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 duty cycle
C	Its power density
D	Its frequency

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	All these choices are correct
B	The generator must be insulated from ground
C	The generator should be operated in a well-ventilated area
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

3. - G1A09

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

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

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	Only “Q” signals are permitted
B	They are limited to those expressly listed in Part 97 of the FCC rules
C	They may be used if they do not obscure the meaning of a message
D	They are not permitted

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1200 watts PEP output
B	200 watts PEP output
C	1500 watts PEP output
D	1000 watts PEP output

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Those of both the remote station’s country and the FCC
B	Only those of the remote station’s country
C	Only those of the FCC
D	Those of the remote station’s country and the FCC’s third-party regulations

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	All these choices are correct
C	When using a band where the Amateur Service is secondary
D	When operating within one mile of an FCC Monitoring Station

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only stations in Germany
B	Any stations outside the lower 48 states
C	Only contest stations
D	Any caller is welcome to respond

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Acknowledge the station in distress and determine what assistance may be needed
B	Immediately cease all transmissions
C	Inform your local emergency coordinator
D	Immediately decrease power to avoid interfering with the station in distress

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	An operator must activate a manual send/receive switch before and after every transmission
B	Automatic keyers, instead of hand keys, are used to send Morse code
C	Transmitting stations can receive between code characters and elements
D	Breaking stations send the Morse code prosign “BK”

11. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Transmission using Quick Response Protocol
C	Low-power transmit operation
D	Traffic relay procedure net operation

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide high-speed data services during an emergency or community event
B	To provide DX spotting reports to aid contesters and DXers
C	To provide real time propagation data by monitoring amateur radio transmissions worldwide
D	To provide FM repeater coverage in remote areas

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A thunderstorm that affects radio propagation
B	A sudden drop in the solar flux index
C	A temporary disturbance in Earth’s geomagnetic field
D	Ripples in the geomagnetic force

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

15. - G3C04

What does the term “critical angle” mean, as applied to radio wave propagation?

Select	Answer
A	The short path azimuth of a distant station
B	The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
C	The long path azimuth of a distant station
D	The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	All these choices are correct
B	Increase power transfer from the transmitter to the feed line
C	Reduce the SWR in the feed line to the antenna
D	Reduce the power dissipation in the feedline to the antenna

17. - G4B01

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

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

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A CW signal at a nearly pure audio frequency
B	On-and-off humming or clicking
C	A chirpy CW signal
D	Severely distorted audio

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 1 kHz below the edge of the segment
B	At least 3 kHz below the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 3 kHz above the edge of the segment

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Shunt
B	Series-parallel
C	Full-wave bridge
D	Bypass

21. - G5A08

What is impedance?

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

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	245 volts
B	346 volts
C	692 volts
D	173 volts

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	0.33 microfarads
B	300 microfarads
C	33.3 microfarads
D	3.0 microfarads

24. - G6A07

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

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

25. - G6B01

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

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

26. - G7A13

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

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

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To keep the carrier on frequency
B	To cut off the final amplifier during standby periods
C	To limit the modulation index
D	To eliminate self-oscillations

28. - G7C06

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

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

29. - G8A12

What is QPSK modulation?

Select	Answer
A	Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits
B	Modulation using quadra-pole sideband keying to generate spread spectrum signals
C	Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
D	Modulation using quasi-parallel to serial conversion to reduce bandwidth

30. - G8B13

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

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

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	432 MHz
B	2.4 GHz
C	10.7 GHz
D	902 MHz

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an odd number of electrical quarter wavelengths long
B	The feed line must be an even number of physical half wavelengths long
C	The antenna feed point must be at DC ground potential
D	The antenna feed point impedance must be matched to the characteristic impedance of the feed line

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

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1 wavelength
B	3/4 wavelength
C	1/4 wavelength
D	1/2 wavelength

35. - G9D09

What is the primary use of a Beverage antenna?

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

Figure G7-1