US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A10

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?

Select	Answer
A	All these choices are correct
B	Change to a non-polarized antenna with higher gain
C	Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
D	Use an antenna with a higher front-to-back ratio

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	RF exposure limits of the human body
B	Acceptable bandwidth limits
C	Acceptable modulation limits
D	Electrical safety of the station

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
B	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations may use the band only during emergencies
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Unidentified transmissions of less than 10 seconds duration for test purposes only
B	Occasional retransmission of weather and propagation forecast information from US government stations
C	Encrypted messages, if not intended to facilitate a criminal act
D	Automatic retransmission of other amateur signals by any amateur station

5. - G1C02

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

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

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	A Volunteer Examiner Coordinator
C	The Federal Communications Commission
D	The Universal Licensing System

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	A system of automatic digital stations operates on those frequencies
B	These frequencies are set aside for bulletins from the FCC
C	These frequencies are set aside for emergency operations
D	A system of propagation beacon stations operates on those frequencies

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only stations in Germany
B	Only contest stations
C	Any stations outside the lower 48 states
D	Any caller is welcome to respond

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All these choices are correct
B	Follow the voluntary band plan
C	Listen on the frequency for at least two minutes to be sure it is clear
D	Identify your station by transmitting your call sign at least 3 times

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Will you keep the frequency clear?”
C	“Are you listening only for a specific station?”
D	“Are you busy?” or “Is this frequency in use?”

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a specific location
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 accurate land masses

12. - G2E12

Which of the following describes Winlink?

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

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At the summer solstice
C	At any point
D	Only at the maximum point

14. - G3B09

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

Select	Answer
A	1,200 miles
B	180 miles
C	2,500 miles
D	12,000 miles

15. - G3C06

What is a characteristic of HF scatter?

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

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

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

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	An external RF oscillator
B	The local oscillator of the transmitter
C	The transmitter balanced mixer output
D	The attenuated RF output of the transmitter

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	Insulated wire has been used for the ground wire
C	The ground rod is resonant
D	The ground wire has high impedance on that frequency

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 1.5 times
B	Approximately 2 times
C	Approximately 4 times
D	Approximately 8 times

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The socket’s wiring may be inadequate for the current drawn by the transceiver
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Reluctance
C	Conductance
D	Admittance

22. - G5B03

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

Select	Answer
A	0.5 watts
B	400 watts
C	3200 watts
D	200 watts

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	A capacitor in parallel
B	An inductor in series
C	A capacitor in series
D	An inductor in parallel

24. - G6A12

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

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

25. - G6B01

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

Select	Answer
A	The ratio of outer diameter to inner diameter
B	Its thickness
C	Its conductivity
D	The composition, or “mix,” of materials used

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	360 degrees
B	270 degrees
C	180 degrees
D	90 degrees

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To limit the modulation index
B	To eliminate self-oscillations
C	To keep the carrier on frequency
D	To cut off the final amplifier during standby periods

28. - G7C02

What output is produced by a balanced modulator?

Select	Answer
A	Audio with equalized frequency response
B	Frequency modulated RF
C	Double-sideband modulated RF
D	Audio extracted from the modulation signal

29. - G8A02

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

Select	Answer
A	Phase transformation
B	Phase modulation
C	Phase inversion
D	Phase convolution

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	RF input
B	Image frequency
C	Local oscillator
D	Beat frequency oscillator

31. - G8C16

Which of the following provide digital voice modes?

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

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 100 feet
B	Decibels per 1,000 feet
C	Decibels per 100 feet
D	Ohms per 1,000 feet

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	132 feet
C	263 feet
D	84 feet

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1/2 wavelength
B	1/4 wavelength
C	3/4 wavelength
D	1 wavelength

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Portable direction finding at higher HF frequencies
B	Directional receiving for MF and low HF bands
C	Portable direction finding at lower HF frequencies
D	Directional transmitting for low HF bands