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.

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


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
  • Others as Required*

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