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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	All these choices are correct
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	Take action to prevent human exposure to the excessive RF fields
D	Secure written permission from your neighbors to operate above the controlled MPE limits

2. - G0B13

Where should lightning arrestors be located?

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

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	11 meters
C	12 meters
D	60 meters

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	100 watts PEP output
C	200 watts PEP output
D	10 watts PEP output

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

6. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person’s home citizenship must be in ITU region 2
B	The person must be a resident of the US for a minimum of 5 years
C	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
D	The person must hold an FCC granted amateur radio license of General class or above

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

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Very high-fidelity voice modulation
B	Less bandwidth used and greater power efficiency
C	Less subject to interference from atmospheric static crashes
D	Ease of tuning on receive and immunity to impulse noise

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Only a person holding an FCC-issued amateur operator license
B	Any control operator when normal communication systems are operational
C	Only a RACES net control operator
D	A person holding an FCC-issued amateur operator license or an appropriate government official

10. - G2C04

What does the Q signal “QRL?” mean?

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

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Able, Baker, Charlie, Dog
B	Alpha, Bravo, Charlie, Delta
C	America, Boston, Canada, Denmark
D	Adam, Boy, Charles, David

12. - G2E02

What is VARA?

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

13. - G3A13

What does the A-index measure?

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

14. - G3B02

What factors affect the MUF?

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

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A12

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

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

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. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Bond equipment enclosures together
C	Connect the AC neutral conductor to the ground wire
D	Connect all ground conductors in series

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Prevent distortion of voice signals
B	Increase the apparent loudness of transmitted voice signals
C	Decrease high-frequency voice output to prevent out-of-band operation
D	Increase transmitter bass response for more natural-sounding SSB signals

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

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All these choices are correct
B	A transformer
C	A length of transmission line
D	A Pi-network

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	1.414
C	0.707
D	1.00

23. - G5C05

Why is the primary winding wire of a voltage step-up transformer usually a larger size than that of the secondary winding?

Select	Answer
A	To ensure that the volume of the primary winding is equal to the volume of the secondary winding
B	To accommodate the higher current of the primary
C	To improve the coupling between the primary and secondary
D	To prevent parasitic oscillations due to resistive losses in the primary

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

Select	Answer
A	The resistor could overheat
B	The resistor’s tolerance value would not be adequate
C	The resistor’s inductance could make circuit performance unpredictable
D	The resistor’s internal capacitance would detune the circuit

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A moisture-resistant RF connector useful to 10 GHz
B	A low noise figure VHF connector
C	A small bayonet connector used for data circuits
D	A nickel plated version of the PL-259

26. - G7A12

Which symbol in Figure G7-1 represents a solid core transformer?

Select	Answer
A	Symbol 6
B	Symbol 1
C	Symbol 4
D	Symbol 7

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

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

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in transmitter to perform frequency multiplication
B	Used in a single sideband receiver to extract the modulated signal
C	Used in test gear to detect spurious mixing products
D	Used in an FM receiver to filter out unwanted sidebands

29. - G8A05

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

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

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Multiplier
B	Reactance modulator
C	Mixer
D	Balanced converter

31. - G8C10

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

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

32. - G9A02

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

Select	Answer
A	High SWR reduces the relative effect of 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 makes it difficult to measure transmission line loss

33. - G9B06

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

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

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

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Very low
B	Approximately 50 ohms
C	Very high
D	Approximately 300 ohms

Figure G7-1