile User Objective System (MUOS) waveforms.

Additionally, system-wide software applications such as Dynamic Routing and Virtual Channel Exploitation extend channel capacity without additional hardware.

  • Features

    DMR Today

    Digital Modular Radios currently operate aboard U.S. Navy surface and subsurface vessels, fixed-sites and other Department of Defense communication platforms using frequencies ranging from 2 MHz to 2 GHz. The USCG will receive the DMR system in FY2019. Certified to pass secure voice and data at Multiple Independent Levels of Security (MILS) over HF, VHF, UHF, and SATCOM channels, the DMR system was developed to the U.S. Navy’s specifications and meets all the stringent environmental, EMI and performance requirements for use on U.S. Fleets and five eye countries. DMR is certified by the Joint Interoperability Test Command (JITC) to be compliant with the U.S. government’s UHF SATCOM.

    • Single radio for the entire 2 MHz – 2 GHz band
      • Lower spares cost and inventory
      • Single point of control
    • Dramatically simplified shipboard communications system architecture
      • Embedded Type 1 Encryption
      • Embedded red/black baseband switching and routing
    • Superior co-site performance using configurable embedded preselector filtering
    • Reduced manpower requirements
      • Single point of control for entire HF/VHF/UHF/SATCOM system
      • High reliability
      • Built-In Test (BIT)
    • Full logistical support in the U.S. Navy system
      • Single depot and common logistic
      • Common operations and maintenance training
      • Common manuals
      • Low life-cycle costs
      • Very low maintenance costs
    • FMS Approved
    Digital Modular Radio DMR Timeline Graphic
  • Specifications


    Digital Modular Radio (DMR) Datasheet



    View Document


    Frequency Range 2 MHz – 2 GHz, contiguous
    Size 17.5”W x 19.25”H x 22”D (EIA-310-D Clearance) (44.45 x 48.90 x 55.9 cm)
    Input Power 100 - 140 VAC, (47 - 63 Hz)
    Operating Temperature 0° to 55° C
    Vibration MIL-STD-167
    Shock MIL-STD-901E
    EMI MIL-STD-461, and MIL-STD-1399
     Reprogrammable Waveform Capabilities
    • SATCOM – MIL-STD-188-181B, 182A, and 183A
    • SATCOM – Integrated Waveform
    • SATCOM – MIL-STD-188-187 MUOS
    • Havequick I/II
    • HF/UHF Link-11
    • UHF Link-4A
    • MIL-STD-188-110B and 110C HF Modem**
    • MIL-STD-188-141B HF ALE and 3G ALE**
    • AM Civil and Military Aviation (WB/NB)
    • FM Voice and Data (WB/NB)
    • SATURN***
    • Others as Required*
     Reprogrammable Voice and Data Security Options
    • KY-57/58
    • KGV-10, 11
    • KG-84A/C
    • KYV-5 (ANDVT)
    • KY-99A
    • KWR-46
    • HAIPE
    • Others as Required*
  • Literature
  • News

    General Dynamics Mission Systems to Provide Federal Aviation Administration with Radios for Backup Emergency Air Traffic Control Communications

    March 04, 2021
    The Federal Aviation Administration (FAA) has chosen General Dynamics Mission Systems to provide new URC-300E transceivers as part of their Emergency Transceiver Replacement (ETR) program.

    General Dynamics Introduces New URC-300 Software-Defined Ground-to-Air Radio

    October 26, 2020
    The URC-300 is a versatile platform that supports multiple waveforms and provides exceptional radio frequency (RF) performance to support ground-to-air, line-of-sight and other mission critical applications.

    General Dynamics at AUSA 2020: Enabling the Army Now to Deploy, Fight and Win

    October 09, 2020
    Fairfax, VA. – General Dynamics Mission Systems will be one of four our business units of General Dynamics (NYSE: GD) participating in the Association of the U.S. Army’s 2020 Annual Meeting & Exposition, held virtually October 13 -16.

    New URC-300 Radio Now 25kHz and 8.33kHz ETSI Compliant for Global Operation

    October 08, 2020
    General Dynamics is pleased to announce that its new URC-300™ radio has completed European Telecommunications Standards Institute (ETSI) European Standard (EN) 300 676 testing and is now in full compliance with all 25kHz and 8.33kHz VHF specifications.

    General Dynamics Mission Systems at AFA’s Virtual Air, Space & Cyber Conference: Air, Space & Cyber Forces in the Fight

    September 10, 2020
    General Dynamics Mission Systems will be a part of the Air Force Association’s 2020 Virtual Air, Space and Cyber Conference to highlight capabilities that allow the Air Force and Space Force to maintain dominance across multiple domains.

    In The News: URC-300 - A Rugged And Flexible Communications Solution

    August 27, 2020
    Dawn Bushnell, product manager of ground-to-air radio systems from General Dynamics Mission Systems discusses the URC-300, the latest radio for air traffic control communications in any situation.
    More News