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US Amateur Radio - General (Element 3, 2019-2023) Practice Test

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1. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

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

2. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

SelectAnswer
AAll these choices are correct
BUnground the base of the tower
CMake sure all circuits that supply power to the tower are locked out and tagged
DNotify the electric company that a person will be working on the tower

3. - G1A14

Which of the following may apply in areas under FCC jurisdiction outside of ITU Region 2?

SelectAnswer
AStation identification may have to be in a language other than English
BMorse code may not be permitted
CFrequency allocations may differ
DDigital transmission may not be permitted

4. - G1B12

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
BWhen the contact is with amateurs in any country as long as the communication is conducted in English
COnly when the foreign country is a member of the International Amateur Radio Union
DOnly when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

SelectAnswer
A1200 baud
B300 baud
C56 kilobaud
D19.6 kilobaud

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

SelectAnswer
A12 years
B18 years
CThere is no age limit
D21 years

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24. 930 and 28.200 MHz?

SelectAnswer
AThese frequencies are set aside for emergency operations
BA system of propagation beacon stations operates on those frequencies
CA system of automatic digital stations operates on those frequencies 
DThese frequencies are set aside for bulletins from the FCC

8. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

SelectAnswer
ADouble sideband
BUpper sideband
CLower sideband
DVestigial sideband

9. - G2B01

Which of the following is true concerning access to frequencies?

SelectAnswer
AContest operations must always yield to non-contest use of frequencies
BNets always have priority
CQSOs in progress always have priority
DExcept during emergencies, no amateur station has priority access to any frequency

10. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

SelectAnswer
A100 percent copy
BReport was read from an S meter rather than estimated
CKey clicks
DChirpy or unstable signal

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

SelectAnswer
ASubmit a log to the contest sponsor
BSend a QSL card to the stations worked, or QSL via Logbook of The World
CAll these choices are correct
DIdentify your station per normal FCC regulations

12. - G2E13

Which communication system sometimes uses the internet to transfer messages?

SelectAnswer
ARTTY
BSKYWARN
CARES
DWinlink

13. - G3A11

How long does it take charged particles from coronal mass ejections to affect radio propagation on Earth?

SelectAnswer
A4 to 8 minutes
B14 days
C20 to 40 hours
D28 days

14. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

SelectAnswer
ASend a series of dots on the band and listen for echoes from your signal
BListen for signals from an international beacon in the frequency range you plan to use
CCheck the strength of signals in the MF AM broadcast band
DCheck the strength of TV signals from western Europe

15. - G3C05

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

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

16. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

SelectAnswer
ATo reduce harmonic radiation
BTo increase overall efficiency
CTo balance the transmitter audio frequency response
DTo reduce distortion due to excessive drive

17. - G4B01

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

SelectAnswer
AAn ohmmeter
BAn ammeter
CAn oscilloscope
DA signal generator

18. - G4C01

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

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

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

SelectAnswer
A14.347 to 14.350 MHz
B14.347 to 14.647 MHz
C14.344 to 14.347 MHz
D14.3455 to 14.3485 MHz

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

SelectAnswer
AHarmonic radiation may increase
BShort antennas are more likely to cause distortion of transmitted signals
COperating bandwidth may be very limited
DShort antennas can only receive circularly polarized signals

21. - G5A09

What unit is used to measure reactance?

SelectAnswer
AFarad
BAmpere
CSiemens
DOhm

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

SelectAnswer
AThe RMS value
BThe reciprocal of the RMS value
CThe peak value
DThe peak-to-peak value

23. - G5C03

Which of the following components increases the total resistance of a resistor?

SelectAnswer
AA series resistor
BA series capacitor
CA parallel capacitor
DA parallel resistor

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead-acid battery?

SelectAnswer
A12 volts
B10.5 volts
C8.5 volts
D6 volts

25. - G6B12

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

SelectAnswer
AType N
BBNC
CPL-259
DRCA Phono

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

SelectAnswer
A90 degrees
B270 degrees
C360 degrees
D180 degrees

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

SelectAnswer
AA filter and an amplifier operating in a feedback loop
BAn amplifier and a divider
CA circulator and a filter operating in a feed-forward loop
DA frequency multiplier and a mixer

28. - G7C05

Which of the following is an advantage of a direct digital synthesizer (DDS)?

SelectAnswer
AVariable frequency with the stability of a crystal oscillator
BRelatively low power consumption
CRelatively high-power output
DWide tuning range and no need for band switching

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

SelectAnswer
APhase modulation
BPhase transformation
CPhase inversion
DPhase convolution

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

SelectAnswer
AReactance modulator
BPre-emphasis network
CMultiplier
DMixer

31. - G8C02

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

SelectAnswer
AOlivia
BSSB-SC
CWSPR
DPSK31

32. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

SelectAnswer
A25 and 30 ohms
B80 and 100 ohms
C50 and 75 ohms
D500 and 750 ohms

33. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

SelectAnswer
ALower feed-point impedance
BShorter radials
CLower ground reflection losses
DLower radiation resistance

34. - G9C09

How does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

SelectAnswer
AApproximately 3 dB higher
BApproximately 1.5 dB higher
CApproximately 9 dB higher
DApproximately 6 dB higher

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/3 wavelength in circumference) have nulls in its radiation pattern?

SelectAnswer
ABroadside and in the plane of the loop
BBroadside to the loop
CIn the plane of the loop
DElectrically small loops are omnidirectional