Practice Exam

G3A10

1. What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

• A. Rotation of the Sun's surface layers around its axis
• B. Long term oscillations in the upper atmosphere
• C. Cyclic variation in Earth's radiation belts
• D. The position of the Moon in its orbit

G7A08

2. Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

• A. Fewer circuit components are required
• B. High-frequency operation allows the use of smaller components
• C. Faster switching time makes higher output voltage possible
• D. Inherently more stable

G8C03

3. What part of a packet radio frame contains the routing and handling information?

• A. Directory
• B. Preamble
• C. Header
• D. Trailer

G8B13

4. Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

• A. 5F1-3F2
• B. 3F1-F2
• C. 2F1-F2
• D. All these choices are correct

G1D04

5. Who must observe the administration of a Technician class license examination?

• A. At least two Volunteer Examiners of General class or higher
• B. At least three Volunteer Examiners of General class or higher
• C. At least two Volunteer Examiners of Technician class or higher
• D. At least three Volunteer Examiners of Technician class

G3C11

6. 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 D region
• D. The E region

G3B09

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

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

G4C02

8. Which of the following could be a cause of interference covering a wide range of frequencies?

• A. Arcing at a poor electrical connection
• B. Lack of rectification of the transmitter's signal in power conductors
• C. Not using a balun or line isolator to feed balanced antennas
• D. Using a balun to feed an unbalanced antenna

G6A12

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

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

G1E05

10. What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

• A. They must relate to emergencies or disaster relief
• B. The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
• C. They must be for other licensed amateurs
• D. They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

G2C07

11. When sending CW, what does a "C" mean when added to the RST report?

• A. Chirpy or unstable signal
• B. 100 percent copy
• C. Report was read from an S meter rather than estimated
• D. Key clicks

G1C05

12. What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

• A. 100 watts PEP output
• B. 1000 watts PEP output
• C. 1500 watts PEP output
• D. 2000 watts PEP output

G2B06

13. How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

• A. Send "QSY" on CW or if using phone, announce "the frequency is in use," then give your call sign and listen for a response
• B. Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
• C. Listen for 2 minutes before calling CQ
• D. Send the letter "V" in Morse code several times and listen for a response, or say "test" several times and listen for a response

G8A03

14. What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

• A. Frequency convolution
• B. Frequency transformation
• C. Frequency conversion
• D. Frequency modulation

G4B09

15. 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 measuring the frequency of an oscillator
• D. When high precision is desired

G5A06

16. How does a capacitor react to AC?

• A. As the frequency of the applied AC increases, the reactance increases
• B. As the frequency of the applied AC increases, the reactance decreases
• C. As the amplitude of the applied AC increases, the reactance decreases
• D. As the amplitude of the applied AC increases, the reactance increases

G0B10

17. Which of the following is a danger from lead-tin solder?

• A. High voltages can cause lead-tin solder to disintegrate suddenly
• B. Lead can contaminate food if hands are not washed carefully after handling the solder
• C. RF energy can convert the lead into a poisonous gas
• D. Tin in the solder can "cold flow," causing shorts in the circuit

G2E05

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

• A. DSB
• B. SSB
• C. LSB
• D. USB

G6B01

19. What determines the performance of a ferrite core at different frequencies?

• A. The ratio of outer diameter to inner diameter
• B. The composition, or "mix," of materials used
• C. Its thickness
• D. Its conductivity

G5C10

20. What is the inductance of three 10-millihenry inductors connected in parallel?

• A. 3.3 henries
• B. 30 millihenries
• C. 3.3 millihenries
• D. 0.30 henries

G4D10

21. 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

G1B01

22. What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

• A. 50 feet
• B. 250 feet
• C. 100 feet
• D. 200 feet

G5B14

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

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

G9D06

24. Which of the following is an advantage of a log-periodic antenna?

• A. Higher gain per element than a Yagi antenna
• B. Harmonic suppression
• C. Polarization diversity
• D. Wide bandwidth

G4A13

25. What is the purpose of using a receive attenuator?

• A. To reduce power consumption when operating from batteries
• B. To prevent receiver overload from strong incoming signals
• C. To reduce excessive audio level on strong signals
• D. To reduce the transmitter power when driving a linear amplifier

G9A02

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

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

G0A08

27. Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

• A. All these choices are correct
• B. Post a copy of FCC Part 97.13 in the station
• C. Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
• D. Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels

G9C11

28. What is a beta or hairpin match?

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

G4E09

29. What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

• A. 0.5 VDC
• B. 1.38 VDC
• C. 0.2 VDC
• D. 0.02 VDC

G2A03

30. Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

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

G7B03

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

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

G2D01

32. What is the Volunteer Monitor Program?

• A. Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
• B. Amateur volunteers who conduct amateur licensing examinations
• C. Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
• D. Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations

G7C06

33. Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

• A. Mixing products are greatly reduced
• B. A wide range of filter bandwidths and shapes can be created
• C. Fewer digital components are required
• D. The DSP filter is much more effective at VHF frequencies

G1A01

34. On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

• A. 160 meters, 60 meters, 15 meters, and 12 meters
• B. 80 meters, 40 meters, 20 meters, and 15 meters
• C. 60 meters, 30 meters, 17 meters, and 12 meters
• D. 80 meters, 20 meters, 15 meters, and 10 meters

G9B04

35. What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

• A. It is a figure-eight off both ends of the antenna
• B. It is a figure-eight at right angles to the antenna
• C. It is a circle (equal radiation in all directions)
• D. It has a pair of lobes on one side of the antenna and a single lobe on the other side