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	Post a copy of FCC Part 97.13 in the station
C	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
D	All these choices are correct

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the neutral wire
B	Only the hot wires
C	All wires
D	Only the ground wire

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	24900 kHz
C	18155 kHz
D	21300 kHz

4. - G1B04

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

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

5. - G1C02

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

Select	Answer
A	1500 watts PEP output
B	50 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
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	Only those of the remote station’s country
B	Those of the remote station’s country and the FCC’s third-party regulations
C	Those of both the remote station’s country and the FCC
D	Only those of the FCC

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	The third party is speaking in a language other than English
B	The third party is not a US citizen
C	The third party’s amateur license has been revoked and not reinstated
D	All these choices are correct

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	The received signal is more natural sounding
B	It provides more power output
C	It allows “hands free” operation
D	It occupies less bandwidth

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Inform your local emergency coordinator
B	Immediately cease all transmissions
C	Acknowledge the station in distress and determine what assistance may be needed
D	Immediately decrease power to avoid interfering with the station in distress

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	I have received and understood
B	We have already confirmed the contact
C	Send slower
D	We have worked before

11. - G2D10

What is QRP operation?

Select	Answer
A	Low-power transmit operation
B	Remote piloted model control
C	Transmission using Quick Response Protocol
D	Traffic relay procedure net operation

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Terminal Node Controller
B	RJ-45
C	Gateway
D	Printer/Server

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Degrade high-latitude HF propagation
B	Improve ground wave propagation
C	Degrade ground wave propagation
D	Improve high-latitude HF propagation

14. - G3B07

What does LUF stand for?

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

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Chordal hop
B	Short-path
C	Faraday rotation
D	Scatter

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	The ALC action distorts the signal
B	ALC will invert the modulation of the AFSK mode
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	All these choices are correct

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When testing logic circuits
B	When high precision is desired
C	When measuring the frequency of an oscillator
D	When adjusting circuits for maximum or minimum values

18. - G4C06

What is a possible effect of a resonant ground connection?

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

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 MHz to 14.347 MHz
B	14.347 MHz to 14.647 MHz
C	14.347 MHz to 14.350 MHz
D	14.3455 MHz to 14.3485 MHz

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	“Picket fencing”
C	Efficiency of the electrically short antenna
D	FCC rules limiting mobile output power on the 75-meter band

21. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of alternating current caused by capacitance or inductance
B	Reinforcement of the flow of alternating current caused by capacitance or inductance
C	Opposition to the flow of direct current caused by resistance
D	Reinforcement of the flow of direct current caused by resistance

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	0.707
C	1.414
D	2.00

23. - G5C11

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

Select	Answer
A	70 millihenries
B	7 millihenries
C	1,000 millihenries
D	14.3 millihenries

24. - G6A05

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

Select	Answer
A	1.0 volts
B	0.7 volts
C	0.1 volt
D	0.3 volts

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Mode Modulated Integrated Circuit
B	Monolithic Microwave Integrated Circuit
C	Metal Monolayer Integrated Circuit
D	Multi-Mode Integrated Circuit

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	Only one diode is required
B	The ripple frequency is twice that of a full-wave rectifier
C	The output voltage is two times the peak input voltage
D	More current can be drawn from the half-wave rectifier

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier used as a frequency multiplier
C	An amplifier in which the output preserves the input waveform
D	Any RF power amplifier used in conjunction with an amateur transceiver

28. - G7C01

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

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

29. - G8A13

What is a link budget?

Select	Answer
A	The sum of transmit power and antenna gains minus system losses as seen at the receiver
B	The financial costs associated with operating a radio link
C	The sum of antenna gains minus system losses
D	The difference between transmit power and receiver sensitivity

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	Multiplier
C	Mixer
D	Reactance modulator

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is intensity, time is vertical
B	Frequency is horizontal, signal strength is vertical, time is intensity
C	Frequency is vertical, signal strength is horizontal, time is intensity
D	Frequency is vertical, signal strength is intensity, time is horizontal

32. - G9A01

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

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

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Coil the radials
B	Slope the radials upward
C	Slope the radials downward
D	Lengthen the radials beyond one wavelength

34. - G9C02

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

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

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
B	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
C	A vertical dipole placed at approximately 1/2 wavelength above the ground
D	A horizontal dipole placed at approximately 1/2 wavelength above the ground