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

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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?

Select	Answer
A	All stations with a time-averaged transmission of more than one milliwatt
B	All commercial stations; amateur radio stations are exempt
C	Only stations with antennas lower than one wavelength above the ground
D	Only stations transmitting more than 500 watts PEP

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	All these choices are correct
B	Overvoltage on the hot wires
C	Current flowing from one or more of the hot wires to the neutral wire
D	Current flowing from one or more of the hot wires directly to ground

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	18155 kHz
C	21300 kHz
D	24900 kHz

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Transmissions to assist with learning the International Morse code
B	All these choices are correct
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C10

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

Select	Answer
A	300 baud
B	19.6 kilobaud
C	56 kilobaud
D	1200 baud

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	30 days
C	365 days
D	For as long as your current license is valid

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Anywhere in the band
B	No part
C	Channels 42 through 45
D	Channels 1 through 4

8. - G2A02

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

Select	Answer
A	Suppressed sideband
B	Double sideband
C	Lower sideband
D	Upper sideband

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only SSTV contacts
B	Only contacts with other stations within the 48 contiguous states
C	Only digital contacts
D	Only contacts with stations not within the 48 contiguous states

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Will you keep the frequency clear?”
B	“Are you busy?” or “Is this frequency in use?”
C	“Are you listening only for a specific station?”
D	“Are you operating full break-in?” or “Can you operate full break-in?”

11. - G2D06

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

Select	Answer
A	Along the gray line
B	180 degrees from the station’s short-path heading
C	Toward the north
D	Toward the rising sun

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the CW portion of the band
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the voice portion of the band

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

Select	Answer
A	28 days
B	15 hours to several days
C	4 to 8 minutes
D	14 days

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	Periodic fading approximately every 10 seconds
C	The signal might be cancelled causing severe attenuation
D	A slightly delayed echo might be heard

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The F2 region
B	The D region
C	The E region
D	The F1 region

16. - G4A08

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

Select	Answer
A	Desired power output without exceeding maximum allowable plate current
B	Minimum plate current without exceeding maximum allowable grid current
C	Minimum SWR on the antenna
D	Highest plate voltage while minimizing grid current

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Percentage of carrier phase shift
B	Percentage of suppression of the carrier and undesired sideband for SSB
C	Linearity
D	Percentage of frequency modulation

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Arcing at a poor electrical connection
B	Lack of rectification of the transmitter’s signal in power conductors
C	Not using a balun or line isolator to feed balanced antennas
D	Using a balun to feed an unbalanced antenna

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 MHz to 7.181 MHz
B	7.1765 MHz to 7.1795 MHz
C	7.175 MHz to 7.178 MHz
D	7.178 MHz to 7.184 MHz

20. - G4E07

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

Select	Answer
A	The battery charging system
B	The control computers
C	The fuel delivery system
D	All these choices are correct

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Siemens
B	Farad
C	Ampere
D	Ohm

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

Select	Answer
A	Approximately 6 dB
B	Approximately 2 dB
C	Approximately 9 dB
D	Approximately 3 dB

23. - G5C13

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

Select	Answer
A	A capacitor in series
B	An inductor in series
C	A capacitor in parallel
D	An inductor in parallel

24. - G6A01

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

Select	Answer
A	8.5 volts
B	10.5 volts
C	12 volts
D	6 volts

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	High power handling capability
B	Better suited for RF amplification
C	Low power consumption
D	Better suited for power supply regulation

26. - G7A09

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

Select	Answer
A	Symbol 1
B	Symbol 4
C	Symbol 2
D	Symbol 5

27. - G7B04

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

Select	Answer
A	50%
B	Less than 50%
C	100%
D	More than 50% but less than 100%

28. - G7C14

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

Select	Answer
A	Upper and lower half-power
B	Pole and zero
C	Image and harmonic
D	Cutoff and rolloff

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	Its bandwidth is approximately the same as BPSK31
B	Its encoding provides error correction
C	It is sideband sensitive
D	All these choices are correct

30. - G8B11

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

Select	Answer
A	The average
B	The arithmetic product
C	The ratio
D	The sum and difference

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Volumetric
B	Viterbi
C	Varicode
D	Binary

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	High SWR makes it difficult to measure transmission line loss
C	There is no relationship between transmission line loss and SWR
D	High SWR increases loss in a lossy transmission line

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	11 feet
B	21 feet
C	16 feet
D	8 feet

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?

Select	Answer
A	Approximately 6 dB higher
B	Approximately 9 dB higher
C	Approximately 1.5 dB higher
D	Approximately 3 dB higher

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Harmonic suppression
C	Polarization diversity
D	Wide bandwidth

Figure G7-1