Vol3 CDC 3D153 Ure1

15 Questions | Total Attempts: 224

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CDC Quizzes & Trivia

This is to be used as a study in the 3D153 CDC test.


Questions and Answers
  • 1. 
    (401) When using space diversity, the AN/TRC–170 receive antenna spacing should be a minimum of?
    • A. 

      10 Wavelengths apart

    • B. 

      25 Wavelengths apart

    • C. 

      50 Wavelengths apart

    • D. 

      100 Wavelengths apart

  • 2. 
    (401) Which type of diversity requires two antennas, two receivers, and two transmitters?
    • A. 

      Polarization

    • B. 

      Crossband

    • C. 

      Frequency

    • D. 

      Space

  • 3. 
    (401) In an AN/TRC–170 terminal, the quantity of digital group multiplexer units supplied and their application are?
    • A. 

      Different in the V2 and V3 systems

    • B. 

      Identical in the V2 and V3 systems

    • C. 

      Dependent on the mission and number of channels

    • D. 

      Dependent on the deployment of the technical control

  • 4. 
    (401) The MD–1026 digital data modem can interface up to four groups of?
    • A. 

      Balanced non-return-to-zero (NRZ) signals

    • B. 

      Conditioned diphase signals

    • C. 

      Unbalanced NRZ signals

    • D. 

      Isochronous signals

  • 5. 
    (401) Which type of encryption device does full-duplex encryption of AN/TRC–170’s group or supergroup mission traffic?
    • A. 

      KY-68 digiital secure voice terminal/phone

    • B. 

      KY-58 VINSON encryption device

    • C. 

      KG-84 dedicated loop encryption device

    • D. 

      KG-81 trunk encryption device

  • 6. 
    (401) Digital voice orderwire traffic that originates at the AN/TRC–170’s voice orderwire control unit is encrypted by the?
    • A. 

      KY-68 digital secure voice terminal/phone

    • B. 

      KY-58 VINSON encryption device

    • C. 

      KG-84 dedicated loop encryption device

    • D. 

      KG-81 trunk encryption device

  • 7. 
    (401) Which jack field in the AN/TRC–170’s baseband patch panel provides timing and data connections?
    • A. 

      Middle

    • B. 

      Center

    • C. 

      Upper

    • D. 

      Lower

  • 8. 
    (401) The tropospheric scatter modem processes mission traffic at data rates of 128 through 4,096 Kbps in the?
    • A. 

      512 Kbps data rate family

    • B. 

      576 Kbps data rate family

    • C. 

      1,024 Kbps data rate family

    • D. 

      1,152 Kbps data rate family

  • 9. 
    (401) Which unit in the AN/TRC–170 terminal contains the rubidium standard?
    • A. 

      Electrical frequency synthesizer.

    • B. 

      Frequency subsystem unit.

    • C. 

      Tropospheric scatter modem.

    • D. 

      Transmitter-amplifier converter.

  • 10. 
    (401) The quick reaction antenna for the V3 AN/TRC–170 terminal uses
    • A. 

      Two 6-foot-diameter, linearly dual-polarized antennas.

    • B. 

      Four 6-foot-diameter, linearly dual-polarized antennas.

    • C. 

      Two 9.5-foot-diameter, linearly dual-polarized antennas.

    • D. 

      Four 9.5-foot-diameter, linearly dual-polarized antennas.

  • 11. 
    (402) The Tropo/Satellite Support Radio frequency coverage extends from?
    • A. 

      4.4 to 5.25 GHz.

    • B. 

      7.25 to 8.4 GHz.

    • C. 

      14.4 to 15.25 GHz.

    • D. 

      17.25 to 18.4 GHz

  • 12. 
    (402) The maximum distance a Tropo/Satellite Support Radio can operate with the 2-foot antenna is?
    • A. 

      10 miles

    • B. 

      25 miles

    • C. 

      100 miles

    • D. 

      250 miles

  • 13. 
    (402) In the Tropo/Satellite Support Radio’s baseband assembly, a 1-volt peak-to-peak input signal results in how much frequency deviation in the transmitter?
    • A. 

      ±4 MHz.

    • B. 

      Less than ±4 MHz.

    • C. 

      More than ±4 MHz.

    • D. 

      No signal deviation

  • 14. 
    (402) In the Tropo/Satellite Support Radio frequency assembly, what permits the transmitter and receiver to be connected to the same antenna?
    • A. 

      Circulator

    • B. 

      Combiner.

    • C. 

      Coupler.

    • D. 

      Hybrid.

  • 15. 
    (402) What is the intermediate frequency of the Tropo/Satellite Support Radio?
    • A. 

      70 MHz with a 10 MHz bandpass.

    • B. 

      70 MHz with a 20 MHz bandpass.

    • C. 

      700 MHz with a 10 MHz bandpass.

    • D. 

      700 MHz with a 20 MHz bandpass.

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