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. - G0A08

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

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

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	Where the feed lines enter the building
B	In series with each ground lead
C	At the closest power pole ground electrode
D	On the antenna, opposite the feed point

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	7.125 MHz to 7.175 MHz
B	28.000 MHz to 28.025 MHz
C	21.275 MHz to 21.300 MHz
D	All these choices are correct

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	200 watts PEP output
C	10 watts PEP output
D	100 watts PEP output

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1500 watts PEP output
B	1000 watts PEP output
C	2000 watts PEP output
D	200 watts PEP output

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Those of the remote station’s country and the FCC’s third-party regulations
B	Only those of the remote station’s country
C	Those of both the remote station’s country and the FCC
D	Only those of the FCC

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 4
B	Region 2
C	Region 1
D	Region 3

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single phase modulation
B	Frequency modulation
C	Double sideband
D	Single sideband

9. - G2B09

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

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

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	No US stations should call
B	Closing station now
C	Operating full break-in
D	Listening only for a specific station or stations

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To be sure the contact will count for award programs
B	To follow standard radiogram structure
C	To allow each station to calibrate their frequency display
D	To allow each station to operate according to conditions

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	CW
B	DSB
C	USB
D	LSB

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	It disrupts communications via satellite more than direct communications
B	It enhances propagation on all HF frequencies
C	None, because only areas on the night side of the Earth are affected
D	It disrupts signals on lower frequencies more than those on higher frequencies

14. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two specific points
B	Lowest Usable Frequency for communications to any point outside a 100-mile radius
C	Lowest Usable Frequency during the past 60 minutes
D	The Lowest Usable Frequency during a 24-hour period

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Propagation near the MUF
B	Double hop propagation near the LUF
C	Long path HF propagation at sunrise and sunset
D	Short distance MF or HF propagation at high elevation angles

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	Received frequency may become unstable
B	CW signals may become severely attenuated
C	Received signals may become distorted
D	Received frequency may shift several kHz

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
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

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A chirpy CW signal
B	On-and-off humming or clicking
C	Severely distorted audio
D	A CW signal at a nearly pure audio frequency

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 MHz to 7.178 MHz
B	7.1765 MHz to 7.1795 MHz
C	7.178 MHz to 7.181 MHz
D	7.178 MHz to 7.184 MHz

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To increase the power handling capacity of a whip antenna
B	To electrically lengthen a physically short antenna
C	To lower the radiation angle
D	To reduce radiation resistance

21. - G5A06

How does a capacitor react to AC?

Select	Answer
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

22. - G5B14

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

Select	Answer
A	625 watts
B	2500 watts
C	8.75 watts
D	5000 watts

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Mutual capacitance
C	Capacitive coupling
D	Displacement current coupling

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

Select	Answer
A	Catastrophic failure is likely
B	Harmonics are generated
C	Its reactance increases
D	It becomes capacitive

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Analog
B	MMIC
C	Programmable Logic
D	Digital

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 5
B	Symbol 4
C	Symbol 11
D	Symbol 1

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The time delay of the lag circuit
B	The number of stages in the divider
C	The number of stages in the counter
D	The inductance and capacitance in the tank circuit

28. - G7C10

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

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

29. - G8A03

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

Select	Answer
A	Frequency transformation
B	Frequency conversion
C	Frequency modulation
D	Frequency convolution

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Second harmonics
B	Odd-order
C	Intercept point
D	Even-order

31. - G8C16

Which of the following provide digital voice modes?

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

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The distance between the centers of the conductors and the length of the line
B	The frequency of the signal and the length of the line
C	The radius of the conductors and the frequency of the signal
D	The distance between the centers of the conductors and the radius of the conductors

33. - G9B04

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

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

34. - G9C10

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

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

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

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

Figure G7-1