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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	All these choices are correct
B	Its frequency
C	Its duty cycle
D	Its power density

2. - G0B07

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

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

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	160 meters
C	30 meters
D	12 meters

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	All these choices are correct
B	Observation of propagation and reception
C	Automatic identification of repeaters
D	Transmission of bulletins of general interest to amateur radio licensees

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the manufacturer of your equipment and the antenna used
B	You must keep a record of the date, time, frequency, power level, and stations worked
C	You must keep a record of all third-party traffic
D	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	365 days
B	180 days
C	30 days
D	For as long as your current license is valid

7. - G1E08

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

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

8. - G2A05

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

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

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	150 Hz to 500 Hz
D	5 Hz to 50 Hz

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am ready to receive
B	I am quitting for the day
C	There is interference on the frequency
D	You are sending too fast

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	Identify your station according to normal FCC regulations
B	Send a QSL card to the stations worked, or QSL via Logbook of The World
C	Submit a log to the contest sponsor
D	All these choices are correct

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	DSB
B	LSB
C	SSB
D	USB

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	A zero sunspot number indicates that radio propagation is not possible on any band
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency for communications between two points
B	The Minimum Usable Frequency during a 24-hour period
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency during a 24-hour period

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Chordal hop
B	Scatter
C	Faraday rotation
D	Short-path

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum plate current without exceeding maximum allowable grid current
B	Desired power output without exceeding maximum allowable plate current
C	Minimum SWR on the antenna
D	Highest plate voltage while minimizing grid current

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	An oscilloscope
B	A field strength meter
C	A wavemeter
D	A sidetone monitor

18. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Connect the center conductor to the shield of all cables to short circuit the RFI signal
B	Add an additional insulating jacket to the cable
C	Place a ferrite choke on the cable
D	Ground the center conductor of the audio cable causing the interference

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 4 times
B	Approximately 2 times
C	Approximately 8 times
D	Approximately 1.5 times

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To lower the radiation angle
B	To increase the power handling capacity of a whip antenna
C	To reduce radiation resistance
D	To electrically lengthen a physically short antenna

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance increases

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	400 watts
B	3200 watts
C	0.5 watts
D	200 watts

23. - G5C13

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

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

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Long life
B	Rapid recharge
C	High voltage
D	High discharge current

25. - G6B05

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

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

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Synchronous
B	Full-wave
C	Half-wave
D	Full-wave bridge

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The time delay of the lag circuit
C	The inductance and capacitance in the tank circuit
D	The number of stages in the divider

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	Input amplifier noise figure
B	Demodulator stage bandwidth
C	Input amplifier gain
D	All these choices are correct

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency transformation
B	Frequency modulation
C	Frequency conversion
D	Frequency convolution

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	5F1-3F2
B	2F1-F2
C	3F1-F2
D	All these choices are correct

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	PSK31
B	WSPR
C	MFSK16
D	SSB-SC

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:5
B	2:1
C	5:1
D	1:2

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
B	If the antenna is too high, the pattern becomes unpredictable
C	Antenna height has no effect on the pattern
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

34. - G9C09

In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

Select	Answer
A	Approximately 9 dB higher
B	Approximately 1.5 dB higher
C	Approximately 3 dB higher
D	Approximately 6 dB higher

35. - G9D06

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

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