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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

SelectAnswer
APosition the antenna along the edge of a wall to reduce parasitic radiation
BLocate the antenna close to your operating position to minimize feed-line radiation
CMake sure that MPE limits are not exceeded in occupied areas
DMake sure the antenna is properly shielded

2. - G0B07

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

SelectAnswer
AConfirm that the harness is rated for the weight of the climber and that it is within its allowable service life
BAlways hold on to the tower with one hand
CEnsure that all heavy tools are securely fastened to the harness
DAll these choices are correct

3. - G1A08

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

SelectAnswer
AAll HF bands
B80 meters, 40 meters, 20 meters, and 15 meters
C60 meters, 30 meters, 17 meters, and 12 meters
DAll HF bands except 160 meters and 10 meters

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

SelectAnswer
AThe FCC
BThe control operator
CThe ITU
DThe IEEE

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

SelectAnswer
A300 baud
B1200 baud
C19.6 kilobaud
D56 kilobaud

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

SelectAnswer
AAnyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
BOnly persons who once held an FCC issued Novice, Technician, or Technician Plus license
CAny person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
DAny person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

SelectAnswer
AThe control operator of the interrogating station must hold an Amateur Extra class license
BThe interrogating transmission must be made by another automatically controlled station
CThe station initiating the contact must be under local or remote control
DNo third-party traffic may be transmitted

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

SelectAnswer
AOnly one sideband is transmitted; the other sideband and carrier are suppressed
BSSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
COnly one sideband and the carrier are transmitted; the other sideband is suppressed
DSSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

SelectAnswer
AIdentify your station by transmitting your call sign at least 3 times
BAll these choices are correct
CFollow the voluntary band plan
DListen on the frequency for at least two minutes to be sure it is clear

10. - G2C01

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

SelectAnswer
ABreaking stations send the Morse code prosign “BK”
BAutomatic keyers, instead of hand keys, are used to send Morse code
CAn operator must activate a manual send/receive switch before and after every transmission
DTransmitting stations can receive between code characters and elements

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

SelectAnswer
AAll these choices are correct
BCompare signal strengths between the input and output of the repeater
CCompare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
DCompare vertical and horizontal signal strengths on the input frequency

12. - G2E15

Which of the following is a common location for FT8?

SelectAnswer
AApproximately 14.110 MHz to 14.113 MHz
BAnywhere in the CW portion of the band
CApproximately 14.074 MHz to 14.077 MHz
DAnywhere in the voice portion of the band

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
A20 to 40 hours
B28 days
C8 minutes
D1 to 2 hours

14. - G3B10

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

SelectAnswer
A2,500 miles
B12,000 miles
C1,200 miles
D180 miles

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

SelectAnswer
AThe F region is unstable during daylight hours
BThe D region absorbs signals at these frequencies during daylight hours
CThe E region is unstable during daylight hours
DThe F region absorbs signals at these frequencies during daylight hours

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

SelectAnswer
ATo restrict the transmitter voice bandwidth
BTo eliminate receiver interference from impulse noise sources
CTo remove interfering splatter generated by signals on adjacent frequencies
DTo reduce interference from carriers in the receiver passband

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

SelectAnswer
ADesensitization which can cause intermodulation products which interfere with impedance readings
BAll these choices are correct
CGeneration of harmonics which interfere with frequency readings
DReceived power that interferes with SWR readings

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

SelectAnswer
AYou receive reports of harmonic interference from your station
BThe SWR reading for one or more antennas is suddenly very high
CAn item of station equipment starts to draw excessive amounts of current
DYou receive reports of “hum” on your station’s transmitted signal

19. - G4D01

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

SelectAnswer
AIncrease the apparent loudness of transmitted voice signals
BPrevent distortion of voice signals
CIncrease transmitter bass response for more natural-sounding SSB signals
DDecrease high-frequency voice output to prevent out-of-band operation

20. - G4E08

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

SelectAnswer
ASeries-parallel
BFull-wave bridge
CBypass
DShunt

21. - G5A02

What is reactance?

SelectAnswer
AOpposition to the flow of direct current caused by resistance
BOpposition to the flow of alternating current caused by capacitance or inductance
CReinforcement of the flow of alternating current caused by capacitance or inductance
DReinforcement of the flow of direct current caused by resistance

22. - G5B03

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

SelectAnswer
A3200 watts
B200 watts
C0.5 watts
D400 watts

23. - G5C10

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

SelectAnswer
A30 millihenries
B0.30 henries
C3.3 henries
D3.3 millihenries

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

SelectAnswer
AThe resistor’s inductance could make circuit performance unpredictable
BThe resistor could overheat
CThe resistor’s tolerance value would not be adequate
DThe resistor’s internal capacitance would detune the circuit

25. - G6B08

How is an LED biased when emitting light?

SelectAnswer
AReverse biased
BForward biased
CAt the Zener voltage
DIn the tunnel-effect region

26. - G7A09

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

SelectAnswer
ASymbol 1
BSymbol 2
CSymbol 4
DSymbol 5

27. - G7B08

How is the efficiency of an RF power amplifier determined?

SelectAnswer
AMultiply the RF input power by the reciprocal of the RF output power
BAdd the RF input power to the DC output power
CDivide the RF output power by the DC input power
DDivide the DC input power by the DC output power

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

SelectAnswer
APole and zero
BImage and harmonic
CCutoff and rolloff
DUpper and lower half-power

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

SelectAnswer
ASignal distortion caused by insufficient collector current
BThe transmitter’s carrier is properly suppressed
CSignal distortion caused by excessive drive or speech levels
DThe transmitter’s automatic level control (ALC) is properly adjusted

30. - G8B03

What is another term for the mixing of two RF signals?

SelectAnswer
ASynthesizing
BPhase inversion
CHeterodyning
DFrequency inversion

31. - G8C15

What does an FT8 signal report of +3 mean?

SelectAnswer
AThe signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
BThe signal is 3 dB over S9
CThe signal is 3 times the noise level of an equivalent SSB signal
DThe signal is S3 (weak signals)

32. - G9A07

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

SelectAnswer
AThe feed line must be an even number of physical half wavelengths long
BThe antenna feed point must be at DC ground potential
CThe feed line must be an odd number of electrical quarter wavelengths long
DThe antenna feed point impedance must be matched to the characteristic impedance of the feed line

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

SelectAnswer
AIsotropic
BBi-directional in azimuth
CHemispherical
DOmnidirectional in azimuth

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

SelectAnswer
AThe spacing of each element along the boom
BThe number of elements on the boom
CThe physical length of the boom
DAll these choices are correct

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

SelectAnswer
AThey have poor harmonic rejection
BThey present low impedance on all design frequencies
CThey must be used with an antenna tuner
DThey must be fed with open wire line

Figure G7-1