Amateur Radio Extra Class (Element 4) [#0001]

47 Questions | Total Attempts: 49

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Amateur Radio Extra Class (Element 4) [#0001] - Quiz

Practice Examination for a FCC issued Amateur Radio Extra Class license (2008-2012 question pool). Class members are required to enter their callsign in the box labeled "Your Name" (appearing below) for homework credit.


Questions and Answers
  • 1. 
    What is meant by automatic control of a station?
    • A. 

      The use of devices and procedures for control so that the control operator does not have to be present at a control point

    • B. 

      A station operating with its output power controlled automatically

    • C. 

      Remotely controlling a station's antenna pattern through a directional control link

    • D. 

      The use of a control link between a control point and a locally controlled station

  • 2. 
    What is the only emission type permitted to be transmitted on the 60 meter band by an amateur station?
    • A. 

      CW

    • B. 

      RTTY Frequency shift keying

    • C. 

      Single sideband, upper sideband only

    • D. 

      Single sideband, lower sideband only

  • 3. 
    What is the minimum number of qualified VEs required to administer an Element 4 amateur operator license examination?
    • A. 

      5

    • B. 

      2

    • C. 

      4

    • D. 

      3

  • 4. 
    What is the amateur-satellite service?
    • A. 

      A radio navigation service using satellites for the purpose of self-training, intercommunication and technical studies carried out by amateurs

    • B. 

      A spacecraft launching service for amateur-built satellites

    • C. 

      A radio communications service using amateur stations on satellites

    • D. 

      A radio communications service using stations on Earth satellites for weather information gathering

  • 5. 
    What is the Radio Amateur Civil Emergency Service (RACES)?
    • A. 

      A radio service using amateur service frequencies on a regular basis for communications that can reasonably be furnished through other radio services

    • B. 

      A radio service of amateur stations for civil defense communications during periods of local, regional, or national civil emergencies

    • C. 

      A radio service using amateur service frequencies for broadcasting to the public during periods of local, regional or national civil emergencies

    • D. 

      A radio service using local government frequencies by Amateur Radio operators for civil emergency communications

  • 6. 
    Who may be the control operator of an auxiliary station?
    • A. 

      Any licensed amateur operator

    • B. 

      Only Technician, General, Advanced or Amateur Extra Class operators

    • C. 

      Only General, Advanced or Amateur Extra Class operators

    • D. 

      Only Amateur Extra Class operators

  • 7. 
    How should you generally sign your call when attempting to contact a DX station working a "pileup" or in a contest?
    • A. 

      Send your full call sign once or twice

    • B. 

      Send only the last two letters of your call sign until you make contact

    • C. 

      Send your full call sign and grid square

    • D. 

      Send the call sign of the DX station three times, the words "this is", then your call sign three times

  • 8. 
    On which of the following frequencies is one likely to find FMTV transmissions?
    • A. 

      14.230 MHz

    • B. 

      29.6 MHz

    • C. 

      52.525 MHz

    • D. 

      1255 MHz

  • 9. 
    Which of the following HF digital modes uses variable-length coding for bandwidth efficiency?
    • A. 

      RTTY

    • B. 

      PACTOR

    • C. 

      MT63

    • D. 

      PSK31

  • 10. 
    What is the orbital period of a satellite?
    • A. 

      The point of maximum height of a satellite's orbit

    • B. 

      The point of minimum height of a satellite's orbit

    • C. 

      The time it takes for a satellite to complete one revolution around the Earth

    • D. 

      The time it takes for a satellite to travel from perigee to apogee

  • 11. 
    When scheduling EME contacts, which of these conditions will generally result in the least path loss?
    • A. 

      When the moon is at perigee

    • B. 

      When the moon is full

    • C. 

      When the moon is at apogee

    • D. 

      When the MUF is above 30 MHz

  • 12. 
    From the contiguous 48 states, in which approximate direction should an antenna be pointed to take maximum advantage of auroral propagation?
    • A. 

      South

    • B. 

      North

    • C. 

      East

    • D. 

      West

  • 13. 
    What is the cause of gray-line propagation?
    • A. 

      At midday, the sun, being directly overhead, superheats the ionosphere causing increased refraction of radio waves

    • B. 

      At twilight, solar absorption drops greatly, while atmospheric ionization is not weakened enough to reduce the MUF

    • C. 

