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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	By calculation based on FCC OET Bulletin 65
C	By calculation based on computer modeling
D	All these choices are correct

2. - G0B13

Where should lightning arrestors be located?

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

3. - G1A02

On which of the following bands is phone operation prohibited?

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

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
B	Under no circumstances, FCC rules take priority
C	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
D	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Type-certify equipment to FCC standards
B	Obtain an experimental license from the FCC
C	Publicly document the technical characteristics of the protocol
D	Submit a rule-making proposal to the FCC describing the codes and methods of the technique

6. - G1D01

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

Select	Answer
A	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
B	Any 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
C	Any 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
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 4
B	Region 3
C	Region 1
D	Region 2

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Lower sideband is more efficient than upper sideband at these frequencies
B	Because it is fully compatible with an AM detector
C	Lower sideband is the only sideband legal on these frequency bands
D	It is commonly accepted amateur practice

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
B	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
C	Listen for 2 minutes before calling CQ
D	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Increase your power
B	Repeat everything twice
C	Send slower
D	Change frequency

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
B	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
C	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
D	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Transmit a connect message on the station’s published frequency
C	Send an email to the system control operator
D	Send QRL in Morse code

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	It disrupts communications via satellite more than direct communications
B	It disrupts signals on lower frequencies more than those on higher frequencies
C	None, because only areas on the night side of the Earth are affected
D	It enhances propagation on all HF frequencies

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	All these choices are correct
B	Use a network of automated receiving stations on the internet to see where your transmissions are being received
C	Send a series of dots and listen for echoes
D	Check the A-index

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To allow transmitting on two frequencies at once
B	To permit full duplex operation -- that is, transmitting and receiving at the same time
C	To transmit on one frequency and listen on another
D	To improve frequency accuracy by allowing variable frequency output (VFO) operation

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Desensitization which can cause intermodulation products which interfere with impedance readings
B	Received power that interferes with SWR readings
C	Generation of harmonics which interfere with frequency readings
D	All these choices are correct

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	A steady hum whenever the transmitter is on the air
B	On-and-off humming or clicking
C	Distorted speech
D	Clearly audible speech

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	All these choices are correct
B	Excess intermodulation products
C	Distorted speech
D	Excessive background noise

20. - G4E09

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

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

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reluctance
B	Admittance
C	Conductance
D	Reactance

22. - G5B05

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

Select	Answer
A	Approximately 11 watts
B	Approximately 61 watts
C	Approximately 11 milliwatts
D	Approximately 61 milliwatts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

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

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Long life
B	Rapid recharge
C	High voltage
D	High discharge current

25. - G6B04

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

Select	Answer
A	4 GHz
B	40 GHz
C	50 MHz
D	500 MHz

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	Only one diode is required
B	More current can be drawn from the half-wave rectifier
C	The ripple frequency is twice that of a full-wave rectifier
D	The output voltage is two times the peak input voltage

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

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

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Filtering
B	All these choices are correct
C	Detection
D	Modulation

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase inversion
B	Phase convolution
C	Phase transformation
D	Phase modulation

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	5F1-3F2
B	All these choices are correct
C	2F1-F2
D	3F1-F2

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Directory
B	Preamble
C	Trailer
D	Header

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation is independent of frequency
B	Attenuation increases
C	Attenuation follows Marconi’s Law of Attenuation
D	Attenuation decreases

33. - G9B07

How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?

Select	Answer
A	It peaks at about 1/8 wavelength above ground
B	It steadily increases
C	It is unaffected by the height above ground
D	It steadily decreases

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	They are all the same length
B	The reflector is longer, and the director is shorter
C	The reflector is shorter, and the director is longer
D	Relative length depends on the frequency of operation

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