Practice Exam

G9D04

1. What is the primary function of antenna traps?

• A. To notch spurious frequencies
• B. To provide balanced feed point impedance
• C. To enable multiband operation
• D. To prevent out-of-band operation

G1B09

2. On what HF frequencies are automatically controlled beacons permitted?

• A. On any frequency if transmissions are in Morse code
• B. On any frequency if power is less than 1 watt
• C. 28.20 MHz to 28.30 MHz
• D. 21.08 MHz to 21.09 MHz

G4C03

3. What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

• A. On-and-off humming or clicking
• B. Clearly audible speech
• C. A steady hum whenever the transmitter is on the air
• D. Distorted speech

G6A03

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

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

G1D08

5. Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

• A. The person must hold an FCC granted amateur radio license of General class or above
• B. None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
• C. The person's home citizenship must be in ITU region 2
• D. The person must be a resident of the US for a minimum of 5 years

G4B07

6. What signals are used to conduct a two-tone test?

• A. Two swept frequency tones
• B. Two audio frequency range square wave signals of equal amplitude
• C. Two audio signals of the same frequency shifted 90 degrees
• D. Two non-harmonically related audio signals

G3A04

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

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

G6B07

8. Which of the following describes a type N connector?

• A. A low noise figure VHF connector
• B. A nickel plated version of the PL-259
• C. A small bayonet connector used for data circuits
• D. A moisture-resistant RF connector useful to 10 GHz

G8B06

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

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

G2C08

10. What prosign is sent to indicate the end of a formal message when using CW?

• A. KN
• B. BK
• C. SK
• D. AR

G7A06

11. What portion of the AC cycle is converted to DC by a full-wave rectifier?

• A. 90 degrees
• B. 270 degrees
• C. 360 degrees
• D. 180 degrees

G4E07

12. Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

• A. The fuel delivery system
• B. All these choices are correct
• C. The control computers
• D. The battery charging system

G9C11

13. What is a beta or hairpin match?

• A. A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
• B. A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
• C. A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
• D. A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching

G4A10

14. What is the function of an electronic keyer?

• A. Automatic transmit/receive switching
• B. Computer interface for PSK and RTTY operation
• C. To allow time for switching the antenna from the receiver to the transmitter
• D. Automatic generation of dots and dashes for CW operation

G5A10

15. Which of the following devices can be used for impedance matching at radio frequencies?

• A. All these choices are correct
• B. A transformer
• C. A Pi-network
• D. A length of transmission line

G2B07

16. Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

• A. Identify your station by transmitting your call sign at least 3 times
• B. Follow the voluntary band plan
• C. Listen on the frequency for at least two minutes to be sure it is clear
• D. All these choices are correct

G7B03

17. Which of the following describes the function of a two-input AND gate?

• A. Output is high only when both inputs are high
• B. Output is low only when both inputs are high
• C. Output is low when either or both inputs are high
• D. Output is high when either or both inputs are low

G5C09

18. What is the capacitance of three 100-microfarad capacitors connected in series?

• A. 3.0 microfarads
• B. 33.3 microfarads
• C. 0.33 microfarads
• D. 300 microfarads

G8A05

19. What type of modulation varies the instantaneous power level of the RF signal?

• A. Power modulation
• B. Frequency modulation
• C. Phase modulation
• D. Amplitude modulation

G1E04

20. 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 a station is transmitting spread spectrum emissions
• C. All these choices are correct
• D. When operating within one mile of an FCC Monitoring Station

G8C15

21. What does an FT8 signal report of +3 mean?

• A. The signal is 3 times the noise level of an equivalent SSB signal
• B. The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
• C. The signal is S3 (weak signals)
• D. The signal is 3 dB over S9

G9B03

22. Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

• A. Omnidirectional in azimuth
• B. Bi-directional in azimuth
• C. Isotropic
• D. Hemispherical

G7C12

23. What is the frequency above which a low-pass filter's output power is less than half the input power?

• A. Notch frequency
• B. Neper frequency
• C. Cutoff frequency
• D. Rolloff frequency

G3B07

24. What does LUF stand for?

• A. Lowest Usable Frequency for communications to any point outside a 100-mile radius
• B. The Lowest Usable Frequency for communications between two specific points
• C. The Lowest Usable Frequency during a 24-hour period
• D. Lowest Usable Frequency during the past 60 minutes

G9A08

25. If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

• A. 5:1
• B. 1:1
• C. Between 1:1 and 5:1 depending on the reflected power at the transmitter
• D. Between 1:1 and 5:1 depending on the characteristic impedance of the line

G2E07

26. Which of the following is required when using FT8?

• A. Receiver attenuator set to -12 dB
• B. A vertically polarized antenna
• C. Computer time accurate to within approximately 1 second
• D. A special hardware modem

G5B04

27. How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

• A. 2.4 watts
• B. 24 watts
• C. 60 watts
• D. 6 watts

G1C06

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

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

G4D09

29. What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

• A. 14.347 MHz to 14.350 MHz
• B. 14.347 MHz to 14.647 MHz
• C. 14.3455 MHz to 14.3485 MHz
• D. 14.344 MHz to 14.347 MHz

G2D05

30. Which of the following indicates that you are looking for an HF contact with any station?

• A. Say "QTC" followed by "this is" and your call sign -- if no answer, change frequency and repeat
• B. Sign your call sign once, followed by the words "listening for a call" -- if no answer, change frequency and repeat
• C. Repeat "CQ" a few times, followed by "this is," then your call sign a few times, then pause to listen, repeat as necessary
• D. Transmit an unmodulated carried for approximately 10 seconds, followed by "this is" and your call sign, and pause to listen -- repeat as necessary

G0A12

31. What stations are subject to the FCC rules on RF exposure?

• A. All stations with a time-averaged transmission of more than one milliwatt
• B. Only stations with antennas lower than one wavelength above the ground
• C. All commercial stations; amateur radio stations are exempt
• D. Only stations transmitting more than 500 watts PEP

G0B01

32. Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

• A. Only the neutral wire
• B. Only the ground wire
• C. All wires
• D. Only the hot wires

G2A02

33. Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

• A. Upper sideband
• B. Lower sideband
• C. Suppressed sideband
• D. Double sideband

G1A10

34. What portion of the 10-meter band is available for repeater use?

• A. The portion between 28.3 MHz and 28.5 MHz
• B. The portion above 29.5 MHz
• C. The portion between 28.1 MHz and 28.2 MHz
• D. The entire band

G3C05

35. Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

• A. The F region is unstable during daylight hours
• B. The D region absorbs signals at these frequencies during daylight hours
• C. The F region absorbs signals at these frequencies during daylight hours
• D. The E region is unstable during daylight hours