Practice Exam

G9A11

1. What is the effect of transmission line loss on SWR measured at the input to the line?

• A. Higher loss reduces SWR measured at the input to the line
• B. Higher loss increases SWR measured at the input to the line
• C. Transmission line loss does not affect the SWR measurement
• D. Higher loss increases the accuracy of SWR measured at the input to the line

G6A03

2. What is the approximate forward threshold voltage of a germanium diode?

• A. 0.3 volts
• B. 0.7 volts
• C. 1.0 volts
• D. 0.1 volt

G9B02

3. Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

• A. Slope the radials downward
• B. Lengthen the radials beyond one wavelength
• C. Slope the radials upward
• D. Coil the radials

G3A04

4. Which of the following are the least reliable bands for long-distance communications during periods of low solar activity?

• A. 30 meters and 20 meters
• B. 80 meters and 160 meters
• C. 15 meters, 12 meters, and 10 meters
• D. 60 meters and 40 meters

G7C01

5. What circuit is used to select one of the sidebands from a balanced modulator?

• A. RF amplifier
• B. Filter
• C. Carrier oscillator
• D. IF amplifier

G5C12

6. What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

• A. 1,000 microfarads
• B. 14.3 microfarads
• C. 70 microfarads
• D. 0.07 microfarads

G0A10

7. What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

• A. All these choices are correct
• B. Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
• C. Change to a non-polarized antenna with higher gain
• D. Use an antenna with a higher front-to-back ratio

G4D10

8. How close to the lower edge of a band's phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

• A. At least 3 kHz below the edge of the segment
• B. At least 1 kHz above the edge of the segment
• C. At least 3 kHz above the edge of the segment
• D. At least 1 kHz below the edge of the segment

G7B07

9. Which of the following are basic components of a sine wave oscillator?

• A. A circulator and a filter operating in a feed-forward loop
• B. A filter and an amplifier operating in a feedback loop
• C. An amplifier and a divider
• D. A frequency multiplier and a mixer

G8A06

10. Which of the following is characteristic of QPSK31?

• A. Its bandwidth is approximately the same as BPSK31
• B. All these choices are correct
• C. Its encoding provides error correction
• D. It is sideband sensitive

G1B03

11. Which of the following is a purpose of a beacon station as identified in the FCC rules?

• A. Observation of propagation and reception
• B. Automatic identification of repeaters
• C. All these choices are correct
• D. Transmission of bulletins of general interest to amateur radio licensees

G9C09

12. In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

• A. Approximately 3 dB higher
• B. Approximately 1.5 dB higher
• C. Approximately 9 dB higher
• D. Approximately 6 dB higher

G1A09

13. Which of the following frequencies is within the General class portion of the 15-meter band?

• A. 18155 kHz
• B. 24900 kHz
• C. 14250 kHz
• D. 21300 kHz

G3B09

14. What is the approximate maximum distance along the Earth's surface normally covered in one hop using the F2 region?

• A. 12,000 miles
• B. 2,500 miles
• C. 1,200 miles
• D. 180 miles

G4C10

15. What could be a symptom caused by a ground loop in your station's audio connections?

• A. An item of station equipment starts to draw excessive amounts of current
• B. You receive reports of "hum" on your station's transmitted signal
• C. You receive reports of harmonic interference from your station
• D. The SWR reading for one or more antennas is suddenly very high

G2C10

16. What does the Q signal "QRN" mean?

• A. I am troubled by static
• B. Send more slowly
• C. Zero beat my signal
• D. Stop sending

G5A04

17. Which of the following is opposition to the flow of alternating current in a capacitor?

• A. Conductance
• B. Admittance
• C. Reactance
• D. Reluctance

G6B10

18. How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

• A. By creating an impedance in the current's path
• B. It converts common-mode current to differential mode current
• C. Ferrites expel magnetic fields
• D. By creating an out-of-phase current to cancel the common-mode current

G0B08

19. What should be done before climbing a tower that supports electrically powered devices?

• A. Unground the base of the tower
• B. Make sure all circuits that supply power to the tower are locked out and tagged
• C. Notify the electric company that a person will be working on the tower
• D. All these choices are correct

G2E05

20. What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

• A. USB
• B. DSB
• C. LSB
• D. SSB

G8B06

21. What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

• A. 16 kHz
• B. 8 kHz
• C. 5 kHz
• D. 3 kHz

G4E02

22. What is the purpose of a corona ball on an HF mobile antenna?

• A. To increase the "Q" of the antenna
• B. To narrow the operating bandwidth of the antenna
• C. To reduce the chance of damage if the antenna should strike an object
• D. To reduce RF voltage discharge from the tip of the antenna while transmitting

G4A11

23. Why should the ALC system be inactive when transmitting AFSK data signals?

• A. All these choices are correct
• B. When using digital modes, too much ALC activity can cause the transmitter to overheat
• C. ALC will invert the modulation of the AFSK mode
• D. The ALC action distorts the signal

G8C12

24. Which type of code is used for sending characters in a PSK31 signal?

• A. Varicode
• B. Volumetric
• C. Binary
• D. Viterbi

G1D02

25. What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

• A. None, only Amateur Extra class licensees may be accredited
• B. General and Technician
• C. Technician only
• D. Amateur Extra, General, and Technician

G2D06

26. How is a directional antenna pointed when making a "long-path" contact with another station?

• A. Along the gray line
• B. Toward the rising sun
• C. Toward the north
• D. 180 degrees from the station's short-path heading

G3C04

27. What does the term "critical angle" mean, as applied to radio wave propagation?

• A. The long path azimuth of a distant station
• B. The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
• C. The short path azimuth of a distant station
• D. The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions

G2A05

28. Which mode of voice communication is most commonly used on the HF amateur bands?

• A. Single sideband
• B. Frequency modulation
• C. Double sideband
• D. Single phase modulation

G1C06

29. What is the limit for transmitter power on the 1.8 MHz band?

• A. 1500 watts PEP output
• B. 200 watts PEP output
• C. 1000 watts PEP output
• D. 1200 watts PEP output

G9D08

30. How does a "screwdriver" mobile antenna adjust its feed point impedance?

• A. By varying its body capacitance
• B. By deploying a capacitance hat
• C. By extending and retracting the whip
• D. By varying the base loading inductance

G4B09

31. When is an analog multimeter preferred to a digital multimeter?

• A. When measuring the frequency of an oscillator
• B. When high precision is desired
• C. When adjusting circuits for maximum or minimum values
• D. When testing logic circuits

G5B14

32. What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

• A. 2500 watts
• B. 5000 watts
• C. 8.75 watts
• D. 625 watts

G7A02

33. Which of the following components are used in a power supply filter network?

• A. Transformers and transducers
• B. Capacitors and inductors
• C. All these choices are correct
• D. Diodes

G2B04

34. When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

• A. 150 Hz to 500 Hz
• B. 5 Hz to 50 Hz
• C. 1 kHz to 3 kHz
• D. 3 kHz to 6 kHz

G1E04

35. Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

• A. When using a band where the Amateur Service is secondary
• B. When operating within one mile of an FCC Monitoring Station
• C. All these choices are correct
• D. When a station is transmitting spread spectrum emissions