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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	All commercial stations; amateur radio stations are exempt
B	All stations with a time-averaged transmission of more than one milliwatt
C	Only stations transmitting more than 500 watts PEP
D	Only stations with antennas lower than one wavelength above the ground

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	All these choices are correct
B	Notify the electric company that a person will be working on the tower
C	Unground the base of the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged

3. - G1A02

On which of the following bands is phone operation prohibited?

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

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	All these choices are correct
B	Transmission of bulletins of general interest to amateur radio licensees
C	Automatic identification of repeaters
D	Observation of propagation and reception

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	Type-certify equipment to FCC standards
D	Obtain an experimental license from the FCC

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	A Volunteer Examiner Coordinator
C	The Universal Licensing System
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	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
C	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
D	They must be for other licensed amateurs

8. - G2A09

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

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

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

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Sending without error
B	Operating split to avoid interference on frequency
C	Matching the speed of the transmitting station
D	Matching the transmit frequency to the frequency of a received signal

11. - G2D06

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

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

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	RJ-45
B	Printer/Server
C	Gateway
D	Terminal Node Controller

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Long term oscillations in the upper atmosphere
B	The position of the Moon in its orbit
C	Rotation of the Sun’s surface layers around its axis
D	Cyclic variation in Earth’s radiation belts

14. - G3B04

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

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

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The E region
B	The F1 region
C	The D region
D	The F2 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. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Greater precision
B	Complex waveforms can be measured
C	Complex impedances can be easily measured
D	An oscilloscope uses less power

18. - G4C04

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

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

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 100 times more powerful
C	It is 10 times less powerful
D	It is 20 times less powerful

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

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Reluctance
B	Admittance
C	Susceptance
D	Conductance

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

Select	Answer
A	Approximately 6 dB
B	Approximately 3 dB
C	Approximately 9 dB
D	Approximately 2 dB

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	1,000 millihenries
B	7 millihenries
C	14.3 millihenries
D	70 millihenries

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	The active region (between cutoff and saturation)
B	Saturation and cutoff
C	Peak and valley current points
D	Enhancement and depletion modes

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. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 7
C	Symbol 6
D	Symbol 11

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	A Class C high efficiency amplifier
D	An amplifier used as a frequency multiplier

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	Filter
B	Carrier oscillator
C	IF amplifier
D	RF amplifier

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The carrier frequency that contains the signal
B	Spurious signals that envelop nearby frequencies
C	The bandwidth of the modulated signal
D	The waveform created by connecting the peak values of the modulated signal

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Mixer interference
B	Image response
C	Intermediate interference
D	Quadrature response

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	2.4 GHz
B	432 MHz
C	10.7 GHz
D	902 MHz

32. - G9A03

What is the nominal characteristic impedance of “window line” transmission line?

Select	Answer
A	450 ohms
B	50 ohms
C	100 ohms
D	75 ohms

33. - G9B12

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

Select	Answer
A	21 feet
B	16 feet
C	8 feet
D	11 feet

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Gain increases
B	Front-to-back ratio decreases
C	Beamwidth increases
D	Resonant frequency is lower

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
B	A vertical dipole placed at approximately 1/2 wavelength above the ground
C	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
D	A horizontal dipole placed at approximately 1/2 wavelength above the ground

Figure G7-1