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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	An SWR meter with a peak-reading function
B	A receiver with digital signal processing (DSP) noise reduction
C	An oscilloscope with a high-stability crystal marker generator
D	A calibrated field strength meter with a calibrated antenna

2. - G0B07

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

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

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.025 MHz to 28.300 MHz only
B	28.000 MHz to 28.300 MHz only
C	28.000 MHz to 28.025 MHz only
D	The entire band

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
B	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
C	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
D	Only when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS output from the transmitter
B	RMS input to the antenna
C	PEP input to the antenna
D	PEP output from the transmitter

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When operating within one mile of an FCC Monitoring Station
B	All these choices are correct
C	When a station is transmitting spread spectrum emissions
D	When using a band where the Amateur Service is secondary

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Attenuator level
B	Antenna inductance or capacitance
C	RF clipping level
D	Transmit audio or microphone gain

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Nets have priority
B	Contest operations should yield to non-contest use of frequencies
C	Except during emergencies, no amateur station has priority access to any frequency
D	QSOs in progress have priority

10. - G2C09

What does the Q signal “QSL” mean?

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows true bearings and distances from a specific location
D	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Send QRL in Morse code
C	Transmit a connect message on the station’s published frequency
D	Send an email to the system control operator

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	Ripples in the geomagnetic force
B	A sudden drop in the solar flux index
C	A thunderstorm that affects radio propagation
D	A temporary disturbance in Earth’s geomagnetic field

14. - G3B02

What factors affect the MUF?

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

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The highest frequency which is refracted back to Earth
B	The lowest frequency which is refracted back to Earth
C	The frequency at which the signal-to-noise ratio approaches unity
D	The frequency at which the signal-to-noise ratio is 6 dB

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	More stations can be accommodated within a given signal passband
C	It may be possible to reduce or eliminate interference from other signals
D	Accidental out-of-band operation can be prevented

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ammeter
B	An ohmmeter
C	A signal generator
D	An oscilloscope

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Not using a balun or line isolator to feed balanced antennas
B	Arcing at a poor electrical connection
C	Using a balun to feed an unbalanced antenna
D	Lack of rectification of the transmitter’s signal in power conductors

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It reduces harmonic distortion
C	It increases peak power
D	It increases average power

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To limit the current flowing from the panel to a safe value
B	To prevent discharge of the battery through the panel during times of low or no illumination
C	To prevent damage to the battery due to excessive voltage at high illumination levels
D	To prevent overload by regulating the charging voltage

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Current and voltage are equal
B	Inductive reactance and capacitive reactance cancel
C	The circuit radiates all its energy in the form of radio waves
D	Resistance is cancelled

22. - G5B11

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

Select	Answer
A	1.414
B	1.00
C	0.707
D	2.00

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	17 ohms
B	0.17 ohms
C	80 ohms
D	5.9 ohms

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

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

25. - G6B04

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

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

26. - G7A08

Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	High-frequency operation allows the use of smaller components
B	Fewer circuit components are required
C	Faster switching time makes higher output voltage possible
D	Inherently more stable

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	FM
C	All these choices are correct
D	SSB

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Neper frequency
B	Rolloff frequency
C	Notch frequency
D	Cutoff frequency

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Multiplex modulation
B	Pulse modulation
C	Phase modulation
D	Amplitude modulation

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Quadrature response
B	Intermediate interference
C	Mixer interference
D	Image response

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By using the Varicode character set
B	By using a parity bit with each character
C	By controlling transmitter output power for optimum signal strength
D	By transmitting redundant information with the data

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The antenna feed point must be at DC ground potential
C	The feed line must be an odd number of electrical quarter wavelengths long
D	The feed line must be an even number of physical half wavelengths long

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface or buried a few inches below the ground
B	At the center of the antenna
C	Parallel to the antenna element
D	As high as possible above the ground

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Larger-diameter elements
B	Loading coils in series with the element
C	Tapered-diameter elements
D	Closer element spacing

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Directional receiving for MF and low HF bands
B	Directional transmitting for low HF bands
C	Portable direction finding at higher HF frequencies
D	Portable direction finding at lower HF frequencies