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	All these choices are correct
D	Post a copy of FCC Part 97.13 in the station

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Make sure all circuits that supply power to the tower are locked out and tagged
B	Notify the electric company that a person will be working on the tower
C	All these choices are correct
D	Unground the base of the tower

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

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	They may be used if they do not obscure the meaning of a message
B	They are limited to those expressly listed in Part 97 of the FCC rules
C	They are not permitted
D	Only “Q” signals are permitted

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	1500 watts PEP
B	10 watts RMS
C	ERP of 100 watts PEP with respect to a dipole
D	ERP of 100 watts PEP with respect to an isotropic antenna

6. - G1D12

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

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

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only if the 10-meter repeater control operator holds at least a General class license
B	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
C	Only during an FCC-declared general state of communications emergency
D	Under no circumstances

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

Select	Answer
A	SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
B	Only one sideband and the carrier are transmitted; the other sideband is suppressed
C	Only one sideband is transmitted; the other sideband and carrier are suppressed
D	SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 1 hour per week
B	No more than 2 hours per month
C	No more than 1 hour per month
D	No more than 2 hours per week

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	Zero beat my signal
B	I am troubled by static
C	Send more slowly
D	Stop sending

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 operate according to conditions
D	To allow each station to calibrate their frequency display

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	SSB
B	USB
C	LSB
D	DSB

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Creates auroras that can reflect VHF signals
B	Improve HF long path propagation
C	Reduce long delayed echoes
D	Increases signal strength for HF signals passing through the polar regions

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are refracted and trapped in the ionosphere to circle Earth
B	They are amplified by interaction with the ionosphere
C	They pass through the ionosphere
D	They are refracted back to Earth

15. - G3C06

What is a characteristic of HF scatter?

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

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the SWR in the feed line to the antenna
B	All these choices are correct
C	Reduce the power dissipation in the feedline to the antenna
D	Increase power transfer from the transmitter to the feed line

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

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	Corrosion of the ground rod
B	A ground loop
C	Overheating of ground straps
D	High RF voltages on the enclosures of station equipment

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 2 times
B	Approximately 4 times
C	Approximately 8 times
D	Approximately 1.5 times

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	FCC rules limiting mobile output power on the 75-meter band
C	Efficiency of the electrically short antenna
D	“Picket fencing”

21. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance decreases
B	As the frequency of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance decreases

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	24 volts
B	8.5 volts
C	12 volts
D	34 volts

23. - G5C10

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

Select	Answer
A	30 millihenries
B	3.3 henries
C	0.30 henries
D	3.3 millihenries

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Tight tolerance
B	High capacitance for a given volume
C	Inexpensive RF capacitor
D	Much less leakage than any other type

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	Type N
B	PL-259
C	RCA Phono
D	BNC

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 11
B	Symbol 6
C	Symbol 7
D	Symbol 1

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 cut off the final amplifier during standby periods
D	To keep the carrier on frequency

28. - G7C01

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

Select	Answer
A	Carrier oscillator
B	RF amplifier
C	Filter
D	IF amplifier

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 convolution
B	Frequency modulation
C	Frequency conversion
D	Frequency transformation

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Balanced converter
B	Reactance modulator
C	Multiplier
D	Mixer

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	The connection is dropped
B	Packets will be routed incorrectly
C	Encoding reverts to the default character set
D	The checksum overflows

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 distance between the centers of the conductors and the radius of the conductors
C	The frequency of the signal and the length of the line
D	The radius of the conductors and the frequency of the signal

33. - G9B07

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?

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

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It is useful for matching multiband antennas
B	It does not require any inductors or capacitors
C	All these choices are correct
D	It does not require the driven element to be insulated from the boom

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be fed with open wire line
B	They must be used with an antenna tuner
C	They have poor harmonic rejection
D	They present low impedance on all design frequencies

Figure G7-1