Navy asks General Dynamics to build software-defined radio systems on board with NSA Type 1 encryption

SAN DIEGO- Communications experts aboard the US Navy are asking General Dynamics Corp. to provide AN/USC-61(C) maritime radios to enable naval vessels and Navy surface submarines to communicate over high frequency (HF) and ultra high frequency (UHF) line of sight, Communications via UHF satellite (SATCOM) and very high frequency (VHF) radio bands.

Naval Information Warfare Systems Command (NAVWAR) officials in San Diego on Monday announced a $49.9 million order from the General Dynamics Mission Systems segment in Scottsdale, Arizona, to build AN Digital Modular Radio (DMR) systems. / USC-61(C). .

The contract includes high frequency distribution amplifier array components and engineering services for the ongoing commissioning and maintenance of the maritime radio communications system.

The DMR is a modular, software-reprogrammable shipboard radio system with built-in cryptography that provides all radio frequency (RF)-to-baseband and baseband-to-RF conversion functions required for the U.S. naval line-of-sight, beyond beyond line of sight and satellite communication systems.

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This contract amendment requires General Dynamics engineers to address new radio communications requirements that were not included in the original contract award. NAVWAR awarded the order on behalf of the Navy Program Executive Office for Command, Control, Communications, Computers and Intelligence (PEO C4I) in San Diego.

The AN/USC-61(C) is a maritime Software Defined Radio (SDR) that has become the standard for the United States military. The compact multi-channel DMR offers several different waveforms and multi-level information security for voice and data communications.

The radio includes NSA Type 1 encryption; integrated red/black baseband switching and routing; co-site performance; reduced labor requirements; single point of control for HF/VHF/UHF/SATCOM radio communications; and built-in test (BIT).

Software defined radio waveforms are computer programs that allow SDR-enabled radios to operate on different frequency bands with different encryption and cybersecurity features. The AN/USC-61(C) operates on Navy surface ships, submarines and other military platforms using frequencies from 2 MHz to 2 GHz.

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General Dynamics has certified the DMR to transmit secure voice and data at multiple independent security levels (MILS) over HF, VHF, UHF, and SATCOM channels, and to withstand the effects of electromagnetic interference and other harsh operating conditions .

The DMR is also certified by the Joint Interoperability Test Command (JITC) to meet the US Government’s MIL-STD-188-181B/182A/183A requirements for UHF SATCOM. General Dynamics builds the AN/USC-61(C) using open architecture standards.

On this order, General Dynamics will perform the work in Scottsdale, Arizona, and is expected to be complete by December 2022. For more information, contact General Dynamics Mission Systems online at, or NAVWAR at www .mil.