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

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1. - G0A12

What stations are subject to the FCC rules on RF exposure?

SelectAnswer
AOnly stations transmitting more than 500 watts PEP
BAll commercial stations; amateur radio stations are exempt
CAll stations with a time-averaged transmission of more than one milliwatt
DOnly stations with antennas lower than one wavelength above the ground

2. - G0B11

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

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

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

SelectAnswer
A21.275 MHz to 21.300 MHz
BAll these choices are correct
C28.000 MHz to 28.025 MHz
D7.125 MHz to 7.175 MHz

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

SelectAnswer
A50 feet
B200 feet
C100 feet
D250 feet

5. - G1C01

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

SelectAnswer
A2000 watts PEP output
B200 watts PEP output
C1000 watts PEP output
D1500 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?

SelectAnswer
AThey must have a letter from the FCC showing they once held an amateur or commercial license
BThere are no requirements other than being able to show a copy of the expired license
CThe applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
DContact the FCC to have the license reinstated

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

SelectAnswer
AAnywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
BOnly in the non-phone Extra Class segments of the bands
COn any band segment where digital operation is permitted
DAnywhere in the non-phone segments of the 10-meter or shorter wavelength bands

8. - G2A04

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

SelectAnswer
ADouble sideband
BLower sideband
CUpper sideband
DSuppressed sideband

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

SelectAnswer
AAttempt to resolve the interference problem with the other stations in a mutually acceptable manner
BSwitch to the opposite sideband
CAdvise the interfering stations that you are on the frequency and that you have priority
DDecrease power and continue to transmit

10. - G2C06

What does the term “zero beat” mean in CW operation?

SelectAnswer
AMatching the transmit frequency to the frequency of a received signal
BMatching the speed of the transmitting station
CSending without error
DOperating split to avoid interference on frequency

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

SelectAnswer
ARepeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
BSign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
CSay “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
DTransmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary

12. - G2E07

Which of the following is required when using FT8?

SelectAnswer
AReceiver attenuator set to -12 dB
BA special hardware modem
CA vertically polarized antenna
DComputer time accurate to within approximately 1 second

13. - G3A12

What does the K-index measure?

SelectAnswer
AThe short-term stability of Earth’s geomagnetic field
BThe solar radio flux at Boulder, Colorado
CThe relative position of sunspots on the surface of the Sun
DThe short-term stability of the Sun’s magnetic field

14. - G3B08

What does MUF stand for?

SelectAnswer
AThe Minimum Usable Frequency for communications between two points
BThe Maximum Usable Frequency during a 24-hour period
CThe Maximum Usable Frequency for communications between two points
DThe Minimum Usable Frequency during a 24-hour period

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

SelectAnswer
AThe F1 region
BThe D region
CThe F2 region
DThe E region

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

SelectAnswer
AReceived frequency may become unstable
BReceived frequency may shift several kHz
CReceived signals may become distorted
DCW signals may become severely attenuated

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
BGeneration of harmonics which interfere with frequency readings
CAll these choices are correct
DReceived power that interferes with SWR readings

18. - G4C11

What technique helps to minimize RF “hot spots” in an amateur station?

SelectAnswer
APlacing low-pass filters on all feed lines
BBonding all equipment enclosures together
CBuilding all equipment in a metal enclosure
DUsing surge suppressor power outlets

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?

SelectAnswer
AAt least 1 kHz above the edge of the segment
BAt least 3 kHz above the edge of the segment
CAt least 3 kHz below the edge of the segment
DAt least 1 kHz below the edge of the segment

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

SelectAnswer
ATo electrically lengthen a physically short antenna
BTo increase the power handling capacity of a whip antenna
CTo reduce radiation resistance
DTo lower the radiation angle

21. - G5A08

What is impedance?

SelectAnswer
AThe ratio of current to voltage
BThe product of current and voltage
CThe ratio of voltage to current
DThe product of current and reactance

22. - G5B12

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

SelectAnswer
A346 volts
B245 volts
C692 volts
D173 volts

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

SelectAnswer
A144 to 1
B3.5 to 1
C12 to 1
D24 to 1

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

SelectAnswer
ATight tolerance
BMuch less leakage than any other type
CHigh capacitance for a given volume
DInexpensive RF capacitor

25. - G6B12

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

SelectAnswer
ARCA Phono
BPL-259
CBNC
DType N

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

SelectAnswer
ASymbol 2
BSymbol 1
CSymbol 7
DSymbol 11

27. - G7B05

How many states does a 3-bit binary counter have?

SelectAnswer
A6
B3
C16
D8

28. - G7C14

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

SelectAnswer
AImage and harmonic
BUpper and lower half-power
CCutoff and rolloff
DPole and zero

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

SelectAnswer
APhase modulation
BPower modulation
CFrequency modulation
DAmplitude modulation

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

SelectAnswer
ADetection
BRolloff
CIntermodulation
DHeterodyning

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?

SelectAnswer
ALong path propagation
BBackscatter propagation
CInsufficient modulation
DOvermodulation

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

SelectAnswer
A5:1
BBetween 1:1 and 5:1 depending on the characteristic impedance of the line
C1:1
DBetween 1:1 and 5:1 depending on the reflected power at the transmitter

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

SelectAnswer
ACoil the radials
BLengthen the radials beyond one wavelength
CSlope the radials downward
DSlope the radials upward

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 number of elements on the boom
BThe physical length of the boom
CAll these choices are correct
DThe spacing of each element along the boom

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

SelectAnswer
AVery low
BApproximately 50 ohms
CApproximately 300 ohms
DVery high

Figure G7-1