Practice Exam

G9B05

1. How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

• A. If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
• B. If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
• C. If the antenna is too high, the pattern becomes unpredictable
• D. Antenna height has no effect on the pattern

G1A01

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

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

G5C03

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

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

G4A02

4. What is the benefit of using the opposite or "reverse" sideband when receiving CW?

• A. More stations can be accommodated within a given signal passband
• B. It may be possible to reduce or eliminate interference from other signals
• C. Interference from impulse noise will be eliminated
• D. Accidental out-of-band operation can be prevented

G0B09

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

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

G1E05

6. 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. They must be for other licensed amateurs
• C. They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
• D. 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

G3C03

7. Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

• A. Because it is the densest
• B. Because of temperature inversions
• C. Because it is the highest
• D. Because of the Doppler effect

G2E04

8. Which of the following is good practice when choosing a transmitting frequency to answer a station calling CQ using FT8?

• A. Call on any frequency in the waterfall except the station's frequency
• B. Find a clear frequency during the alternate time slot to the calling station
• C. Find a clear frequency during the same time slot as the calling station
• D. Always call on the station's frequency

G7C01

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

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

G9C09

10. 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 1.5 dB higher
• B. Approximately 9 dB higher
• C. Approximately 3 dB higher
• D. Approximately 6 dB higher

G8B02

11. What is the term for interference from a signal at twice the IF frequency from the desired signal?

• A. Quadrature response
• B. Image response
• C. Mixer interference
• D. Intermediate interference

G2B06

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

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

G1C11

13. What measurement is specified by FCC rules that regulate maximum power?

• A. RMS output from the transmitter
• B. PEP input to the antenna
• C. PEP output from the transmitter
• D. RMS input to the antenna

G1B06

14. Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

• A. Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
• B. Under no circumstances, FCC rules take priority
• C. At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
• D. Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity

G5B11

15. What is the ratio of PEP to average power for an unmodulated carrier?

• A. 1.00
• B. 0.707
• C. 2.00
• D. 1.414

G7B04

16. In a Class A amplifier, what percentage of the time does the amplifying device conduct?

• A. 50%
• B. More than 50% but less than 100%
• C. Less than 50%
• D. 100%

G1D02

17. 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. Amateur Extra, General, and Technician
• C. Technician only
• D. General and Technician

G4E08

18. In what configuration are the individual cells in a solar panel connected together?

• A. Series-parallel
• B. Full-wave bridge
• C. Shunt
• D. Bypass

G3A05

19. What is the solar flux index?

• A. A measure of solar radiation with a wavelength of 10.7 centimeters
• B. A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
• C. A count of sunspots that is adjusted for solar emissions
• D. Another name for the American sunspot number

G5A02

20. What is reactance?

• A. Reinforcement of the flow of alternating current caused by capacitance or inductance
• B. Reinforcement of the flow of direct current caused by resistance
• C. Opposition to the flow of alternating current caused by capacitance or inductance
• D. Opposition to the flow of direct current caused by resistance

G2D10

21. What is QRP operation?

• A. Remote piloted model control
• B. Traffic relay procedure net operation
• C. Transmission using Quick Response Protocol
• D. Low-power transmit operation

G6B06

22. What kind of device is an integrated circuit operational amplifier?

• A. Analog
• B. MMIC
• C. Programmable Logic
• D. Digital

G4B03

23. Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

• A. An oscilloscope
• B. A wavemeter
• C. A sidetone monitor
• D. A field strength meter

G9A05

24. How does the attenuation of coaxial cable change with increasing frequency?

• A. Attenuation is independent of frequency
• B. Attenuation follows Marconi's Law of Attenuation
• C. Attenuation increases
• D. Attenuation decreases

G2A01

25. Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

G2C09

26. What does the Q signal "QSL" mean?

• A. We have already confirmed the contact
• B. We have worked before
• C. Send slower
• D. I have received and understood

G8C11

27. How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

• A. Mark and space
• B. Dot and dash
• C. On and off
• D. High and low

G9D08

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

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

G8A05

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

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

G4C08

30. Which of the following would reduce RF interference caused by common-mode current on an audio cable?

• A. Ground the center conductor of the audio cable causing the interference
• B. Add an additional insulating jacket to the cable
• C. Connect the center conductor to the shield of all cables to short circuit the RFI signal
• D. Place a ferrite choke on the cable

G4D10

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

G7A07

32. What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

• A. A series of DC pulses at twice the frequency of the AC input
• B. A series of DC pulses at the same frequency as the AC input
• C. A steady DC voltage
• D. A sine wave at half the frequency of the AC input

G6A08

33. Which of the following is characteristic of low voltage ceramic capacitors?

• A. High stability
• B. Tight tolerance
• C. Comparatively low cost
• D. High capacitance for given volume

G3B03

34. Which frequency will have the least attenuation for long-distance skip propagation?

• A. Just below the MUF
• B. Just above the LUF
• C. Just below the critical frequency
• D. Just above the critical frequency

G0A02

35. Which of the following is used to determine RF exposure from a transmitted signal?

• A. Its power density
• B. Its frequency
• C. All these choices are correct
• D. Its duty cycle