JEM Gains SATCOM Access Via Software Upgrade

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AN/PRC-148 JEM

Thales Communications Inc. (the US subsidiary of the Thales Group) is now certified to offer the Ultra High Frequency (UHF) SATCOM integrated Waveform (IW) with its AN/PRC-148 Joint Tactical Radio System (JTRS) Enhanced Multiband Inter/Intra Team Radio (MBITR), also known as ‘JEM’. SATCOM IW capability eliminates the need for warfighters to carry their existing heavy, manpack tactical radio systems, and enables each member of the team to deploy with a fully-interoperable, beyond line-of-sight (BLOS) capability. Users can now access SATCOM IW on their fielded AN/PRC-148 JEMs via software upgrade, producing minimal impact on deployed radios and requiring minimal operator intervention. The IW upgrade will provide both commanders and users with increased voice quality, higher data throughput, improved user HMI, and increased command and control capability on the battlefield, all in a smaller, lighter package.


As the demand for SATCOM has increased in current operations around the world, SATCOM IW (MIL-STD-188-181C, 188-182B, and 188-183B) offers a significant increase in capacity over legacy Demand Assigned Multiple Access (DAMA) SATCOM. UHF SATCOM enables users to operate globally on-the-move and under both severe weather conditions and cluttered ground cover. SATCOM IW, developed by the U.S. Defense Information Systems Agency (DISA), doubles UHF SATCOM capacity of existing communications services employing Time Division Multiple Access (TDMA) methods. The use of Mixed Excitation Linear Predictive (MELP) voice encoding improves overall voice quality.

SATCOM Integrated Waveform (IW) (MIL-STD-188-181C, 188-182B, and 188-183B) offers a significant increase in capacity over legacy Demand Assigned Multiple Access (DAMA) SATCOM. SATCOM IW, developed by the U.S. Defense Information Systems Agency (DISA), doubles UHF SATCOM capacity of existing communications services employing Time Division Multiple Access (TDMA) methods. The use of Mixed Excitation Linear Predictive (MELP) voice encoding improves overall voice quality. Additionally, SATCOM IW is faster and easier to set up through a more intuitive human-machine interface (HMI).
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A new software update transforms every AN/PRC-148 MBITR JTRS set (JEM) into a Satellite Communications system, supporting global reach. Photo: Thales CommunicationsAN/PRC-148 JEM