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

2. - G0B07

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

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

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	80 meters, 20 meters, 15 meters, and 10 meters
B	60 meters, 30 meters, 17 meters, and 12 meters
C	80 meters, 40 meters, 20 meters, and 15 meters
D	160 meters, 60 meters, 15 meters, and 12 meters

4. - G1B06

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

Select	Answer
A	Under no circumstances, FCC rules take priority
B	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
C	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
D	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure

5. - G1C07

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

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

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Those of the remote station’s country and the FCC’s third-party regulations
B	Only those of the FCC
C	Those of both the remote station’s country and the FCC
D	Only those of the remote station’s country

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	No third-party traffic may be transmitted
B	The station initiating the contact must be under local or remote control
C	The control operator of the interrogating station must hold an Amateur Extra class license
D	The interrogating transmission must be made by another automatically controlled station

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	The received signal is more natural sounding
B	It occupies less bandwidth
C	It allows “hands free” operation
D	It provides more power output

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	3 kHz to 6 kHz
B	5 Hz to 50 Hz
C	1 kHz to 3 kHz
D	150 Hz to 500 Hz

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

11. - G2D05

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

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

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 real time propagation data by monitoring amateur radio transmissions worldwide
D	To provide high-speed data services during an emergency or community event

13. - G3A05

What is the solar flux index?

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

14. - G3B02

What factors affect the MUF?

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

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different paths
B	The ionospheric region involved is unstable
C	The E region is not present
D	Ground waves are absorbing much of the signal

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the SWR in the feed line to the antenna
B	Increase power transfer from the transmitter to the feed line
C	All these choices are correct
D	Reduce the power dissipation in the feedline to the antenna

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

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

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	Insulated wire has been used for the ground wire
C	The ground wire has high impedance on that frequency
D	The ground rod is resonant

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It increases average power
B	It increases peak power
C	It reduces intermodulation distortion
D	It reduces harmonic distortion

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent discharge of the battery through the panel during times of low or no illumination
B	To prevent overload by regulating the charging voltage
C	To prevent damage to the battery due to excessive voltage at high illumination levels
D	To limit the current flowing from the panel to a safe value

21. - G5A06

How does a capacitor react to AC?

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

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	1500 watts
B	530 watts
C	2120 watts
D	1060 watts

23. - G5C09

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

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

24. - G6A09

Which of the following describes MOSFET construction?

Select	Answer
A	The source is separated from the drain by a thin insulating layer
B	The gate is formed by a back-biased junction
C	The gate is separated from the channel by a thin insulating layer
D	The source is formed by depositing metal on silicon

25. - G6B08

How is an LED biased when emitting light?

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

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	Capacitors and inductors
C	All these choices are correct
D	Transformers and transducers

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	3
B	8
C	6
D	16

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	45 degrees
B	90 degrees
C	Zero
D	180 degrees

29. - G8A06

Which of the following is characteristic of QPSK31?

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

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

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

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Varicode
B	Viterbi
C	Binary
D	Volumetric

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1,000 feet
B	Ohms per 100 feet
C	Decibels per 100 feet
D	Decibels per 1,000 feet

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	11 feet
C	21 feet
D	16 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 number of elements on the boom
B	The spacing of each element along the boom
C	The physical length of the boom
D	All these choices are correct

35. - G9D03

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

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