ACS Final Exam

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Across
  1. 3. A medium or passageway of a data being transmitted.
  2. 4. Has become the earth’s first natural satellite and first passive satellite used by US Navy.
  3. 6. The band comprising a composite signal that modulates the FM carrier & may contain one or more voice band channels or data.
  4. 8. A type of PTN Dialing that includes the entire public switched network; that is, any service associated with a telephone number.
  5. 10. A noise caused by repeater amplitude nonlinearity & by transmission gain & delay
  6. 12. Satellite orbit in the opposite direction as Earth’s rotation or in the same direction but at an angular velocity less than that of Earth.
  7. 13. Satellite orbit in the same direction as Earth’s rotation & at an angular velocity greater than that of Earth.
  8. 14. Suggests that there is more than one transmission path or method of transmission available between a transmitter and a receiver.
  9. 18. Provides an artificial boost in amplitude to the higher baseband frequencies.
  10. 19. Synonymous to satellite’s footprint
  11. 21. A microwave receiver and transmitter placed back to back or in tandem with the system.
  12. 23. A constellation causing electrical damage to any electronic devices in space.
Down
  1. 1. Satellite that orbits in a circular pattern with an angular velocity equal to that of the earth.
  2. 2. The process of changing from 1 channel to another during a mobile call.
  3. 5. in 1880 Alexander Graham Bell experimented with this photo apparatus
  4. 7. Type of Diversity where the output of a transmitter is fed to two or more antennas.
  5. 9. A wave traversing a line of sight path
  6. 11. Another name for a switched network.
  7. 12. In cellular technology, the process of using the same carrier freq (channel) in diff cells that are geographically separated.
  8. 14. Establishing a connection to Central Office by inputting the subscriber number.
  9. 15. Satellite coverage w/ a beamwidth of approximately 17 degrees & includes coverage of approx. one-third of the earth’s surface.
  10. 16. Type of Satellite w/c uses the angular momentum of its spinning body to provide roll and yaw stabilization.
  11. 17. The device used to originate and receive telephone signals.
  12. 20. First Active satellite launched in space.
  13. 22. A satellite that simply reflects a signal back to earth; there are no gain devices on board to amplify or repeat the signal.
  14. 24. Defined as the horizontal pointing angle of an antenna. It is usually measured in a clockwise direction in degrees from true north.