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

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1. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

SelectAnswer
AAn SWR meter with a peak-reading function
BA receiver with digital signal processing (DSP) noise reduction
CAn oscilloscope with a high-stability crystal marker generator
DA calibrated field strength meter with a calibrated antenna

2. - G0B13

Where should lightning arrestors be located?

SelectAnswer
AOn the antenna, opposite the feed point
BAt the closest power pole ground electrode
CWhere the feed lines enter the building
DIn series with each ground lead

3. - G1A10

What portion of the 10-meter band is available for repeater use?

SelectAnswer
AThe portion between 28.3 MHz and 28.5 MHz
BThe entire band
CThe portion above 29.5 MHz
DThe portion between 28.1 MHz and 28.2 MHz

4. - G1B05

Which of the following one-way transmissions are permitted?

SelectAnswer
ARegular transmissions offering equipment for sale, if intended for amateur radio use
BTransmissions to assist with learning the International Morse code
CUnidentified test transmissions of less than 10 seconds in duration
DAll these choices are correct

5. - G1C10

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

SelectAnswer
A19.6 kilobaud
B1200 baud
C56 kilobaud
D300 baud

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

SelectAnswer
AOn any General or Technician class band segment except 30 meters and 60 meters
BOnly the Technician band segments until your upgrade is posted in the FCC database
COnly on the Technician band segments until you have a receipt for the FCC application fee payment
DOn any General or Technician class band segment

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

SelectAnswer
AThey must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
BThey must be for other licensed amateurs
CThey must relate to emergencies or disaster relief
DThe message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log

8. - G2A02

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

SelectAnswer
ADouble sideband
BUpper sideband
CSuppressed sideband
DLower sideband

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

SelectAnswer
A150 Hz to 500 Hz
BApproximately 6 kHz
C2 kHz to 3 kHz
D5 Hz to 50 Hz

10. - G2C09

What does the Q signal “QSL” mean?

SelectAnswer
ASend slower
BI have received and understood
CWe have already confirmed the contact
DWe have worked before

11. - G2D11

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

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

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

SelectAnswer
ALSB
BUSB
CDSB
DSSB

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

SelectAnswer
AIt disrupts signals on lower frequencies more than those on higher frequencies
BIt enhances propagation on all HF frequencies
CIt disrupts communications via satellite more than direct communications
DNone, because only areas on the night side of the Earth are affected

14. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

SelectAnswer
APropagation over the path on all HF frequencies is enhanced
BHF communications over the path are enhanced
CDouble-hop propagation along the path is more common
DPropagation via ordinary skywave communications is not possible over that path

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

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

SelectAnswer
ADesired power output without exceeding maximum allowable plate current
BMinimum plate current without exceeding maximum allowable grid current
CHighest plate voltage while minimizing grid current
DMinimum SWR on the antenna

17. - G4B13

Which of the following can be measured with an antenna analyzer?

SelectAnswer
AFront-to-back ratio of an antenna
BPower output from a transmitter
CGain of a directional antenna
DImpedance of coaxial cable

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

SelectAnswer
ASolder has too high a dielectric constant to provide adequate lightning protection
BSolder flux will prevent a low conductivity connection
CA soldered joint will likely be destroyed by the heat of a lightning strike
DAll these choices are correct

19. - G4D06

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

SelectAnswer
A12 dB
B6 dB
C15 dB
D18 dB

20. - G4E01

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

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

21. - G5A08

What is impedance?

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

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

SelectAnswer
A12 volts
B34 volts
C8.5 volts
D24 volts

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

SelectAnswer
AA capacitor in series
BAn inductor in series
CAn inductor in parallel
DA capacitor in parallel

24. - G6A02

What is an advantage of batteries with low internal resistance?

SelectAnswer
ARapid recharge
BHigh voltage
CLong life
DHigh discharge current

25. - G6B08

How is an LED biased when emitting light?

SelectAnswer
AIn the tunnel-effect region
BAt the Zener voltage
CReverse biased
DForward biased

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

SelectAnswer
ASymbol 11
BSymbol 6
CSymbol 1
DSymbol 7

27. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

SelectAnswer
AIF amplifier
BCarrier oscillator
CFilter
DRF amplifier

29. - G8A05

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

SelectAnswer
APhase modulation
BAmplitude modulation
CPower modulation
DFrequency modulation

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

SelectAnswer
AThe ratio
BThe sum and difference
CThe arithmetic product
DThe average

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

SelectAnswer
AThe connection is dropped
BPackets will be routed incorrectly
CThe checksum overflows
DEncoding reverts to the default character set

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

SelectAnswer
A1:4
B1:2
C4:1
D2:1

33. - G9B03

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

SelectAnswer
AIsotropic
BHemispherical
COmnidirectional in azimuth
DBi-directional in azimuth

34. - G9C11

What is a beta or hairpin match?

SelectAnswer
AA 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
BA series capacitor selected to cancel the inductive reactance of a folded dipole antenna
CA shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
DA section of 300-ohm twin-lead transmission line used to match a folded dipole antenna

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

SelectAnswer
AA vertical antenna placed between 1/4 and 1/2 wavelength above the ground
BA vertical dipole placed at approximately 1/2 wavelength above the ground
CA horizontal dipole placed at approximately 1/2 wavelength above the ground
DA horizontal dipole placed between 1/10 and 1/4 wavelength above the ground

Figure G7-1