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. - G0A10

What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
B	Change to a non-polarized antenna with higher gain
C	All these choices are correct
D	Use an antenna with a higher front-to-back ratio

2. - G0B08

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

Select	Answer
A	All these choices are correct
B	Notify the electric company that a person will be working on the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	Unground the base of the tower

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	21300 kHz
B	18155 kHz
C	14250 kHz
D	24900 kHz

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	21.08 MHz to 21.09 MHz
B	On any frequency if power is less than 1 watt
C	On any frequency if transmissions are in Morse code
D	28.20 MHz to 28.30 MHz

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	56 kilobaud
B	300 baud
C	19.6 kilobaud
D	1200 baud

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment except 30 meters and 60 meters
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	Only on the Technician band segments until you have a receipt for the FCC application fee payment
D	On any General or Technician class band segment

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	The third party is not a US citizen
B	The third party’s amateur license has been revoked and not reinstated
C	The third party is speaking in a language other than English
D	All these choices are correct

8. - G2A04

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

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

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
B	Decrease power and continue to transmit
C	Switch to the opposite sideband
D	Advise the interfering stations that you are on the frequency and that you have priority

10. - G2C08

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

Select	Answer
A	AR
B	BK
C	KN
D	SK

11. - G2D04

Which of the following describes an azimuthal projection map?

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

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	An amateur radio wireless network to send and receive email on the internet
B	A form of Packet Radio
C	All of the above
D	A wireless network capable of both VHF and HF band operation

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Rotation of the Sun’s surface layers around its axis
B	Cyclic variation in Earth’s radiation belts
C	Long term oscillations in the upper atmosphere
D	The position of the Moon in its orbit

14. - G3B07

What does LUF stand for?

Select	Answer
A	Lowest Usable Frequency for communications to any point outside a 100-mile radius
B	Lowest Usable Frequency during the past 60 minutes
C	The Lowest Usable Frequency during a 24-hour period
D	The Lowest Usable Frequency for communications between two specific points

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because of temperature inversions
B	Because it is the densest
C	Because of the Doppler effect
D	Because it is the highest

16. - G4A05

Why is automatic level control (ALC) used with an RF power amplifier?

Select	Answer
A	To prevent excessive drive
B	To reduce harmonic radiation
C	To increase overall efficiency
D	To balance the transmitter audio frequency response

17. - G4B01

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

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

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass capacitor
B	Forward-biased diode
C	Reverse-biased diode
D	Bypass inductor

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	7.178 MHz to 7.184 MHz
B	7.175 MHz to 7.178 MHz
C	7.178 MHz to 7.181 MHz
D	7.1765 MHz to 7.1795 MHz

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the battery using insulated heavy duty balanced transmission line
B	To the alternator or generator using heavy-gauge wire
C	To the battery using heavy-gauge wire
D	To the alternator or generator using insulated heavy duty balanced transmission line

21. - G5A08

What is impedance?

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

22. - G5B08

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

Select	Answer
A	240.0 volts
B	84.8 volts
C	169.7 volts
D	339.4 volts

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	An inductor in series
B	A capacitor in parallel
C	An inductor in parallel
D	A capacitor in series

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Saturation and cutoff
B	Peak and valley current points
C	The active region (between cutoff and saturation)
D	Enhancement and depletion modes

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	By creating an impedance in the current’s path
B	Ferrites expel magnetic fields
C	By creating an out-of-phase current to cancel the common-mode current
D	It converts common-mode current to differential mode current

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 1
C	Symbol 2
D	Symbol 11

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is low when either or both inputs are high
C	Output is high only when both inputs are high
D	Output is high when either or both inputs are low

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	Zero
B	45 degrees
C	180 degrees
D	90 degrees

29. - G8A05

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

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

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	416.7 Hz
C	101.75 Hz
D	5 kHz

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is vertical, signal strength is intensity, time is horizontal
B	Frequency is horizontal, signal strength is intensity, time is vertical
C	Frequency is horizontal, signal strength is vertical, time is intensity
D	Frequency is vertical, signal strength is horizontal, time is intensity

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation increases
B	Attenuation decreases
C	Attenuation is independent of frequency
D	Attenuation follows Marconi’s Law of Attenuation

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

Select	Answer
A	It must be longer than 1 wavelength
B	It is more effective on the lower HF bands than on the higher bands
C	Station equipment may carry significant RF current
D	It produces only vertically polarized radiation

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBd is 1.25 dBd lower
B	Gain in dBi is 2.15 dB higher
C	Gain in dBi is 2.15 dB lower
D	Gain in dBd is 1.25 dBd higher

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Approximately 50 ohms
B	Very low
C	Very high
D	Approximately 300 ohms

Figure G7-1