Practice Exam

G3C07

1. What makes HF scatter signals often sound distorted?

• A. Ground waves are absorbing much of the signal
• B. Energy is scattered into the skip zone through several different paths
• C. The ionospheric region involved is unstable
• D. The E region is not present

G9B10

2. What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

• A. 8 feet
• B. 33 feet
• C. 16 feet
• D. 24 feet

G2A06

3. Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

• A. Less subject to interference from atmospheric static crashes
• B. Ease of tuning on receive and immunity to impulse noise
• C. Less bandwidth used and greater power efficiency
• D. Very high-fidelity voice modulation

G5C10

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

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

G6A08

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

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

G3B12

6. Which of the following is typical of the lower HF frequencies during the summer?

• A. Poor propagation at any time of day
• B. World-wide propagation during daylight hours
• C. Heavy distortion on signals due to photon absorption
• D. High levels of atmospheric noise or static

G8B09

7. Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

• A. It results in the best signal-to-noise ratio
• B. It improves impedance matching of the antenna
• C. It is required by FCC rules
• D. It minimizes power consumption in the receiver

G5A05

8. How does an inductor react to AC?

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

G1C05

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

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

G0B02

10. 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 12
• B. AWG number 16
• C. AWG number 20
• D. AWG number 8

G4D04

11. What does an S meter measure?

• A. Impedance
• B. Carrier suppression
• C. Transmitter power output
• D. Received signal strength

G9D04

12. What is the primary function of antenna traps?

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

G1D02

13. What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

• A. Technician only
• B. Amateur Extra, General, and Technician
• C. General and Technician
• D. None, only Amateur Extra class licensees may be accredited

G9C10

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

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

G8C16

15. Which of the following provide digital voice modes?

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

G7A11

16. Which symbol in figure G7-1 represents an NPN junction transistor?

• A. Symbol 7
• B. Symbol 11
• C. Symbol 2
• D. Symbol 1

G2B08

17. What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

• A. Only digital contacts
• B. Only SSTV contacts
• C. Only contacts with other stations within the 48 contiguous states
• D. Only contacts with stations not within the 48 contiguous states

G3A06

18. What is a geomagnetic storm?

• A. Ripples in the geomagnetic force
• B. A sudden drop in the solar flux index
• C. A thunderstorm that affects radio propagation
• D. A temporary disturbance in Earth's geomagnetic field

G4E06

19. What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

• A. Harmonic radiation may increase
• B. Operating bandwidth may be very limited
• C. Short antennas are more likely to cause distortion of transmitted signals
• D. Q of the antenna will be very low

G9A09

20. What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

• A. 1:4
• B. 1:2
• C. 2:1
• D. 4:1

G1A03

21. On which of the following bands is image transmission prohibited?

• A. 160 meters
• B. 30 meters
• C. 12 meters
• D. 20 meters

G4C07

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

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

G7C09

23. What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

• A. 45 degrees
• B. Zero
• C. 180 degrees
• D. 90 degrees

G6B06

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

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

G7B11

25. For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

• A. All these choices are correct
• B. SSB
• C. AM
• D. FM

G8A04

26. What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

• A. Multiplex modulation
• B. Phase modulation
• C. Pulse modulation
• D. Amplitude modulation

G5B03

27. How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

• A. 3200 watts
• B. 200 watts
• C. 400 watts
• D. 0.5 watts

G4B07

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

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

G0A09

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

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

G2E06

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

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

G1B05

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

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

G1E05

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

G2D04

33. Which of the following describes an azimuthal projection map?

• A. A map that shows accurate land masses
• B. A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
• C. A map that shows the angle at which an amateur satellite crosses the equator
• D. A map that shows true bearings and distances from a specific location

G4A04

34. What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier's TUNE control?

• A. No change will be observed
• B. A pronounced peak
• C. A slow, rhythmic oscillation
• D. A pronounced dip

G2C08

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

• A. KN
• B. AR
• C. SK
• D. BK