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

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	Always hold on to the tower with one hand
B	All these choices are correct
C	Ensure that all heavy tools are securely fastened to the harness
D	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	160 meters, 60 meters, 15 meters, and 12 meters
B	80 meters, 20 meters, 15 meters, and 10 meters
C	80 meters, 40 meters, 20 meters, and 15 meters
D	60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B05

Which of the following one-way transmissions are permitted?

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

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Type-certify equipment to FCC standards
B	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
C	Publicly document the technical characteristics of the protocol
D	Obtain an experimental license from the FCC

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	There is no age limit
B	16 years
C	18 years
D	21 years

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

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 caller is welcome to respond
D	Any stations outside the lower 48 states

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

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Sending without error
B	Operating split to avoid interference on frequency
C	Matching the transmit frequency to the frequency of a received signal
D	Matching the speed of the transmitting station

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare vertical and horizontal signal strengths on the input frequency
B	All these choices are correct
C	Compare signal strengths between the input and output of the repeater
D	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve ground wave propagation
B	Degrade ground wave propagation
C	Degrade high-latitude HF 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	The Lowest Usable Frequency for communications between two specific points
C	The Lowest Usable Frequency during a 24-hour period
D	Lowest Usable Frequency for communications to any point outside a 100-mile radius

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The E region is unstable during daylight hours
B	The F region absorbs signals at these frequencies during daylight hours
C	The F region is unstable during daylight hours
D	The D region absorbs signals at these frequencies during daylight hours

16. - G4A04

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

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

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Higher precision
B	Faster response
C	Better for measuring computer circuits
D	Less prone to overload

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	Distorted speech
B	A steady hum whenever the transmitter is on the air
C	Clearly audible speech
D	On-and-off humming or clicking

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 1 kHz above the edge of the segment
B	At least 3 kHz above the edge of the segment
C	At least 1 kHz below the edge of the segment
D	At least 3 kHz below the edge of the segment

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.2 VDC
B	0.5 VDC
C	0.02 VDC
D	1.38 VDC

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All these choices are correct
B	A length of transmission line
C	A transformer
D	A Pi-network

22. - G5B09

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

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

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	Displacement current coupling
D	Capacitive coupling

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

Select	Answer
A	The resistor’s tolerance value would not be adequate
B	The resistor’s inductance could make circuit performance unpredictable
C	The resistor could overheat
D	The resistor’s internal capacitance would detune the circuit

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	50 MHz
B	40 GHz
C	500 MHz
D	4 GHz

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Synchronous
B	Full-wave bridge
C	Half-wave
D	Full-wave

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Multiply the RF input power by the reciprocal of the RF output power
B	Add the RF input power to the DC output power
C	Divide the RF output power by the DC input power
D	Divide the DC input power by the DC output power

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	Mixing products are greatly reduced
C	The DSP filter is much more effective at VHF frequencies
D	Fewer digital components are required

29. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Insufficient bandwidth
C	Frequency drift
D	Excessive bandwidth

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Symbol rate and bandwidth are not related
B	Lower symbol rates require wider bandwidth
C	Higher symbol rates require wider bandwidth
D	Bandwidth is half the symbol rate

31. - G8C06

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

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

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	1:1
B	Between 1:1 and 5:1 depending on the characteristic impedance of the line
C	5:1
D	Between 1:1 and 5:1 depending on the reflected power at the transmitter

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	11 feet
C	16 feet
D	21 feet

34. - G9C12

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

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

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	Impedance varies periodically as a function of frequency
C	SWR varies periodically as a function of boom length
D	Element length and spacing vary logarithmically along the boom