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

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	Overvoltage on the hot wires
B	All these choices are correct
C	Current flowing from one or more of the hot wires to the neutral wire
D	Current flowing from one or more of the hot wires directly to ground

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	80 meters, 40 meters, 20 meters, and 15 meters
C	160 meters, 60 meters, 15 meters, and 12 meters
D	60 meters, 30 meters, 17 meters, and 12 meters

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 transmissions are in Morse code
C	28.20 MHz to 28.30 MHz
D	On any frequency if power is less than 1 watt

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	1500 watts PEP
B	10 watts RMS
C	ERP of 100 watts PEP with respect to a dipole
D	ERP of 100 watts PEP with respect to an isotropic antenna

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	On any General or Technician class band segment except 30 meters and 60 meters
D	Only on the Technician band segments until you have a receipt for the FCC application fee payment

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 control operator of the interrogating station must hold an Amateur Extra class license
C	The station initiating the contact must be under local or remote control
D	The interrogating transmission must be made by another automatically controlled station

8. - G2A08

What is the recommended way to break into a phone contact?

Select	Answer
A	Say “Breaker Breaker”
B	Say your call sign once
C	Say “QRZ” several times, followed by your call sign
D	Say “CQ” followed by the call sign of either station

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per month
B	No more than 1 hour per week
C	No more than 1 hour per month
D	No more than 2 hours per week

10. - G2C06

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

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows true bearings and distances from a specific location

12. - G2E02

What is VARA?

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

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve high-latitude HF propagation
B	Improve ground wave propagation
C	Degrade ground wave propagation
D	Degrade high-latitude HF propagation

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the MUF
B	Just above the critical frequency
C	Just above the LUF
D	Just below the critical frequency

15. - G3C07

What makes HF scatter signals often sound distorted?

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

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	More stations can be accommodated within a given signal passband
C	Accidental out-of-band operation can be prevented
D	It may be possible to reduce or eliminate interference from other signals

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of the carrier and undesired sideband for SSB
B	Percentage of carrier phase shift
C	Linearity
D	Percentage of frequency modulation

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	On-and-off humming or clicking
C	Severely distorted audio
D	A chirpy CW signal

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz below the edge of the band
B	At least 1 kHz below the edge of the segment
C	At least 3 kHz above the edge of the band
D	At least 1 kHz above the edge of the segment

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To increase the power handling capacity of a whip antenna
B	To reduce radiation resistance
C	To lower the radiation angle
D	To electrically lengthen a physically short antenna

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very high
B	Impedance is equal to the geometric mean of the inductance and capacitance
C	Resonance causes impedance to be very low
D	Impedance is equal to the arithmetic mean of the inductance and capacitance

22. - G5B01

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

Select	Answer
A	Approximately 9 dB
B	Approximately 6 dB
C	Approximately 3 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	70 millihenries
C	7 millihenries
D	14.3 millihenries

24. - G6A10

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

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

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	50 MHz
B	40 GHz
C	4 GHz
D	500 MHz

26. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A sine wave at half the frequency of the AC input
B	A series of DC pulses at the same frequency as the AC input
C	A series of DC pulses at twice the frequency of the AC input
D	A steady DC voltage

27. - G7B10

Which of the following describes a linear amplifier?

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

28. - G7C03

What is one reason to use an impedance matching transformer at a transmitter output?

Select	Answer
A	To minimize transmitter power output
B	To minimize radiation resistance
C	To present the desired impedance to the transmitter and feed line
D	To reduce power supply ripple

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency modulation
C	Frequency transformation
D	Frequency conversion

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	101.75 Hz
B	5 kHz
C	60 kHz
D	416.7 Hz

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	Packets will be routed incorrectly
B	Encoding reverts to the default character set
C	The connection is dropped
D	The checksum overflows

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	5:1
B	1:1
C	Between 1:1 and 5:1 depending on the reflected power at the transmitter
D	Between 1:1 and 5:1 depending on the characteristic impedance of the line

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Bi-directional in azimuth
B	Isotropic
C	Omnidirectional in azimuth
D	Hemispherical

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The power radiated in the major lobe compared to that in the opposite direction
C	The number of directors versus the number of reflectors
D	The relative position of the driven element with respect to the reflectors and directors

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By varying the base loading inductance
B	By varying its body capacitance
C	By extending and retracting the whip
D	By deploying a capacitance hat