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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Locate the antenna close to your operating position to minimize feed-line radiation
B	Make sure the antenna is properly shielded
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Make sure that MPE limits are not exceeded in occupied areas

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	On the antenna, opposite the feed point
B	Where the feed lines enter the building
C	In series with each ground lead
D	At the closest power pole ground electrode

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	12 meters
C	160 meters
D	30 meters

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The ITU
B	The FCC
C	The control operator
D	The IEEE

5. - G1C05

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

Select	Answer
A	2000 watts PEP output
B	1000 watts PEP output
C	1500 watts PEP output
D	100 watts PEP output

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	A special identifier is not required if their General class license application has been filed with the FCC
B	Whenever they operate using Technician frequency privileges
C	Whenever they operate on any amateur frequency
D	Whenever they operate using General class frequency privileges

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	All these choices are correct
C	When using a band where the Amateur Service is secondary
D	When operating within one mile of an FCC Monitoring Station

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	Transmit audio or microphone gain
C	Attenuator level
D	RF clipping level

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

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	The fastest speed at which you are comfortable copying, but no faster than the CQ
C	At the standard calling speed of 10 wpm
D	The fastest speed at which you are comfortable copying, but no slower than the CQ

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	To help with a reply if the FCC requests information about your station
B	The FCC requires a log of all international third-party traffic
C	The log provides evidence of operation needed to renew a license without retest
D	The FCC requires a log of all international contacts

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	A special hardware modem
B	Receiver attenuator set to -12 dB
C	Computer time accurate to within approximately 1 second
D	A vertically polarized antenna

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	A zero sunspot number indicates that radio propagation is not possible on any band
C	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
D	Lower sunspot numbers generally indicate greater probability of sporadic E propagation

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency during a 24-hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency during a 24-hour period

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By clipping noise peaks
B	By redirecting noise pulses into a filter capacitor
C	By temporarily increasing received bandwidth
D	By reducing receiver gain during a noise pulse

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When measuring the frequency of an oscillator
B	When high precision is desired
C	When adjusting circuits for maximum or minimum values
D	When testing logic circuits

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	You receive reports of harmonic interference from your station
B	The SWR reading for one or more antennas is suddenly very high
C	An item of station equipment starts to draw excessive amounts of current
D	You receive reports of “hum” on your station’s transmitted signal

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Increase transmitter bass response for more natural-sounding SSB signals
B	Decrease high-frequency voice output to prevent out-of-band operation
C	Prevent distortion of voice signals
D	Increase the apparent loudness of transmitted voice signals

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket’s wiring may be inadequate for the current drawn by the transceiver
B	The socket is not wired with an RF-shielded power cable
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	The circuit radiates all its energy in the form of radio waves
B	Current and voltage are equal
C	Inductive reactance and capacitive reactance cancel
D	Resistance is cancelled

22. - G5B10

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

Select	Answer
A	20.6 percent
B	25.9 percent
C	12.2 percent
D	10.9 percent

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	1,000 millihenries
B	14.3 millihenries
C	70 millihenries
D	7 millihenries

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Saturation and cutoff
B	Peak and valley current points
C	The active region (between cutoff and saturation)
D	Enhancement and depletion modes

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Metal Monolayer Integrated Circuit
C	Multi-Mode Integrated Circuit
D	Mode Modulated Integrated Circuit

26. - G7A09

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

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

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	A Class C high efficiency amplifier
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

28. - G7C05

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

Select	Answer
A	Relatively high-power output
B	Extremely narrow tuning range
C	Variable output frequency with the stability of a crystal oscillator
D	Pure sine wave output

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Frequency modulation
B	Phase modulation
C	Vestigial sideband
D	Single sideband

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. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal is 3 times the noise level of an equivalent SSB signal
B	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
C	The signal is S3 (weak signals)
D	The signal is 3 dB over S9

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:2
B	5:1
C	1:5
D	2:1

33. - G9B03

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

Select	Answer
A	Hemispherical
B	Bi-directional in azimuth
C	Omnidirectional in azimuth
D	Isotropic

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 3 dB higher
B	Approximately 9 dB higher
C	Approximately 6 dB higher
D	Approximately 1.5 dB higher

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Broadside to the loop
B	Electrically small loops are omnidirectional
C	In the plane of the loop
D	Broadside and in the plane of the loop

Figure G7-1