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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	All these choices are correct
B	Post a copy of FCC Part 97.13 in the station
C	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
D	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas

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	All these choices are correct
C	Always hold on to the tower with one hand
D	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	All these choices are correct
B	7.125 MHz to 7.175 MHz
C	28.000 MHz to 28.025 MHz
D	21.275 MHz to 21.300 MHz

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	21.08 MHz to 21.09 MHz
B	On any frequency if power is less than 1 watt
C	28.20 MHz to 28.30 MHz
D	On any frequency if transmissions are in Morse code

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 all third-party traffic
B	You must keep a record of the manufacturer of your equipment and the antenna used
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 date, time, frequency, power level, and stations worked

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
B	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Under any circumstances in which third party messages are permitted by FCC rules
B	Only when the message is intended for licensed radio amateurs
C	Under no circumstances except for emergencies
D	Only when the message is intended for third parties in areas where licensing is controlled by the FCC

8. - G2A02

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

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

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	Approximately 6 kHz
C	2 kHz to 3 kHz
D	150 Hz to 500 Hz

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	You are sending too fast
B	I am quitting for the day
C	There is interference on the frequency
D	I am ready to receive

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 signal strengths between the input and output of the repeater
B	Compare vertical and horizontal signal strengths on the input frequency
C	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
D	All these choices are correct

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	LSB
B	CW
C	USB
D	DSB

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At any point
C	Only at the maximum point
D	At the summer solstice

14. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Propagation via ordinary skywave communications is not possible over that path
B	HF communications over the path are enhanced
C	Double-hop propagation along the path is more common
D	Propagation over the path on all HF frequencies is enhanced

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The lowest frequency which is refracted back to Earth
B	The highest frequency which is refracted back to Earth
C	The frequency at which the signal-to-noise ratio approaches unity
D	The frequency at which the signal-to-noise ratio is 6 dB

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To reduce the transmitter power when driving a linear amplifier
C	To prevent receiver overload from strong incoming signals
D	To reduce power consumption when operating from batteries

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The local oscillator of the transmitter
B	The attenuated RF output of the transmitter
C	An external RF oscillator
D	The transmitter balanced mixer output

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	An item of station equipment starts to draw excessive amounts of current
B	You receive reports of “hum” on your station’s transmitted signal
C	The SWR reading for one or more antennas is suddenly very high
D	You receive reports of harmonic interference from your station

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 MHz to 7.181 MHz
B	7.178 MHz to 7.184 MHz
C	7.175 MHz to 7.178 MHz
D	7.1765 MHz to 7.1795 MHz

20. - G4E11

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

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

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Resistance is cancelled
B	Inductive reactance and capacitive reactance cancel
C	Current and voltage are equal
D	The circuit radiates all its energy in the form of radio waves

22. - G5B06

What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

Select	Answer
A	1.4 watts
B	353.5 watts
C	400 watts
D	100 watts

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	3.3 millihenries
B	3.3 henries
C	30 millihenries
D	0.30 henries

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Screen grid
C	Trigger electrode
D	Suppressor grid

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The composition, or “mix,” of materials used
B	The ratio of outer diameter to inner diameter
C	Its thickness
D	Its conductivity

26. - G7A02

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

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the DC input power by the DC output power
B	Divide the RF output power by the DC input power
C	Multiply the RF input power by the reciprocal of the RF output power
D	Add the RF input power to the DC output power

28. - G7C14

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

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

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By using a transceiver’s computer data interface protocol to change frequencies
B	By reconfiguring the CW keying input to act as a tone generator
C	By keying an FM transmitter with a sub-audible tone
D	By changing an oscillator’s frequency directly with a digital control signal

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To prevent overmodulation
B	Some modes have high duty cycles that could exceed the transmitter’s average power rating
C	To aid in tuning your transmitter
D	To allow time for the other station to break in during a transmission

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	FT8
B	AMTOR
C	MFSK32
D	MSK144

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation decreases
B	Attenuation is independent of frequency
C	Attenuation increases
D	Attenuation follows Marconi’s Law of Attenuation

33. - G9B06

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

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

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1 wavelength
B	3/4 wavelength
C	1/4 wavelength
D	1/2 wavelength

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Polarization diversity
C	Wide bandwidth
D	Harmonic suppression