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. - G0A10

What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction when they are present
B	Use an antenna with a higher front-to-back ratio
C	Change to a non-polarized antenna with higher gain
D	All these choices are correct

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	All these choices are correct
B	Always hold on to the tower with one hand
C	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life
D	Ensure that all heavy tools are securely fastened to the harness

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.025 MHz to 28.300 MHz only
B	28.000 MHz to 28.300 MHz only
C	28.000 MHz to 28.025 MHz only
D	The entire band

4. - G1B04

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

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

5. - G1C04

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

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

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	A Volunteer Examiner Coordinator
B	The Universal Licensing System
C	The Wireless Telecommunications Bureau
D	The Federal Communications Commission

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must relate to emergencies or disaster relief
B	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
C	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
D	They must be for other licensed amateurs

8. - G2A05

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

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

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Identify your station by transmitting your call sign at least 3 times
B	All these choices are correct
C	Follow the voluntary band plan
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C05

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

Select	Answer
A	The fastest speed at which you are comfortable copying, but no faster than the CQ
B	At the standard calling speed of 5 wpm
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. - G2D06

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

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

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide DX spotting reports to aid contesters and DXers
B	To provide FM repeater coverage in remote areas
C	To provide high-speed data services during an emergency or community event
D	To provide real time propagation data by monitoring amateur radio transmissions worldwide

13. - G3A05

What is the solar flux index?

Select	Answer
A	A count of sunspots that is adjusted for solar emissions
B	A measure of solar radiation with a wavelength of 10.7 centimeters
C	Another name for the American sunspot number
D	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Solar radiation and ionospheric disturbances
B	Time of day and season
C	All these choices are correct
D	Path distance and location

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. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	It may be possible to reduce or eliminate interference from other signals
C	Accidental out-of-band operation can be prevented
D	Interference from impulse noise will be eliminated

17. - G4B07

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

Select	Answer
A	Two audio frequency range square wave signals of equal amplitude
B	Two audio signals of the same frequency shifted 90 degrees
C	Two swept frequency tones
D	Two non-harmonically related audio signals

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	The ground rod is resonant
C	The ground wire has high impedance on that frequency
D	Insulated wire has been used for the ground wire

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?

Select	Answer
A	At least 1 kHz below the edge of the segment
B	At least 3 kHz above the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 3 kHz below the edge of the segment

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	A series resistor must be in place
B	Ground the solar panel outer metal framework
C	Ensure the battery is placed terminals-up
D	The solar panel must have a charge controller

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Impedance is equal to the arithmetic mean of the inductance and capacitance
B	Impedance is equal to the geometric mean of the inductance and capacitance
C	Resonance causes impedance to be very high
D	Resonance causes impedance to be very low

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It is the sum of the reciprocal of each individual voltage drop
B	It equals the average of the branch currents
C	It decreases as more parallel branches are added to the circuit
D	It equals the sum of the currents through each branch

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?

Select	Answer
A	Additional resistance must be added in parallel with the secondary to prevent overload
B	The input voltage is multiplied by 4
C	Additional resistance must be added in series with the primary to prevent overload
D	The input voltage is divided by 4

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase efficiency
B	To decrease plate resistance
C	To increase the control grid resistance
D	To reduce grid-to-plate capacitance

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	Type N
B	PL-259
C	RCA Phono
D	BNC

26. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	270 degrees
B	90 degrees
C	360 degrees
D	180 degrees

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	An amplifier and a divider
B	A filter and an amplifier operating in a feedback loop
C	A circulator and a filter operating in a feed-forward loop
D	A frequency multiplier and a mixer

28. - G7C14

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

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

29. - G8A06

Which of the following is characteristic of QPSK31?

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

30. - G8B13

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

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

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is vertical, time is intensity
B	Frequency is vertical, signal strength is intensity, time is horizontal
C	Frequency is horizontal, signal strength is intensity, time is vertical
D	Frequency is vertical, signal strength is horizontal, time is intensity

32. - G9A04

What causes reflected power at an antenna’s feed point?

Select	Answer
A	Operating an antenna at its resonant frequency
B	Feeding the antenna with unbalanced feed line
C	A difference between feed line impedance and antenna feed point impedance
D	Using more transmitter power than the antenna can handle

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface or buried a few inches below the ground
B	At the center of the antenna
C	As high as possible above the ground
D	Parallel to the antenna element

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The spacing of each element along the boom
B	The number of elements on the boom
C	The physical length of the boom
D	All these choices are correct

35. - G9D07

Which of the following describes a log-periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	SWR varies periodically as a function of boom length
C	Element length and spacing vary logarithmically along the boom
D	Impedance varies periodically as a function of frequency