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

2. - G0B08

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

Select	Answer
A	All these choices are correct
B	Unground the base of the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	Notify the electric company that a person will be working on 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 record the call sign of the primary service station before operating on a frequency assigned to that station
B	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
C	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
D	Amateur stations may use the band only during emergencies

4. - G1B05

Which of the following one-way transmissions are permitted?

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

5. - G1C07

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

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

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	Whenever they operate on any amateur frequency
B	A special identifier is not required if their General class license application has been filed with the FCC
C	Whenever they operate using Technician frequency privileges
D	Whenever they operate using General class frequency privileges

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

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less subject to interference from atmospheric static crashes
B	Ease of tuning on receive and immunity to impulse noise
C	Very high-fidelity voice modulation
D	Less bandwidth used and greater power efficiency

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

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The fastest speed at which you are comfortable copying, but no slower than the CQ
B	At the standard calling speed of 10 wpm
C	The fastest speed at which you are comfortable copying, but no faster than the CQ
D	At the standard calling speed of 5 wpm

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Along the gray line
B	Toward the rising sun
C	Toward the north
D	180 degrees from the station’s short-path heading

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	170 Hz
B	425 Hz
C	850 Hz
D	85 Hz

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is improved
B	VHF/UHF ducting is disturbed
C	HF communication is disturbed
D	VHF/UHF ducting is improved

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Solar radiation and ionospheric disturbances
B	Time of day and season
C	Path distance and location
D	All these choices are correct

15. - G3C06

What is a characteristic of HF scatter?

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

16. - G4A07

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

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

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	RF interference
C	Radio wave propagation
D	Antenna front-to-back ratio

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	A CW signal at a nearly pure audio frequency
D	Severely distorted audio

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Excess intermodulation products
B	Excessive background noise
C	All these choices are correct
D	Distorted speech

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ensure the battery is placed terminals-up
B	A series resistor must be in place
C	The solar panel must have a charge controller
D	Ground the solar panel outer metal framework

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of current to voltage
B	The product of current and voltage
C	The product of current and reactance
D	The ratio of voltage to current

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 watts
B	Approximately 61 watts
C	Approximately 61 milliwatts
D	Approximately 11 milliwatts

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	75 ohms
B	300 ohms
C	150 ohms
D	67 ohms

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

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

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	All these choices are correct
B	Most of the magnetic field is contained in the core
C	Large values of inductance may be obtained
D	The magnetic properties of the core may be optimized for a specific range of frequencies

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	All these choices are correct
C	Transformers and transducers
D	Capacitors and inductors

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	An amplifier and a divider
C	A frequency multiplier and a mixer
D	A circulator and a filter operating in a feed-forward loop

28. - G7C07

What term specifies a filter’s attenuation inside its passband?

Select	Answer
A	Q
B	Ultimate rejection
C	Return loss
D	Insertion loss

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Amplitude compressed AM
B	8-bit direct sequence spread spectrum
C	Vestigial sideband
D	8-tone frequency shift keying

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It is required by FCC rules
B	It improves impedance matching of the antenna
C	It minimizes power consumption in the receiver
D	It results in the best signal-to-noise ratio

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Long path propagation
B	Insufficient modulation
C	Backscatter propagation
D	Overmodulation

32. - G9A04

What causes reflected power at an antenna’s feed point?

Select	Answer
A	Using more transmitter power than the antenna can handle
B	Operating an antenna at its resonant frequency
C	A difference between feed line impedance and antenna feed point impedance
D	Feeding the antenna with unbalanced feed line

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower ground losses
B	Lower radiation resistance
C	Shorter radials
D	Lower feed point impedance

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. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows quick selection of vertical or horizontal polarization
B	It allows simultaneous vertical and horizontal polarization
C	It narrows the main lobe in elevation
D	It narrows the main lobe in azimuth