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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
AAll commercial stations; amateur radio stations are exempt
BAll stations with a time-averaged transmission of more than one milliwatt
COnly stations transmitting more than 500 watts PEP
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 to all buried water and gas lines
BThey must be bonded together with all other grounds
CLightning grounds must be connected to all ungrounded wiring
DBends in ground wires must be made as close as possible to a right angle

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

SelectAnswer
AThe lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
BThe upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
CThe upper frequency portion
DThe lower frequency portion

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
BUnidentified transmissions of less than 10 seconds duration for test purposes only
CAutomatic retransmission of other amateur signals by any amateur station
DEncrypted messages, if not intended to facilitate a criminal act

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

SelectAnswer
A1000 watts PEP output
B2000 watts PEP output
C1500 watts PEP output
D100 watts PEP output

6. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

SelectAnswer
AThe person must hold an FCC granted amateur radio license of General class or above
BNone of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
CThe person must be a resident of the US for a minimum of 5 years
DThe person’s home citizenship must be in ITU region 2

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

SelectAnswer
A100 watts
B100 milliwatts
C1500 watts
D10 watts

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

SelectAnswer
AAny caller is welcome to respond
BAny stations outside the lower 48 states
COnly contest stations
DOnly stations in Germany

9. - G2B10

Which of the following is good amateur practice for net management?

SelectAnswer
ATransmit the full net roster at the beginning of every session
BHave a backup frequency in case of interference or poor conditions
CAll these choices are correct
DAlways use multiple sets of phonetics during check-in

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

SelectAnswer
AOperating full break-in
BClosing station now
CListening only for a specific station or stations
DNo US stations should call

11. - G2D09

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

SelectAnswer
AAll these choices are correct
BSend a QSL card to the stations worked, or QSL via Logbook of The World
CIdentify your station according to normal FCC regulations
DSubmit a log to the contest sponsor

12. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

SelectAnswer
AJoining an existing contact is not possible, PACTOR connections are limited to two stations
BSend a NAK code
CSend broadcast packets containing your call sign while in MONITOR mode
DTransmit a steady carrier until the PACTOR protocol times out and disconnects

13. - G3A09

How can high geomagnetic activity benefit radio communications?

SelectAnswer
AImprove HF long path propagation
BCreates auroras that can reflect VHF signals
CIncreases signal strength for HF signals passing through the polar regions
DReduce long delayed echoes

14. - G3B06

What usually happens to radio waves with frequencies below the LUF?

SelectAnswer
AThey are refracted and trapped in the ionosphere to circle Earth
BThey pass through the ionosphere
CThey are refracted back to Earth
DThey are attenuated before reaching the destination

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A03

How does a noise blanker work?

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

17. - G4B07

What signals are used to conduct a two-tone test?

SelectAnswer
ATwo swept frequency tones
BTwo audio signals of the same frequency shifted 90 degrees
CTwo audio frequency range square wave signals of equal amplitude
DTwo non-harmonically related audio signals

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

SelectAnswer
AOn-and-off humming or clicking
BA chirpy CW signal
CSeverely distorted audio
DA CW signal at a nearly pure audio frequency

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

20. - G4E01

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

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

21. - G5A06

How does a capacitor react to AC?

SelectAnswer
AAs the amplitude of the applied AC increases, the reactance increases
BAs the amplitude of the applied AC increases, the reactance decreases
CAs the frequency of the applied AC increases, the reactance decreases
DAs the frequency of the applied AC increases, the reactance increases

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

SelectAnswer
A20.6 percent
B25.9 percent
C10.9 percent
D12.2 percent

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 divided by 4
BThe input voltage is multiplied by 4
CAdditional resistance must be added in parallel with the secondary to prevent overload
DAdditional resistance must be added in series with the primary to prevent overload

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

SelectAnswer
AIts reactance increases
BIt becomes capacitive
CCatastrophic failure is likely
DHarmonics are generated

25. - G6B04

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

SelectAnswer
A40 GHz
B50 MHz
C500 MHz
D4 GHz

26. - G7A01

What is the function of a power supply bleeder resistor?

SelectAnswer
AIt acts as a fuse for excess voltage
BIt removes shock hazards from the induction coils
CIt eliminates ground loop current
DIt discharges the filter capacitors when power is removed

27. - G7B06

What is a shift register?

SelectAnswer
AA clocked array of circuits that passes data in steps along the array
BAn array of operational amplifiers used for tri-state arithmetic operations
CA digital mixer
DAn analog mixer

28. - G7C14

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

SelectAnswer
APole and zero
BCutoff and rolloff
CUpper and lower half-power
DImage and harmonic

29. - G8A12

What is QPSK modulation?

SelectAnswer
AModulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits
BModulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
CModulation using quasi-parallel to serial conversion to reduce bandwidth
DModulation using quadra-pole sideband keying to generate spread spectrum signals

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

SelectAnswer
ATo aid in tuning your transmitter
BTo prevent overmodulation
CTo allow time for the other station to break in during a transmission
DSome modes have high duty cycles that could exceed the transmitter’s average power rating

31. - G8C08

Which of the following statements is true about PSK31?

SelectAnswer
AUpper case letters use longer Varicode bit sequences and thus slow down transmission
BUpper case letters are sent with more power
CHigher power is needed as compared to RTTY for similar error rates
DError correction is used to ensure accurate message reception

32. - G9A06

In what units is RF feed line loss usually expressed?

SelectAnswer
ADecibels per 100 feet
BOhms per 1,000 feet
COhms per 100 feet
DDecibels per 1,000 feet

33. - G9B03

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

SelectAnswer
AHemispherical
BOmnidirectional in azimuth
CIsotropic
DBi-directional in azimuth

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

SelectAnswer
AGain increases
BResonant frequency is lower
CFront-to-back ratio decreases
DBeamwidth increases

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

SelectAnswer
ABroadside to the plane of the halo
BOmnidirectional in the plane of the halo
COn the same side as the feed point
DOpposite the feed point