text: Chapter 3
  * Long-haul backbone data transport and reachback to home station.
  * Transmission capabilities that span beyond line of sight distances, terrain obstructions, or hostile
  forces.
  Department of Defense Narrowband Satellite Communications Systems
  3-39. The narrowband SATCOM systems support secure voice and data transmission at relatively low data
  rates for mobile and fixed users. These systems are primarily designated to support highly mobile, tactical
  users. Compact terminal equipment and omnidirectional antennas allow deployed forces to conduct tactical
  command and control and quickly exchange both voice and data communications.
  3-40. Some Narrowband SATCOM systems have cellular-like capabilities which increases DOD
  narrowband capacity and access. These system provide worldwide, point-to-point communication to multi-
  Service organizations with fixed and mobile terminal users and allows Soldiers to connect directly to Defense
  Information Systems Network services such as to Defense Switched Network, NIPRNET, and SIPRNET.
  Department of Defense Wideband Satellite Communications Systems
  3-41. The wideband SATCOM systems support multichannel, secure voice, and high data-rate
  communications for command and control, crisis management, and intelligence data transfer services. The
  heaviest use of wideband communications is multiplexed, wideband, switched networks. Many wideband
  users employ large, fixed ground terminals to support DOD enterprise-wide voice, data, and video wideband
  networks. Small mobile and relocatable terminals support operations for high-capacity, multichannel
  communications aboard ships, aircraft, and ground forces.
  Department of Defense Protected Satellite Communications Systems
  3-42. The protected SATCOM systems support survivable voice and data communications not normally
  found on other systems. Its unique characteristics give it attributes such as anti-jam and scintillation-
  resistance along with low probability of interception or detection. Use of the protected SATCOM system has
  often been associated with strategic forces and command and control systems. Protected band capabilities
  are in demand by tactical and special forces who require anti-jam and low probability of radio transmission
  interception or detection. Systems typically operate in the extremely high frequency range.
  Commercial Satellite Communications Systems
  3-43. Commercial SATCOM might offer greater capacity which can be used to meet and augment the
  Army’s rapidly growing information needs. Some wideband services and personal communications services
  such as fixed satellite service and mobile satellite service are examples of current commercial SATCOM
  support to strategic and tactical mobile users.
  * Fixed satellite service provides invaluable support to current military operations.
  * Mobile satellite service uses Iridium and Inmarsat services to complement military SATCOM
  narrowband services to provide highly mobile communications.
  3-44. Commercial SATCOM systems are advantageous to support much of the Army’s predictable,
  wideband fixed SATCOM needs. Leasing commercial services affords the Army faster access to advanced
  commercial technologies than traditional government programs. In an environment where both the DOD and
  adversaries have similar access to advanced technologies and commercial services, sustaining military
  advantage likely rest on the DODs ability to integrate those technologies and commercial services into its
  force structure faster and more effectively than an adversary.
  3-45. Army units seeking to employ commercial SATCOM must follow all specified procedures, satellite
  access requests, appropriate reports, and satellite database numbers for each commercial satellite network.
  Army units obtain commercial SATCOM services through the Army Network Enterprise Technology
  Command and the U.S. Air Force, and must report their arrangements and expenditures for commercial
  satellite services to the headquarters, Department of the Army chief information officer or assistant chief of
  staff, signal (G-6) office. Satellite provisions obtained through the U.S. Air Force include terms and
  conditions for resolution and mitigation of electromagnetic interference and other anomalies.