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

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1. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

SelectAnswer
APerform a routine RF exposure evaluation and prevent access to any identified high exposure areas
BNotify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
CAll these choices are correct
DPost a copy of FCC Part 97.13 in the station

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

SelectAnswer
AOnly the ground wire
BAll wires
COnly the neutral wire
DOnly the hot wires

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

SelectAnswer
A80 meters, 40 meters, 20 meters, and 15 meters
B60 meters, 30 meters, 17 meters, and 12 meters
C160 meters, 60 meters, 15 meters, and 12 meters
D80 meters, 20 meters, 15 meters, and 10 meters

4. - G1B08

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

SelectAnswer
AWhen the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
BOnly 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
COnly 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
DOnly when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C10

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

SelectAnswer
A56 kilobaud
B300 baud
C1200 baud
D19.6 kilobaud

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

SelectAnswer
AWhenever they operate on any amateur frequency
BA special identifier is not required if their General class license application has been filed with the FCC
CWhenever they operate using Technician frequency privileges
DWhenever they operate using General class frequency privileges

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

SelectAnswer
ARegion 2
BRegion 1
CRegion 3
DRegion 4

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

SelectAnswer
ASuppressed sideband
BUpper sideband
CDouble sideband
DLower sideband

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

SelectAnswer
A150 Hz to 500 Hz
B5 Hz to 50 Hz
C1 kHz to 3 kHz
D3 kHz to 6 kHz

10. - G2C02

What should you do if a CW station sends “QRS?”

SelectAnswer
AIncrease your power
BSend slower
CChange frequency
DRepeat everything twice

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

SelectAnswer
ATo allow each station to calibrate their frequency display
BTo be sure the contact will count for award programs
CTo allow each station to operate according to conditions
DTo follow standard radiogram structure

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
BSend QRL in Morse code
CTransmit a connect message on the station’s published frequency
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
A8 minutes
B1 to 2 hours
C28 days
D20 to 40 hours

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. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

SelectAnswer
AThe ALC action distorts the signal
BALC will invert the modulation of the AFSK mode
CAll these choices are correct
DWhen using digital modes, too much ALC activity can cause the transmitter to overheat

17. - G4B01

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

SelectAnswer
AA signal generator
BAn ohmmeter
CAn oscilloscope
DAn ammeter

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

SelectAnswer
AForward-biased diode
BReverse-biased diode
CBypass capacitor
DBypass inductor

19. - G4D06

How much change in signal strength is typically represented by one S unit?

SelectAnswer
A15 dB
B12 dB
C6 dB
D18 dB

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

SelectAnswer
ATo the battery using insulated heavy duty balanced transmission line
BTo the alternator or generator using insulated heavy duty balanced transmission line
CTo the alternator or generator using heavy-gauge wire
DTo the battery using heavy-gauge wire

21. - G5A12

What occurs in an LC circuit at resonance?

SelectAnswer
AInductive reactance and capacitive reactance cancel
BCurrent and voltage are equal
CResistance is cancelled
DThe circuit radiates all its energy in the form of radio waves

22. - G5B03

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

SelectAnswer
A400 watts
B200 watts
C0.5 watts
D3200 watts

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

SelectAnswer
AThe input voltage is multiplied by 4
BAdditional resistance must be added in series with the primary to prevent overload
CThe input voltage is divided by 4
DAdditional resistance must be added in parallel with the secondary to prevent overload

24. - G6A07

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

SelectAnswer
APeak and valley current points
BSaturation and cutoff
CThe active region (between cutoff and saturation)
DEnhancement and depletion modes

25. - G6B04

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

SelectAnswer
A500 MHz
B40 GHz
C4 GHz
D50 MHz

26. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

SelectAnswer
AA series of DC pulses at twice the frequency of the AC input
BA sine wave at half the frequency of the AC input
CA series of DC pulses at the same frequency as the AC input
DA steady DC voltage

27. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C02

What output is produced by a balanced modulator?

SelectAnswer
AAudio with equalized frequency response
BDouble-sideband modulated RF
CAudio extracted from the modulation signal
DFrequency modulated RF

29. - G8A01

How is direct binary FSK modulation generated?

SelectAnswer
ABy reconfiguring the CW keying input to act as a tone generator
BBy changing an oscillator’s frequency directly with a digital control signal
CBy using a transceiver’s computer data interface protocol to change frequencies
DBy keying an FM transmitter with a sub-audible tone

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

SelectAnswer
A101.75 Hz
B60 kHz
C5 kHz
D416.7 Hz

31. - G8C15

What does an FT8 signal report of +3 mean?

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

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 frequency of the signal and the length of the line
DThe distance between the centers of the conductors and the radius of the conductors

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

SelectAnswer
A42 feet
B132 feet
C84 feet
D263 feet

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

SelectAnswer
AThe number of directors versus the number of reflectors
BThe ratio of forward gain to dipole gain
CThe relative position of the driven element with respect to the reflectors and directors
DThe power radiated in the major lobe compared to that in the opposite direction

35. - G9D09

What is the primary use of a Beverage antenna?

SelectAnswer
APortable direction finding at lower HF frequencies
BDirectional receiving for MF and low HF bands
CPortable direction finding at higher HF frequencies
DDirectional transmitting for low HF bands