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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?

SelectAnswer
APerform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
BPerform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
CContact the FCC for permission to transmit
DUse an FCC-approved band-pass filter

2. - G0B11

Which of the following is required for lightning protection ground rods?

SelectAnswer
AThey must be bonded together with all other grounds
BThey must be bonded to all buried water and gas lines
CLightning grounds must be connected to all ungrounded wiring
DBends in ground wires must be made as close as possible to a right angle

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

SelectAnswer
AThe entire band
B28.000 MHz to 28.025 MHz only
C28.025 MHz to 28.300 MHz only
D28.000 MHz to 28.300 MHz only

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

SelectAnswer
AUnder no circumstances, FCC rules take priority
BAt any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
COnly when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
DAmateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

SelectAnswer
A1500 watts PEP output
B1000 watts PEP output
C2000 watts PEP output
D100 watts PEP output

6. - G1D04

Who must observe the administration of a Technician class license examination?

SelectAnswer
AAt least two Volunteer Examiners of General class or higher
BAt least three Volunteer Examiners of General class or higher
CAt least two Volunteer Examiners of Technician class or higher
DAt least three Volunteer Examiners of Technician class

7. - G1E07

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

SelectAnswer
AChannels 42 through 45
BAnywhere in the band
CChannels 1 through 4
DNo part

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

SelectAnswer
ALower sideband is the only sideband legal on these frequency bands
BBecause it is fully compatible with an AM detector
CIt is commonly accepted amateur practice
DLower sideband is more efficient than upper sideband at these frequencies

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

SelectAnswer
AListen for 2 minutes before calling CQ
BSend the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
CSend “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
DSend “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

SelectAnswer
AOperating full break-in
BNo US stations should call
CListening only for a specific station or stations
DClosing station now

11. - G2D08

Why do many amateurs keep a station log?

SelectAnswer
AThe FCC requires a log of all international contacts
BTo help with a reply if the FCC requests information about your station
CThe log provides evidence of operation needed to renew a license without retest
DThe FCC requires a log of all international third-party traffic

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

SelectAnswer
ARespond when the station broadcasts its SSID
BTransmit a connect message on the station’s published frequency
CSend QRL in Morse code
DSend an email to the system control operator

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?

SelectAnswer
A1 to 2 hours
B20 to 40 hours
C28 days
D8 minutes

14. - G3B02

What factors affect the MUF?

SelectAnswer
ASolar radiation and ionospheric disturbances
BAll these choices are correct
CPath distance and location
DTime of day and season

15. - G3C03

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

SelectAnswer
ABecause it is the highest
BBecause of temperature inversions
CBecause of the Doppler effect
DBecause it is the densest

16. - G4A12

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

SelectAnswer
ATo transmit on one frequency and listen on another
BTo permit full duplex operation -- that is, transmitting and receiving at the same time
CTo improve frequency accuracy by allowing variable frequency output (VFO) operation
DTo allow transmitting on two frequencies at once

17. - G4B01

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

SelectAnswer
AAn ammeter
BAn oscilloscope
CA signal generator
DAn ohmmeter

18. - G4C09

How can the effects of ground loops be minimized?

SelectAnswer
ABond equipment enclosures together
BConnect all ground conductors in series
CAvoid using lock washers and star washers when making ground connections
DConnect the AC neutral conductor to the ground wire

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?

SelectAnswer
AIt is 20 times less powerful
BIt is 100 times more powerful
CIt is 20 times more powerful
DIt is 10 times less powerful

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

SelectAnswer
ATo prevent overload by regulating the charging voltage
BTo prevent damage to the battery due to excessive voltage at high illumination levels
CTo limit the current flowing from the panel to a safe value
DTo prevent discharge of the battery through the panel during times of low or no illumination

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

SelectAnswer
AAll these choices are correct
BA length of transmission line
CA transformer
DA Pi-network

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

SelectAnswer
A24 watts
B60 watts
C6 watts
D2.4 watts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

SelectAnswer
AAn inductor in parallel
BAn inductor in series
CA capacitor in series
DA capacitor in parallel

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

SelectAnswer
AIt becomes capacitive
BHarmonics are generated
CIts reactance increases
DCatastrophic failure is likely

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

SelectAnswer
A50 MHz
B40 GHz
C500 MHz
D4 GHz

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

SelectAnswer
ASymbol 5
BSymbol 4
CSymbol 1
DSymbol 2

27. - G7B09

What determines the frequency of an LC oscillator?

SelectAnswer
AThe number of stages in the counter
BThe inductance and capacitance in the tank circuit
CThe time delay of the lag circuit
DThe number of stages in the divider

28. - G7C07

What term specifies a filter’s attenuation inside its passband?

SelectAnswer
AReturn loss
BUltimate rejection
CInsertion loss
DQ

29. - G8A12

What is QPSK modulation?

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

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

SelectAnswer
AIt improves impedance matching of the antenna
BIt results in the best signal-to-noise ratio
CIt minimizes power consumption in the receiver
DIt is required by FCC rules

31. - G8C02

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

SelectAnswer
ASSB-SC
BMFSK16
CPSK31
DWSPR

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

SelectAnswer
AThe distance between the centers of the conductors and the length of the line
BThe radius of the conductors and the frequency of the signal
CThe distance between the centers of the conductors and the radius of the conductors
DThe frequency of the signal and the length of the 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?

SelectAnswer
AAntenna height has no effect on the pattern
BIf the antenna is too high, the pattern becomes unpredictable
CIf the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
DIf the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

SelectAnswer
AIt does not require the driven element to be insulated from the boom
BAll these choices are correct
CIt does not require any inductors or capacitors
DIt is useful for matching multiband antennas

35. - G9D03

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

SelectAnswer
AOpposite the feed point
BOn the same side as the feed point
COmnidirectional in the plane of the halo
DBroadside to the plane of the halo

Figure G7-1