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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Make sure that MPE limits are not exceeded in occupied areas
B	Locate the antenna close to your operating position to minimize feed-line radiation
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Make sure the antenna is properly shielded

2. - G0B13

Where should lightning arrestors be located?

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

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
B	The upper frequency portion
C	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
D	The lower frequency portion

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	100 feet
C	200 feet
D	50 feet

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	1.8 kHz
C	3 kHz
D	2.8 kHz

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least three Volunteer Examiners of General class or higher
B	At least three Volunteer Examiners of Technician class
C	At least two Volunteer Examiners of Technician class or higher
D	At least two Volunteer Examiners of General class or higher

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Only in the non-phone Extra Class segments of the bands
B	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
C	On any band segment where digital operation is permitted
D	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Frequency modulation
B	Single sideband
C	Double sideband
D	Single phase modulation

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	Approximately 6 kHz
B	2 kHz to 3 kHz
C	5 Hz to 50 Hz
D	150 Hz to 500 Hz

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	AR
D	KN

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To allow each station to calibrate their frequency display
B	To follow standard radiogram structure
C	To be sure the contact will count for award programs
D	To allow each station to operate according to conditions

12. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Joining an existing contact is not possible, PACTOR connections are limited to two stations
B	Send a NAK code
C	Send broadcast packets containing your call sign while in MONITOR mode
D	Transmit a steady carrier until the PACTOR protocol times out and disconnects

13. - G3A09

How can high geomagnetic activity benefit radio communications?

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

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

Select	Answer
A	180 miles
B	12,000 miles
C	1,200 miles
D	2,500 miles

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Ground waves are absorbing much of the signal
B	The E region is not present
C	Energy is scattered into the skip zone through several different paths
D	The ionospheric region involved is unstable

16. - G4A07

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

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

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Linearity
B	Percentage of carrier phase shift
C	Percentage of frequency modulation
D	Percentage of suppression of the carrier and undesired sideband for SSB

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	Solder flux will prevent a low conductivity connection
C	A soldered joint will likely be destroyed by the heat of a lightning strike
D	All these choices are correct

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	14.347 MHz to 14.647 MHz
B	14.3455 MHz to 14.3485 MHz
C	14.347 MHz to 14.350 MHz
D	14.344 MHz to 14.347 MHz

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The battery charging system
B	The fuel delivery system
C	All these choices are correct
D	The control computers

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Admittance
C	Reluctance
D	Conductance

22. - G5B08

What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120 volts?

Select	Answer
A	169.7 volts
B	240.0 volts
C	339.4 volts
D	84.8 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 capacitance
B	Capacitive coupling
C	Displacement current coupling
D	Mutual inductance

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. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	Its conductivity
B	Its thickness
C	The ratio of outer diameter to inner diameter
D	The composition, or “mix,” of materials used

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 11
B	Symbol 7
C	Symbol 6
D	Symbol 1

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	16
B	3
C	8
D	6

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Variable output frequency with the stability of a crystal oscillator
B	Relatively high-power output
C	Extremely narrow tuning range
D	Pure sine wave output

29. - G8A04

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

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

30. - G8B02

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

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

31. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal is 3 times the noise level of an equivalent SSB signal
B	The signal is 3 dB over S9
C	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
D	The signal is S3 (weak signals)

32. - G9A01

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

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

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	84 feet
C	263 feet
D	42 feet

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The number of directors versus the number of reflectors
C	The relative position of the driven element with respect to the reflectors and directors
D	The power radiated in the major lobe compared to that in the opposite direction

35. - G9D09

What is the primary use of a Beverage antenna?

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

Figure G7-1