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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
B	Contact the FCC for permission to transmit
C	Use an FCC-approved band-pass filter
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B13

Where should lightning arrestors be located?

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

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	All HF bands
B	60 meters, 30 meters, 17 meters, and 12 meters
C	80 meters, 40 meters, 20 meters, and 15 meters
D	All HF bands except 160 meters and 10 meters

4. - G1B03

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

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

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	ERP of 100 watts PEP with respect to a dipole
B	ERP of 100 watts PEP with respect to an isotropic antenna
C	1500 watts PEP
D	10 watts RMS

6. - G1D09

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

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

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	These frequencies are set aside for emergency operations
B	These frequencies are set aside for bulletins from the FCC
C	A system of automatic digital stations operates on those frequencies
D	A system of propagation beacon stations operates on those frequencies

8. - G2A04

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

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

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	3 kHz to 6 kHz
B	5 Hz to 50 Hz
C	150 Hz to 500 Hz
D	1 kHz to 3 kHz

10. - G2C08

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

Select	Answer
A	BK
B	KN
C	SK
D	AR

11. - G2D09

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

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

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

Select	Answer
A	8 minutes
B	28 days
C	20 to 40 hours
D	1 to 2 hours

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	A slightly delayed echo might be heard
B	Periodic fading approximately every 10 seconds
C	Signal strength increased by 3 dB
D	The signal might be cancelled causing severe attenuation

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The D region
B	The F1 region
C	The E region
D	The F2 region

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By clipping noise peaks
B	By redirecting noise pulses into a filter capacitor
C	By reducing receiver gain during a noise pulse
D	By temporarily increasing received bandwidth

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	Antenna front-to-back ratio
C	RF interference
D	Radio wave propagation

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	Corrosion of the ground rod
B	A ground loop
C	Overheating of ground straps
D	High RF voltages on the enclosures of station equipment

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Prevent distortion of voice signals
B	Decrease high-frequency voice output to prevent out-of-band operation
C	Increase the apparent loudness of transmitted voice signals
D	Increase transmitter bass response for more natural-sounding SSB signals

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
B	Drawing more than 50 watts from this socket could cause the engine to overheat
C	The socket’s wiring may be inadequate for the current drawn by the transceiver
D	The socket is not wired with an RF-shielded power cable

21. - G5A06

How does a capacitor react to AC?

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

22. - G5B06

What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

Select	Answer
A	353.5 watts
B	100 watts
C	1.4 watts
D	400 watts

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	Displacement current coupling
B	Capacitive coupling
C	Mutual capacitance
D	Mutual inductance

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.1 volt
B	0.7 volts
C	0.3 volts
D	1.0 volts

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Metal Monolayer Integrated Circuit
B	Multi-Mode Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Monolithic Microwave Integrated Circuit

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. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	A wide range of filter bandwidths and shapes can be created
C	Mixing products are greatly reduced
D	The DSP filter is much more effective at VHF frequencies

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Single sideband
B	Phase modulation
C	Vestigial sideband
D	Frequency modulation

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	RF input
B	Image frequency
C	Local oscillator
D	Beat frequency oscillator

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Insufficient modulation
B	Backscatter propagation
C	Long path propagation
D	Overmodulation

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases the accuracy of SWR measured at the input to the line
B	Higher loss reduces SWR measured at the input to the line
C	Transmission line loss does not affect the SWR measurement
D	Higher loss increases SWR measured at the input to the line

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It has a pair of lobes on one side of the antenna and a single lobe on the other side
B	It is a figure-eight at right angles to the antenna
C	It is a figure-eight off both ends of the antenna
D	It is a circle (equal radiation in all directions)

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Gain increases
B	Beamwidth increases
C	Resonant frequency is lower
D	Front-to-back ratio decreases

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows quick selection of vertical or horizontal polarization
B	It narrows the main lobe in elevation
C	It allows simultaneous vertical and horizontal polarization
D	It narrows the main lobe in azimuth