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. As one of the Navy’s most versatile tactical radios, one four-channel DMR can simultaneously support voice and data satellite communication networks, Mobile User Objective System (MUOS) waveforms, Single Channel Ground and Airborne Radio Systems, HAVEQUICK, and other tactical, HF/VHF/UHF radios.

The DMR is currently deployed on 12 different U.S. ship and submarine 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

See It In Action

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*

General Dynamics Mission Systems to Deliver Additional Digital Modular Radios

May 06, 2022
General Dynamics announced that it was awarded a contract modification under an existing U.S. Navy contract for the continued procurement, manufacturing, testing and delivery of AN/USC-61(C) Digital Modular Radios (DMR), High Frequency Distribution Amplifier Group components and engineering services…

Video: Watch Our HOOK3 Combat Survival Radio Auto-Activate in Salt Water

March 15, 2022
If a pilot is forced to eject, the HOOK3 Combat Survival Radio transmits encrypted location data in short bursts, reducing the risk of interception or detection. This new feature is automatically activated when the radio detects salt water or excessive G-force.

General Dynamics Mission Systems to Provide U.K. MoD with Combat Search and Rescue System Radio Test Sets

August 23, 2021
The U.K. Ministry of Defence (MoD) has selected General Dynamics Mission Systems to provide an additional 30 CTS-6025 Combat Search and Rescue (CSAR) Test Sets via a multi-million-dollar contract.

General Dynamics Mission Systems Combat Search and Rescue System Cleared for F-35 Aircraft Use

August 04, 2021
The Quickdraw2 Handheld GPS Interrogator is part of the General Dynamics HOOK Combat Search and Rescue System and is designed to quickly locate and rescue downed pilots and isolated military personnel.

General Dynamics Mission Systems Introduces Badger Software-Defined Radio

August 02, 2021
General Dynamics introduced the new Badger software-defined radio at the Navy League’s Sea-Air-Space Symposium in National Harbor, Maryland. Badger is a compact, 2-channel radio that provides Multiple Independent Levels of Security (MILS) for ship-to-ship and ship-to-shore voice and data communicati…

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.
More News

Introducing The Badger Software-Defined Radio

The Badger™ is a compact, 2-channel software-defined radio that provides multi-level information security of voice and data communications from the core of the network to the tactical edge.

The Badger is based on the long proven Digital Modular Radio (DMR) that currently operates aboard U.S. Navy surface and sub-surface vessels, fixed sites and other Department of Defense communication platforms.

Learn More About Badger