      At darkness, solar absorption drops greatly, while atmospheric ionization remains steady

    • D. 

      At mid afternoon, the sun heats the ionosphere, increasing radio wave refraction and the MUF

  • 14. 
    Which of the following procedures is an important precaution to follow when connecting a spectrum analyzer to a transmitter output?
    • A. 

      Use high quality double shielded coaxial cables to reduce signal losses

    • B. 

      Attenuate the transmitter output going to the spectrum analyzer

    • C. 

      Match the antenna to the load

    • D. 

      All of these choices are correct

  • 15. 
    What does the MDS of a receiver represent?
    • A. 

      The meter display sensitivity

    • B. 

      The minimum discernible signal

    • C. 

      The multiplex distortion stability

    • D. 

      The maximum detectable spectrum

  • 16. 
    What is the significance of voltmeter sensitivity expressed in ohms per volt?
    • A. 

      The full scale reading of the voltmeter multiplied by its ohms per volt rating will provide the input impedance of the voltmeter

    • B. 

      When used as a galvanometer, the reading in volts multiplied by the ohms/volt will determine the power drawn by the device under test

    • C. 

      When used as an ohmmeter, the reading in ohms divided by the ohms/volt will determine the voltage applied to the circuit

    • D. 

      When used as an ammeter, the full scale reading in amps divided by ohms/volt will determine the size of shunt needed

  • 17. 
    How can intermodulation interference between two repeaters occur?
    • A. 

      When the repeaters are in close proximity and the signals cause feedback in one or both transmitter final amplifiers

    • B. 

      When the repeaters are in close proximity and the signals mix in one or both transmitter final amplifiers

    • C. 

      When the signals from the transmitters are reflected out of phase from airplanes passing overhead

    • D. 

      When the signals from the transmitters are reflected in phase from airplanes passing overhead

  • 18. 
    How many watts are consumed in a circuit having a power factor of 0.6 if the input is 200V AC at 5 amperes?
    • A. 

      200 watts

    • B. 

      1000 watts

    • C. 

      1600 watts

    • D. 

      600 watts

  • 19. 
    How long does it take for an initial charge of 20 V DC to decrease to 7.36 V DC in a 0.01-microfarad capacitor when a 2-megohm resistor is connected across it?
    • A. 

      0.02 seconds

    • B. 

      0.04 seconds

    • C. 

      20 seconds

    • D. 

      40 seconds

  • 20. 
    What is the phase relationship between the current through and the voltage across a parallel resonant circuit?
    • A. 

      The voltage leads the current by 90 degrees

    • B. 

      The current leads the voltage by 90 degrees

    • C. 

      The voltage and current are in phase

    • D. 

      The voltage and current are 180 degrees out of phase

  • 21. 
    In polar coordinates, what is the impedance of a network consisting of a 300-ohm-reactance capacitor, a 600-ohm-reactance inductor, and a 400-ohm resistor, all connected in series?
    • A. 

      500 ohms at an angle of 37 degrees

    • B. 

      900 ohms at an angle of 53 degrees

    • C. 

      400 ohms at an angle of 0 degrees

    • D. 

      1300 ohms at an angle of 180 degrees

  • 22. 
    What type of semiconductor device varies its internal capacitance as the voltage applied to its terminals varies?
    • A. 

      Varactor diode

    • B. 

      Tunnel diode

    • C. 

      Silicon-controlled rectifier

    • D. 

      Zener diode

  • 23. 
    Which of these filter bandwidths would be a good choice for use with standard double-sideband AM transmissions?
    • A. 

      1 kHz at -6 dB

    • B. 

      500 Hz at -6 dB

    • C. 

      6 kHz at -6 dB

    • D. 

      15 kHz at -6 dB

  • 24. 
    What is a liquid-crystal display (LCD)?
    • A. 

      A modern replacement for a quartz crystal oscillator which displays its fundamental frequency

    • B. 

      A display that uses a crystalline liquid to change the way light is refracted

    • C. 

      A frequency-determining unit for a transmitter or receiver

    • D. 

      A display that uses a glowing liquid to remain brightly lit in dim light

  • 25. 
    What happens to the conductivity of a photoconductive material when light shines on it?
    • A. 

      It increases

    • B. 

      It decreases

    • C. 

      It stays the same

    • D. 

      It becomes unstable

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