Digital Wideband Transmission System (DWTS) (United States), Systems

Description
The US Marine Corps DWTS is the principal communications system used by operational formations to communicate between ships and ship-shore. It is made up of four main elements - ITT unit level circuit switches (the 150-line AN/TTC-42 and the 30-line SB-3865), a basic radio system with the Raytheon/Unisys AN/TRC-170 as its nucleus, the digital distribution system and the AN/MRC-142 LOS UHF radio relay.

Description
AN/MRC-142(A) The Marine Corps was originally scheduled to receive 134 AN/TRC-170s under contracts awarded in January 1990. Deliveries of the AN/MRC-142 (subsequently given the A suffix) were then due to start in July 1991. Loral TerraCom (now part of L-3 Communications) was awarded a USD11.1 million contract for 34 AN/MRC-142s in January 1990. At that time the expectation was that up to 500 sets would ultimately be required.The MRC-142, designated SC190 by Loral, is a specially adapted version of the Tadiran GRC-400 mobile digital radio relay system and is normally installed in the back of a HMMWV. Although Loral had full design and production rights, it acted as system integrator for the Marine Corps contract and has retained Tadiran as a subcontractor. Tadiran reports that over 1,000 GRC-408 radios were integrated in the DWTS project. Subsequently, the Canadian Marconi Company provided the Band 3 radio subsystem portion of the DWTS for installation on board ship. This consists of an upgraded version of the AN/GRC-226 tactical radio.

The complete article appears in the following publication:
Publication Title Jane's Military Communications
Publication date Feb 02, 2011
Section Systems
Publication synopsis Jane's Military Communications provides all the details you need on the latest advances in communications systems and equipment designed for, and fielded by, armed forces around the world. This authoritative resource contains detailed descriptions of each system's development programme, its operating parameters, how it works in battlefield conditions, its capacity to integrate with other systems, plus, frequencies, transmission rates, dimensions, power supply and environmental performance, giving you the most comprehensive military communications information resource available.
The depth and breadth of information covers
  • Tactical and ground-based communications
  • Terrestrial microwave and tropospheric scatter
  • Naval, air force and satellite communications systems and equipment
  • Line and transmission systems
  • Data, text, audio and facsimile
  • Surveillance and signal analysis
  • Encryption and security
  • Direction-finding and jamming
  • Laser, optical and video
Different sections provide in-depth detail covering
  • Air Force Communications
  • An Numbered Communications Equipment
  • Analysis
  • Audio
  • Contractors
  • Data And Text
  • Designation Of Radio Emissions
  • Direction-Finding
  • Encryption And Security
  • Facsimile
  • Frequency Bands And Designations
  • Glossary
  • Ground-Based Communications
  • Jamming And Miscellaneous
  • Laser, Optical And Video
  • Line And Transmission Systems
  • Naval Systems And Equipment
  • Satellite Systems And Equipment
  • Surveillance And Signal Analysis
  • Systems
  • Tactical Communications
  • Terrestrial Microwave And Tropospheric Scatter

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