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