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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	An SWR meter with a peak-reading function
B	An oscilloscope with a high-stability crystal marker generator
C	A receiver with digital signal processing (DSP) noise reduction
D	A calibrated field strength meter with a calibrated antenna

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Parallel to the water supply line
B	Outside the building
C	Next to the closest power pole
D	As close to the station equipment as possible

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	18155 kHz
C	21300 kHz
D	24900 kHz

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
B	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
C	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
D	Only when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C06

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

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

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

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 1 through 4
B	No part
C	Anywhere in the band
D	Channels 42 through 45

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

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only SSTV contacts
B	Only contacts with other stations within the 48 contiguous states
C	Only digital contacts
D	Only contacts with stations not within the 48 contiguous states

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Chirpy or unstable signal
C	Report was read from an S meter rather than estimated
D	Key clicks

11. - G2D01

What is the Volunteer Monitor Program?

Select	Answer
A	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
B	Amateur volunteers who conduct amateur licensing examinations
C	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
D	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	Frequent retries or timeouts
B	All these choices are correct
C	Failure to establish a connection between stations
D	Long pauses in message transmission

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is improved
B	HF communication is disturbed
C	VHF/UHF ducting is disturbed
D	VHF/UHF ducting is improved

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	Solar radiation and ionospheric disturbances
C	Time of day and season
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 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 permit full duplex operation -- that is, transmitting and receiving at the same time
B	To transmit on one frequency and listen on another
C	To improve frequency accuracy by allowing variable frequency output (VFO) operation
D	To allow transmitting on two frequencies at once

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Antenna and feed line
B	Transmitter
C	All these choices are correct
D	Receiver

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	Overheating of ground straps
B	Corrosion of the ground rod
C	A ground loop
D	High RF voltages on the enclosures of station equipment

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 1.5 times
C	Approximately 4 times
D	Approximately 8 times

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The fuel delivery system
B	All these choices are correct
C	The control computers
D	The battery charging system

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reluctance
B	Admittance
C	Conductance
D	Reactance

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	6 watts
C	60 watts
D	24 watts

23. - G5C14

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

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

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	1.0 volts
B	0.7 volts
C	0.3 volts
D	0.1 volt

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	Large values of inductance may be obtained
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All these choices are correct

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Synchronous
B	Full-wave bridge
C	Half-wave
D	Full-wave

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A frequency multiplier and a mixer
B	An amplifier and a divider
C	A filter and an amplifier operating in a feedback loop
D	A circulator and a filter operating in a feed-forward loop

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Ultimate rejection
B	Insertion loss
C	Rolloff
D	Notch depth

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 waveform created by connecting the peak values of the modulated signal
D	The bandwidth 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	Quadrature response
B	Intermediate interference
C	Image response
D	Mixer interference

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	High and low
B	Dot and dash
C	On and off
D	Mark and space

32. - G9A05

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

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

33. - G9B11

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

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

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Loading coils in series with the element
B	Closer element spacing
C	Tapered-diameter elements
D	Larger-diameter elements

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