3D153 Vol 1 Unit 2

Card Set Information

3D153 Vol 1 Unit 2
2014-01-02 20:10:20
cdc 3d153 rf transmissions

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  1. what initial nuclear radiation elements generate electromagnetic pulses?
    gamma rays and neutrons
  2. High-altitude electromagnetic pulse is what type of frequency phenomenon, and involves which frequency range?
    wideband; 1 hertz to 1 gigahertz
  3. a system-generated electromagnetic pulse is a problem for satellites and reentry vehicles that are
    susceptible to the wideband frequency phenomenon
  4. which distinct region of the source region electromagnetic pulse is produced by the interactions between the weapon products and  the earth's atmosphere?
  5. what electromagnetic pulse region is the principal threat to electronic systems by cable?
  6. how does scintillation effects communications?
    transmitted signal fading caused by multiple path propagation through the structured plasma field
  7. atmospheric disturbances from initial nuclear radiation on higher frequencies affect communications by which types of effects?
  8. which one of the following statements are true concerning shielding?
    sensitive equipment will be located within the shielded barrier
  9. what is the purpose of bonding?
    to ensure a mechanically strong, low impedance interconnection between metal objects
  10. which types of filters are always used in combination with surge arresters?
  11. if the interference can be eliminated by disconnection the receiving antenna, the source of the disturbance is most likely
    external to the radio
  12. what is an example of intentionally induced electromagnetic interference (EMI)?
  13. what type of electromagnetic interference occurs when a receiver responds to off-frequency signals?
  14. what type of equipment often generates many spurious emissions?
    rapid tuning receiver
  15. what man-made noise results from voltage surges, arcing, or corona discharges?
    power line
  16. how can you normally eliminate electromagnetic interference noise bursts caused by sodium and mercury vapor lights that have stopped working while the power is still applied
    change the bulb
  17. what air force program is used to resolve an electromagnetic interference incidentj?
    spectrum interference resolution
  18. at what level does the air force want electromagnetic interference problems resolved?
    spectrum interference resolution office
  19. what is the first step in the air force spectrum interference resolution program?
    reporting the interference
  20. what do you do when you are reasonably sure EMI exists?
    contact the spectrum interference resolution office
  21. who is initially responsible for reporting an electromagnetic interference (EMI)?
    the operator
  22. which air force service provides on-site direction finding and interference problem analysis?
    quick fix interference reduction capability
  23. what program addresses persistent and recurring interference's problems in joint operations?
    joint spectrum interference resolution
  24. who is tasked to provide interference resolution support to the unified commanders?
    joint spectrum center