US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A09

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

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

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	On the antenna, opposite the feed point
B	Where the feed lines enter the building
C	At the closest power pole ground electrode
D	In series with each ground lead

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	20 meters
C	160 meters
D	30 meters

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	250 feet
B	200 feet
C	100 feet
D	50 feet

5. - G1C07

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

Select	Answer
A	Publicly document the technical characteristics of the protocol
B	Obtain an experimental license from the FCC
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. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must hold an FCC granted amateur radio license of General class or above
B	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
C	The person must be a resident of the US for a minimum of 5 years
D	The person’s home citizenship must be in ITU region 2

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	100 watts
B	10 watts
C	1500 watts
D	100 milliwatts

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

Select	Answer
A	Double sideband
B	Suppressed sideband
C	Lower sideband
D	Upper sideband

9. - G2B01

Which of the following is true concerning access to frequencies?

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

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Are you listening only for a specific station?”
C	“Are you busy?” or “Is this frequency in use?”
D	“Will you keep the frequency clear?”

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To coordinate repeaters for efficient and orderly spectrum usage
B	To conduct efficient and orderly amateur licensing examinations
C	To encourage amateur radio operators to self-regulate and comply with the rules
D	To provide emergency and public safety communications

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A09

How can high geomagnetic activity benefit radio communications?

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

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the critical frequency
B	Just below the MUF
C	Just above the LUF
D	Just above the critical frequency

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Short distance MF or HF propagation at high elevation angles
B	Propagation near the MUF
C	Double hop propagation near the LUF
D	Long path HF propagation at sunrise and sunset

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce the transmitter power when driving a linear amplifier
B	To reduce excessive audio level on strong signals
C	To prevent receiver overload from strong incoming signals
D	To reduce power consumption when operating from batteries

17. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio signals of the same frequency shifted 90 degrees
C	Two swept frequency tones
D	Two audio frequency range square wave signals of equal amplitude

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Connect all ground conductors in series
B	Bond equipment enclosures together
C	Avoid using lock washers and star washers when making ground connections
D	Connect the AC neutral conductor to the ground wire

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 MHz to 7.178 MHz
B	7.178 MHz to 7.184 MHz
C	7.1765 MHz to 7.1795 MHz
D	7.178 MHz to 7.181 MHz

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 damage to the battery due to excessive voltage at high illumination levels
C	To prevent discharge of the battery through the panel during times of low or no illumination
D	To prevent overload by regulating the charging voltage

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	8.5 volts
B	12 volts
C	24 volts
D	34 volts

23. - G5C12

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

Select	Answer
A	14.3 microfarads
B	70 microfarads
C	1,000 microfarads
D	0.07 microfarads

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 could overheat
C	The resistor’s inductance could make circuit performance unpredictable
D	The resistor’s internal capacitance would detune the circuit

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Analog
B	Digital
C	Programmable Logic
D	MMIC

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It discharges the filter capacitors when power is removed
B	It removes shock hazards from the induction coils
C	It acts as a fuse for excess voltage
D	It eliminates ground loop current

27. - G7B11

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

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

28. - G7C07

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

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

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Amplitude modulation
B	Power modulation
C	Frequency modulation
D	Phase modulation

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	Mixer
B	Multiplier
C	Reactance modulator
D	Balanced converter

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	MSK144
B	FT8
C	AMTOR
D	MFSK32

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

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	132 feet
B	42 feet
C	263 feet
D	84 feet

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The maximum voltage standing wave point on a radiating element
B	The magnitude of the maximum vertical angle of radiation
C	The direction of maximum radiated field strength from the antenna
D	The point of maximum current in a radiating antenna element

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Polarization diversity
C	Wide bandwidth
D	Harmonic suppression