Practice Exam

G4A03

1. How does a noise blanker work?

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

G9A05

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

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

G9D03

3. In which direction is the maximum radiation from a VHF/UHF "halo" antenna?

• A. Omnidirectional in the plane of the halo
• B. On the same side as the feed point
• C. Broadside to the plane of the halo
• D. Opposite the feed point

G4D05

4. How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

• A. It is 100 times more powerful
• B. It is 20 times more powerful
• C. It is 10 times less powerful
• D. It is 20 times less powerful

G1A07

5. On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

• A. The entire band
• B. 28.000 MHz to 28.300 MHz only
• C. 28.000 MHz to 28.025 MHz only
• D. 28.025 MHz to 28.300 MHz only

G8C16

6. Which of the following provide digital voice modes?

• A. DMR, D-STAR, and SystemFusion
• B. FT8, FT4, and FST4
• C. WSPR, MFSK16, and EasyPAL
• D. Winlink, PACTOR II, and PACTOR III

G4E11

7. What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

• A. The solar panel must have a charge controller
• B. Ground the solar panel outer metal framework
• C. Ensure the battery is placed terminals-up
• D. A series resistor must be in place

G3C06

8. What is a characteristic of HF scatter?

• A. Scatter propagation occurs only at night
• B. There are very large, sudden swings in signal strength
• C. Signals have a fluttering sound
• D. Phone signals have high intelligibility

G7C10

9. What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

• A. Minimum detectible signal level is reduced
• B. The need for high resolution analog-to-digital converters is eliminated
• C. Automatic conversion of the signal from digital to analog
• D. All types of modulation can be created with appropriate processing

G3A04

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

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

G9B07

11. How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?

• A. It steadily increases
• B. It peaks at about 1/8 wavelength above ground
• C. It steadily decreases
• D. It is unaffected by the height above ground

G8B06

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

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

G7B07

13. 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. An amplifier and a divider
• C. A filter and an amplifier operating in a feedback loop
• D. A frequency multiplier and a mixer

G1B05

14. Which of the following one-way transmissions are permitted?

• A. Regular transmissions offering equipment for sale, if intended for amateur radio use
• B. All these choices are correct
• C. Transmissions to assist with learning the International Morse code
• D. Unidentified test transmissions of less than 10 seconds in duration

G2A03

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

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

G2E12

16. Which of the following describes Winlink?

• A. An amateur radio wireless network to send and receive email on the internet
• B. A wireless network capable of both VHF and HF band operation
• C. All of the above
• D. A form of Packet Radio

G1C05

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

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

G2D02

18. Which of the following are objectives of the Volunteer Monitor Program?

• A. To provide emergency and public safety communications
• B. To coordinate repeaters for efficient and orderly spectrum usage
• C. To encourage amateur radio operators to self-regulate and comply with the rules
• D. To conduct efficient and orderly amateur licensing examinations

G5C11

19. What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

• A. 70 millihenries
• B. 1,000 millihenries
• C. 14.3 millihenries
• D. 7 millihenries

G5A06

20. How does a capacitor react to AC?

• A. As the amplitude 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 frequency of the applied AC increases, the reactance increases

G4C10

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

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

G7A02

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

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

G5B10

23. What percentage of power loss is equivalent to a loss of 1 dB?

• A. 12.2 percent
• B. 20.6 percent
• C. 10.9 percent
• D. 25.9 percent

G6B11

24. What is an SMA connector?

• A. A small threaded connector suitable for signals up to several GHz
• B. A connector designed for serial multiple access signals
• C. A type of push-on connector intended for high-voltage applications
• D. A type-S to type-M adaptor

G1D11

25. What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

• A. There are no requirements other than being able to show a copy of the expired license
• B. Contact the FCC to have the license reinstated
• C. The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
• D. They must have a letter from the FCC showing they once held an amateur or commercial license

G9C09

26. 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 6 dB higher
• B. Approximately 9 dB higher
• C. Approximately 3 dB higher
• D. Approximately 1.5 dB higher

G2B09

27. Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

• A. Only a RACES net control operator
• B. Any control operator when normal communication systems are operational
• C. Only a person holding an FCC-issued amateur operator license
• D. A person holding an FCC-issued amateur operator license or an appropriate government official

G1E12

28. When may third-party messages be transmitted via remote control?

• A. Under any circumstances in which third party messages are permitted by FCC rules
• B. Only when the message is intended for third parties in areas where licensing is controlled by the FCC
• C. Only when the message is intended for licensed radio amateurs
• D. Under no circumstances except for emergencies

G0B02

29. According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

• A. AWG number 8
• B. AWG number 20
• C. AWG number 16
• D. AWG number 12

G3B09

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

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

G2C08

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

• A. BK
• B. SK
• C. KN
• D. AR

G4B05

32. Why do voltmeters have high input impedance?

• A. It allows for higher voltages to be safely measured
• B. It improves the frequency response
• C. It improves the resolution of the readings
• D. It decreases the loading on circuits being measured

G8A02

33. What is the name of the process that changes the phase angle of an RF signal to convey information?

• A. Phase modulation
• B. Phase transformation
• C. Phase inversion
• D. Phase convolution

G0A10

34. 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

G6A05

35. What is the approximate forward threshold voltage of a silicon junction diode?

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