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

2. - G0B07

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

Select	Answer
A	Ensure that all heavy tools are securely fastened to the harness
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	All these choices are correct

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations may use the band only during emergencies
B	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
C	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	250 feet
B	200 feet
C	50 feet
D	100 feet

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	200 watts PEP output
B	1500 watts PEP output
C	1000 watts PEP output
D	1200 watts PEP output

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	Contact the FCC to have the license reinstated
B	There are no requirements other than being able to show a copy of the expired license
C	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
D	They must have a letter from the FCC showing they once held an amateur or commercial license

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Under no circumstances
B	Only if the 10-meter repeater control operator holds at least a General class license
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only during an FCC-declared general state of communications emergency

8. - G2A02

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

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

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Have a backup frequency in case of interference or poor conditions
B	Transmit the full net roster at the beginning of every session
C	Always use multiple sets of phonetics during check-in
D	All these choices are correct

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	Operating full break-in
B	No US stations should call
C	Listening only for a specific station or stations
D	Closing station now

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 signal strengths between the input and output of the repeater
D	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors

12. - G2E11

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

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

13. - G3A12

What does the K-index measure?

Select	Answer
A	The solar radio flux at Boulder, Colorado
B	The short-term stability of the Sun’s magnetic field
C	The short-term stability of Earth’s geomagnetic field
D	The relative position of sunspots on the surface of the Sun

14. - G3B04

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

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagation is via ducts in the F region, which absorb most of the energy
B	Only a small part of the signal energy is scattered into the skip zone
C	Signals are scattered from the magnetosphere, which is not a good reflector
D	Propagation is via ground waves, which absorb most of the signal energy

16. - G4A08

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

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

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

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

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	Severely distorted audio
B	A chirpy CW signal
C	A CW signal at a nearly pure audio frequency
D	On-and-off humming or clicking

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

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

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Shunt
C	Bypass
D	Series-parallel

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance decreases

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 equals the sum of the currents through each branch
D	It decreases as more parallel branches are added to the circuit

23. - G5C14

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

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

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	High capacitance for a given volume
C	Tight tolerance
D	Inexpensive RF capacitor

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	The magnetic properties of the core may be optimized for a specific range of frequencies
C	All these choices are correct
D	Large values of inductance may be obtained

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	180 degrees
D	360 degrees

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high only when both inputs are high
C	Output is low when either or both inputs are high
D	Output is high when either or both inputs are low

28. - G7C10

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

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

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency modulation
B	Power modulation
C	Phase modulation
D	Amplitude modulation

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Second harmonics
B	Even-order
C	Odd-order
D	Intercept point

31. - G8C05

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

Select	Answer
A	Request retransmission of the packet
B	Receiving station connected and ready for transmissions
C	Entire file received correctly
D	Packet was received without error

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	Higher loss increases the accuracy of SWR measured at the input to the line
C	Higher loss reduces SWR measured at the input to the line
D	Higher loss increases SWR measured at the input to the line

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	263 feet
B	42 feet
C	132 feet
D	84 feet

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	All these choices are correct
C	The physical length of the boom
D	The number of elements on the boom

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By varying the base loading inductance
B	By deploying a capacitance hat
C	By varying its body capacitance
D	By extending and retracting the whip