US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A09

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

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

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
B	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
C	Never
D	Only when there is no other means of communications readily available

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
B	Effective radiated power cannot exceed 1500 watts
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Only the minimum power necessary to carry out the desired communications should be used

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	Only on the Technician band segments until your license arrives in the mail
B	On any General or Technician Class band segment
C	On any General or Technician Class band segment except 30-meters and 60-meters
D	Only the Technician band segments until your upgrade is posted in the FCC database

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	The language being used for the contact
B	English only
C	English, Spanish, French, or German
D	Any language recognized by the United Nations

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Listen for 2 minutes before calling CQ
B	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
C	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
D	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

8. - G2C04

What does the Q signal "QRL?" mean?

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the angle at which an amateur satellite crosses the equator
B	A map that shows accurate land masses
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 particular location

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send QRL in Morse code
B	Transmit a connect message on the station's published frequency
C	Respond when the station broadcasts its SSID
D	Send an email to the system control operator

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

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

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have high intelligibility
B	They have very large swings in signal strength
C	All of these choices are correct
D	They have a wavering sound

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	Frequent connection timeouts
B	The VOX circuit does not un-key the transmitter
C	All of these choices are correct
D	The transmitter signal is distorted

15. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	A multimeter
B	A field strength meter
C	An antenna noise bridge
D	A Q meter

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Lack of rectification of the transmitter's signal in power conductors
B	Not using a balun or line isolator to feed balanced antennas
C	Arcing at a poor electrical connection
D	Using a balun to feed an unbalanced antenna

17. - 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 10 times less powerful
B	It is 20 times less powerful
C	It is 20 times more powerful
D	It is 100 times more powerful

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photon decomposition
B	Photovoltaic conversion
C	Photon emission
D	Photosynthesis

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ampere
B	Volt
C	Watt
D	Ohm

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

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

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	33.3 ohms
B	0.30 ohms
C	0.33 ohms
D	300 ohms

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The gate is separated from the channel with a thin insulating layer
B	The gate is formed by a back-biased junction
C	The source is separated from the drain by a thin insulating layer
D	The source is formed by depositing metal on silicon

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Power supply and amplifier
B	Microphone and transceiver
C	Amplifier and antenna
D	Computer and transceiver

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 5
B	Symbol 4
C	Symbol 2
D	Symbol 1

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To eliminate self-oscillations
B	To keep the carrier on frequency
C	To limit the modulation index
D	To cut off the final amplifier during standby periods

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Wide tuning range and no need for band switching
B	Relatively high power output
C	Relatively low power consumption
D	Variable frequency with the stability of a crystal oscillator

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's carrier is properly suppressed
B	The transmitter's automatic level control (ALC) is properly adjusted
C	Signal distortion caused by excessive drive
D	Signal distortion caused by insufficient collector current

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Synthesizing
B	Phase inverting
C	Cancellation
D	Heterodyning

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

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

30. - G9A14

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

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	High SWR makes it difficult to measure transmission line loss
C	If a transmission line is lossy, high SWR will increase the loss
D	There is no interaction between transmission line loss and SWR

31. - G9B06

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

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

32. - G9C01

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

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

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Length and spacing of the elements increase logarithmically from one end of the boom to the other
B	Gain varies logarithmically as a function of frequency
C	SWR varies periodically as a function of boom length
D	Impedance varies periodically as a function of frequency

34. - G0A09

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

Select	Answer
A	An SWR meter with a peak-reading function
B	A receiver with an S meter
C	An oscilloscope with a high-stability crystal marker generator
D	A calibrated field strength meter with a calibrated antenna

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	Only the two wires carrying voltage
B	Only the neutral wire
C	All wires
D	Only the ground wire

Figure G7-1