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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 stations with a time-averaged transmission of more than one milliwatt
CAll commercial stations; amateur radio stations are exempt
DOnly stations with antennas lower than one wavelength above the ground

2. - G0B07

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

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

3. - G1A02

On which of the following bands is phone operation prohibited?

SelectAnswer
A17 meters
B160 meters
C30 meters
D12 meters

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

SelectAnswer
AOccasional retransmission of weather and propagation forecast information from US government stations
BAutomatic retransmission of other amateur signals by any amateur station
CEncrypted messages, if not intended to facilitate a criminal act
DUnidentified transmissions of less than 10 seconds duration for test purposes only

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

SelectAnswer
A2.8 kHz
B1.8 kHz
C3 kHz
D5.6 kHz

6. - G1D01

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

SelectAnswer
AAny 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
BAnyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
CAny 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
DOnly persons who once held an FCC issued Novice, Technician, or Technician Plus license

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
CAnywhere in the non-phone segments of the 10-meter or shorter wavelength bands
DOn any band segment where digital operation is permitted

8. - G2A02

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

SelectAnswer
ALower sideband
BUpper sideband
CSuppressed sideband
DDouble sideband

9. - G2B05

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

SelectAnswer
AApproximately 6 kHz
B5 Hz to 50 Hz
C150 Hz to 500 Hz
D2 kHz to 3 kHz

10. - G2C09

What does the Q signal “QSL” mean?

SelectAnswer
AWe have already confirmed the contact
BWe have worked before
CI have received and understood
DSend slower

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

SelectAnswer
AToward the rising sun
BToward the north
C180 degrees from the station’s short-path heading
DAlong the gray line

12. - G2E04

Which of the following is good practice when choosing a transmitting frequency to answer a station calling CQ using FT8?

SelectAnswer
AAlways call on the station’s frequency
BCall on any frequency in the waterfall except the station’s frequency
CFind a clear frequency during the same time slot as the calling station
DFind a clear frequency during the alternate time slot to the calling station

13. - G3A12

What does the K-index measure?

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

14. - G3B10

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

SelectAnswer
A180 miles
B2,500 miles
C1,200 miles
D12,000 miles

15. - G3C07

What makes HF scatter signals often sound distorted?

SelectAnswer
AGround waves are absorbing much of the signal
BEnergy is scattered into the skip zone through several different paths
CThe E region is not present
DThe ionospheric region involved is unstable

16. - G4A03

How does a noise blanker work?

SelectAnswer
ABy temporarily increasing received bandwidth
BBy clipping noise peaks
CBy reducing receiver gain during a noise pulse
DBy redirecting noise pulses into a filter capacitor

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

SelectAnswer
AFaster response
BBetter for measuring computer circuits
CHigher precision
DLess prone to overload

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

SelectAnswer
AIt ensures that hazardous voltages cannot appear on the chassis
BIt prevents signal overload
CIt ensures that the neutral wire is grounded
DIt prevents a blown fuse in the event of an internal short circuit

19. - G4D02

How does a speech processor affect a single sideband phone signal?

SelectAnswer
AIt reduces harmonic distortion
BIt increases average power
CIt reduces intermodulation distortion
DIt increases peak power

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

SelectAnswer
AThe control computers
BThe fuel delivery system
CAll these choices are correct
DThe battery charging system

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

SelectAnswer
AResonance causes impedance to be very low
BResonance causes impedance to be very high
CImpedance is equal to the arithmetic mean of the inductance and capacitance
DImpedance is equal to the geometric mean of the inductance and capacitance

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

SelectAnswer
AApproximately 11 watts
BApproximately 61 milliwatts
CApproximately 61 watts
DApproximately 11 milliwatts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

SelectAnswer
A576.9 nanofarads
B3,583 picofarads
C1,733 picofarads
D10.750 nanofarads

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

SelectAnswer
AHigh capacitance for given volume
BComparatively low cost
CHigh stability
DTight tolerance

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

SelectAnswer
ABy creating an out-of-phase current to cancel the common-mode current
BBy creating an impedance in the current’s path
CFerrites expel magnetic fields
DIt converts common-mode current to differential mode current

26. - G7A09

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

SelectAnswer
ASymbol 2
BSymbol 1
CSymbol 5
DSymbol 4

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

SelectAnswer
A50%
BMore than 50% but less than 100%
C100%
DLess than 50%

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

SelectAnswer
ATo present the desired impedance to the transmitter and feed line
BTo reduce power supply ripple
CTo minimize radiation resistance
DTo minimize transmitter power output

29. - G8A13

What is a link budget?

SelectAnswer
AThe financial costs associated with operating a radio link
BThe sum of antenna gains minus system losses
CThe difference between transmit power and receiver sensitivity
DThe sum of transmit power and antenna gains minus system losses as seen at the receiver

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

SelectAnswer
A3 kHz
B16 kHz
C8 kHz
D5 kHz

31. - G8C09

Which is true of mesh network microwave nodes?

SelectAnswer
AMore nodes reduce overall microwave out of band interference
BIf one node fails, a packet may still reach its target station via an alternate node
CLinks between two nodes in a network may have different frequencies and bandwidths
DHaving more nodes increases signal strengths

32. - G9A09

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

SelectAnswer
A1:2
B4:1
C1:4
D2:1

33. - G9B03

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

SelectAnswer
AIsotropic
BOmnidirectional in azimuth
CHemispherical
DBi-directional in azimuth

34. - G9C09

In free space, 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 9 dB higher
CApproximately 6 dB higher
DApproximately 1.5 dB higher

35. - G9D02

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

SelectAnswer
AApproximately 300 ohms
BVery low
CVery high
DApproximately 50 ohms

Figure G7-1