Practice Exam

G0B09

1. Which of the following is true of an emergency generator installation?

• A. The generator should be operated in a well-ventilated area
• B. All these choices are correct
• C. Fuel should be stored near the generator for rapid refueling in case of an emergency
• D. The generator must be insulated from ground

G1C02

2. What is the maximum transmitter power an amateur station may use on the 12-meter band?

• A. 200 watts PEP output
• B. 1500 watts PEP output
• C. An effective radiated power equivalent to 100 watts from a half-wave dipole
• D. 50 watts PEP output

G2D06

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

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

G4D06

4. How much change in signal strength is typically represented by one S unit?

• A. 18 dB
• B. 6 dB
• C. 15 dB
• D. 12 dB

G2A05

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

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

G4A03

6. How does a noise blanker work?

• A. By temporarily increasing received bandwidth
• B. By clipping noise peaks
• C. By reducing receiver gain during a noise pulse
• D. By redirecting noise pulses into a filter capacitor

G3C11

7. Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

• A. The F1 region
• B. The F2 region
• C. The E region
• D. The D region

G9B03

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

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

G4E05

9. Which of the following most limits an HF mobile installation?

• A. FCC rules limiting mobile output power on the 75-meter band
• B. "Picket fencing"
• C. Efficiency of the electrically short antenna
• D. The wire gauge of the DC power line to the transceiver

G2B05

10. When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

• A. 5 Hz to 50 Hz
• B. 150 Hz to 500 Hz
• C. 2 kHz to 3 kHz
• D. Approximately 6 kHz

G8A06

11. Which of the following is characteristic of QPSK31?

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

G3A01

12. How does a higher sunspot number affect HF propagation?

• A. Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
• B. Lower sunspot numbers generally indicate greater probability of sporadic E propagation
• C. A zero sunspot number indicates undisturbed conditions
• D. A zero sunspot number indicates that radio propagation is not possible on any band

G5B06

13. What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

• A. 100 watts
• B. 353.5 watts
• C. 1.4 watts
• D. 400 watts

G9D07

14. Which of the following describes a log-periodic antenna?

• A. Gain varies logarithmically as a function of frequency
• B. Impedance varies periodically as a function of frequency
• C. SWR varies periodically as a function of boom length
• D. Element length and spacing vary logarithmically along the boom

G5C03

15. What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

• A. 17 ohms
• B. 5.9 ohms
• C. 0.17 ohms
• D. 80 ohms

G9A02

16. What is the relationship between high standing wave ratio (SWR) and transmission line loss?

• A. High SWR makes it difficult to measure transmission line loss
• B. There is no relationship between transmission line loss and SWR
• C. High SWR increases loss in a lossy transmission line
• D. High SWR reduces the relative effect of transmission line loss

G2C01

17. Which of the following describes full break-in CW operation (QSK)?

• A. Breaking stations send the Morse code prosign "BK"
• B. An operator must activate a manual send/receive switch before and after every transmission
• C. Transmitting stations can receive between code characters and elements
• D. Automatic keyers, instead of hand keys, are used to send Morse code

G5A11

18. What letter is used to represent reactance?

• A. Z
• B. Y
• C. B
• D. X

G1A11

19. When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

• A. The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
• B. The upper frequency portion
• C. The lower frequency portion
• D. The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz

G0A09

20. What type of instrument can be used to accurately measure an RF field strength?

• A. A calibrated field strength meter with a calibrated antenna
• B. An oscilloscope with a high-stability crystal marker generator
• C. A receiver with digital signal processing (DSP) noise reduction
• D. An SWR meter with a peak-reading function

G8B07

21. What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

• A. 60 kHz
• B. 416.7 Hz
• C. 5 kHz
• D. 101.75 Hz

G6A12

22. What is the primary purpose of a screen grid in a vacuum tube?

• A. To decrease plate resistance
• B. To increase the control grid resistance
• C. To increase efficiency
• D. To reduce grid-to-plate capacitance

G6B12

23. Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

• A. Type N
• B. BNC
• C. PL-259
• D. RCA Phono

G1B10

24. What is the power limit for beacon stations?

• A. 10 watts PEP output
• B. 20 watts PEP output
• C. 100 watts PEP output
• D. 200 watts PEP output

G3B04

25. Which of the following is a way to determine current propagation on a desired band from your station?

• A. Use a network of automated receiving stations on the internet to see where your transmissions are being received
• B. Check the A-index
• C. Send a series of dots and listen for echoes
• D. All these choices are correct

G9C10

26. Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

• A. The physical length of the boom
• B. All these choices are correct
• C. The spacing of each element along the boom
• D. The number of elements on the boom

G7A13

27. Which symbol in Figure G7-1 represents a tapped inductor?

• A. Symbol 1
• B. Symbol 7
• C. Symbol 6
• D. Symbol 11

G4B09

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

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

G7B09

29. What determines the frequency of an LC oscillator?

• A. The number of stages in the divider
• B. The number of stages in the counter
• C. The time delay of the lag circuit
• D. The inductance and capacitance in the tank circuit

G8C14

30. Which of the following describes a waterfall display?

• A. Frequency is vertical, signal strength is horizontal, time is intensity
• B. Frequency is vertical, signal strength is intensity, time is horizontal
• C. Frequency is horizontal, signal strength is intensity, time is vertical
• D. Frequency is horizontal, signal strength is vertical, time is intensity

G2E06

31. What is the most common frequency shift for RTTY emissions in the amateur HF bands?

• A. 850 Hz
• B. 85 Hz
• C. 425 Hz
• D. 170 Hz

G1E06

32. The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

• A. Region 4
• B. Region 2
• C. Region 3
• D. Region 1

G4C07

33. Why should soldered joints not be used in lightning protection ground connections?

• A. Solder flux will prevent a low conductivity connection
• B. Solder has too high a dielectric constant to provide adequate lightning protection
• C. All these choices are correct
• D. A soldered joint will likely be destroyed by the heat of a lightning strike

G1D01

34. Who may receive partial credit for the elements represented by an expired amateur radio license?

• A. Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
• B. Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
• C. Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
• D. Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

G7C11

35. Which of these functions is performed by software in a software-defined radio (SDR)?

• A. Modulation
• B. Detection
• C. All these choices are correct
• D. Filtering