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

2. - G0B09

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

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

3. - G1A08

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

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

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country has a formal third-party agreement filed with the FCC
B	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
C	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1500 watts PEP output
B	1000 watts PEP output
C	2000 watts PEP output
D	200 watts PEP output

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	They must have a letter from the FCC showing they once held an amateur or commercial license
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
D	Contact the FCC to have the license reinstated

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 42 through 45
B	Anywhere in the band
C	Channels 1 through 4
D	No part

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Always use multiple sets of phonetics during check-in
B	Have a backup frequency in case of interference or poor conditions
C	All these choices are correct
D	Transmit the full net roster at the beginning of every session

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	The fastest speed at which you are comfortable copying, but no slower than the CQ
C	At the standard calling speed of 10 wpm
D	The fastest speed at which you are comfortable copying, but no faster than the CQ

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Able, Baker, Charlie, Dog
B	Alpha, Bravo, Charlie, Delta
C	America, Boston, Canada, Denmark
D	Adam, Boy, Charles, David

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	Computer time accurate to within approximately 1 second
B	A vertically polarized antenna
C	Receiver attenuator set to -12 dB
D	A special hardware modem

13. - G3A06

What is a geomagnetic storm?

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

14. - G3B10

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

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

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Scatter propagation occurs only at night
B	Phone signals have high intelligibility
C	Signals have a fluttering sound
D	There are very large, sudden swings in signal strength

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To improve frequency accuracy by allowing variable frequency output (VFO) operation
B	To allow transmitting on two frequencies at once
C	To permit full duplex operation -- that is, transmitting and receiving at the same time
D	To transmit on one frequency and listen on another

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The attenuated RF output of the transmitter
B	The local oscillator of the transmitter
C	An external RF oscillator
D	The transmitter balanced mixer output

18. - G4C06

What is a possible effect of a resonant ground connection?

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

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 100 times more powerful
C	It is 20 times less powerful
D	It is 10 times less powerful

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Q of the antenna will be very low
B	Harmonic radiation may increase
C	Operating bandwidth may be very limited
D	Short antennas are more likely to cause distortion of transmitted signals

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	The circuit radiates all its energy in the form of radio waves
B	Resistance is cancelled
C	Current and voltage are equal
D	Inductive reactance and capacitive reactance cancel

22. - G5B03

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

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

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	3.3 millihenries
B	30 millihenries
C	0.30 henries
D	3.3 henries

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Comparatively low cost
B	High capacitance for given volume
C	High stability
D	Tight tolerance

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	RCA Phono
B	BNC
C	Type N
D	PL-259

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 1
B	Symbol 5
C	Symbol 4
D	Symbol 11

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier in which the output preserves the input waveform
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	The need for high resolution analog-to-digital converters is eliminated
B	All types of modulation can be created with appropriate processing
C	Automatic conversion of the signal from digital to analog
D	Minimum detectible signal level is reduced

29. - G8A12

What is QPSK modulation?

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

30. - G8B13

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

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

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Volumetric
B	Binary
C	Varicode
D	Viterbi

32. - G9A07

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

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

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface or buried a few inches below the ground
B	At the center of the antenna
C	Parallel to the antenna element
D	As high as possible above the ground

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 3 dB higher
B	Approximately 6 dB higher
C	Approximately 9 dB higher
D	Approximately 1.5 dB higher

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	Broadside to the plane of the halo
B	Opposite the feed point
C	Omnidirectional in the plane of the halo
D	On the same side as the feed point

Figure G7-1