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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	An SWR meter with a peak-reading function
B	A receiver with digital signal processing (DSP) noise reduction
C	An oscilloscope with a high-stability crystal marker generator
D	A calibrated field strength meter with a calibrated antenna

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Outside the building
B	As close to the station equipment as possible
C	Parallel to the water supply line
D	Next to the closest power pole

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	12 meters
C	60 meters
D	11 meters

4. - G1B04

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

Select	Answer
A	Encrypted messages, if not intended to facilitate a criminal act
B	Occasional retransmission of weather and propagation forecast information from US government stations
C	Unidentified transmissions of less than 10 seconds duration for test purposes only
D	Automatic retransmission of other amateur signals by any amateur station

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the manufacturer of your equipment and the antenna used
B	You must keep a record of all third-party traffic
C	You must keep a record of the date, time, frequency, power level, and stations worked
D	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only on the Technician band segments until you have a receipt for the FCC application fee payment
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	On any General or Technician class band segment except 30 meters and 60 meters

7. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	When under automatic control
C	When messages are not encrypted
D	Under no circumstances

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Frequency modulation
B	Double sideband
C	Single phase modulation
D	Single sideband

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Except during emergencies, no amateur station has priority access to any frequency
B	Contest operations should yield to non-contest use of frequencies
C	QSOs in progress have priority
D	Nets have priority

10. - G2C04

What does the Q signal “QRL?” mean?

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

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare vertical and horizontal signal strengths on the input frequency
B	All these choices are correct
C	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
D	Compare signal strengths between the input and output of the repeater

12. - G2E02

What is VARA?

Select	Answer
A	A low signal-to-noise digital mode used for EME (moonbounce)
B	A DX spotting system using a network of software defined radios
C	A digital protocol used with Winlink
D	A radio direction finding system used on VHF and UHF

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Improve HF long path propagation
B	Creates auroras that can reflect VHF signals
C	Reduce long delayed echoes
D	Increases signal strength for HF signals passing through the polar regions

14. - G3B08

What does MUF stand for?

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

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation at high elevation angles
C	Propagation near the MUF
D	Long path HF propagation at sunrise and sunset

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	Received frequency may shift several kHz
B	CW signals may become severely attenuated
C	Received signals may become distorted
D	Received frequency may become unstable

17. - G4B05

Why do voltmeters have high input impedance?

Select	Answer
A	It improves the frequency response
B	It decreases the loading on circuits being measured
C	It allows for higher voltages to be safely measured
D	It improves the resolution of the readings

18. - G4C01

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

Select	Answer
A	Bypass capacitor
B	Bypass inductor
C	Forward-biased diode
D	Reverse-biased diode

19. - G4D09

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

Select	Answer
A	14.347 MHz to 14.350 MHz
B	14.347 MHz to 14.647 MHz
C	14.344 MHz to 14.347 MHz
D	14.3455 MHz to 14.3485 MHz

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.02 VDC
C	0.2 VDC
D	0.5 VDC

21. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of alternating current caused by capacitance or inductance
B	Reinforcement of the flow of alternating current caused by capacitance or inductance
C	Reinforcement of the flow of direct current caused by resistance
D	Opposition to the flow of direct current caused by resistance

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	6 watts
B	60 watts
C	24 watts
D	2.4 watts

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	3.0 microfarads
B	33.3 microfarads
C	0.33 microfarads
D	300 microfarads

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.1 volt
B	0.7 volts
C	0.3 volts
D	1.0 volts

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	In the tunnel-effect region
B	Reverse biased
C	At the Zener voltage
D	Forward biased

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 2
B	Symbol 11
C	Symbol 7
D	Symbol 1

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class C
B	Class AB
C	Class B
D	Class A

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	The need for high resolution analog-to-digital converters is eliminated
B	All types of modulation can be created with appropriate processing
C	Minimum detectible signal level is reduced
D	Automatic conversion of the signal from digital to analog

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	101.75 Hz
C	5 kHz
D	416.7 Hz

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By using a parity bit with each character
B	By controlling transmitter output power for optimum signal strength
C	By transmitting redundant information with the data
D	By using the Varicode character set

32. - G9A02

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

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

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

Select	Answer
A	It must be longer than 1 wavelength
B	Station equipment may carry significant RF current
C	It produces only vertically polarized radiation
D	It is more effective on the lower HF bands than on the higher bands

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

35. - G9D03

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

Select	Answer
A	Broadside to the plane of the halo
B	Omnidirectional in the plane of the halo
C	Opposite the feed point
D	On the same side as the feed point

Figure G7-1