Which of the following best describes MUOS?

• A. Global Broadcast System
• B. Narrowband military UHF SATCOM for worldwide mobile users
• C. Wideband high-data-rate Ka-band SATCOM
• D. Two-way medium data rate L-band

Answer: (B)

MUOS, the Mobile User Objective System, is the modernized UHF SATCOM network designed to give secure, two-way communications for worldwide mobile military users. It operates in the UHF band and uses new payloads and ground infrastructure to boost capacity, improve reliability, and support IP-based, narrowband communications for voice and data. This system replaces the legacy UHF SATCOM approach for mobile terminals on land, at sea, and in the air, enabling global reach with portable terminals. It is not a global broadcast system, not a Ka-band wideband system, and not an L-band two-way system. The description that best fits MUOS is narrowband military UHF SATCOM for worldwide mobile users.