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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	30 meters
C	12 meters
D	60 meters

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Insure that the frequency and mode selected are within your license class privileges
B	All of these choices are correct
C	Follow generally accepted band plans agreed to by the Amateur Radio community
D	Monitor the frequency before transmitting

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	1200 baud
B	56 kilobaud
C	300 baud
D	19.6 kilobaud

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least three VEs of Technician Class or higher must observe the examination
B	At least three General Class or higher VEs must observe the examination
C	At least two General Class or higher VEs must be present
D	At least two General Class or higher VEs must be present, but only one need be Extra Class

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
B	The licensee of the coordinated repeater has primary responsibility to resolve the interference
C	Both repeater licensees share equal responsibility to resolve the interference
D	The frequency coordinator bears primary responsibility to resolve the interference

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
C	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

7. - G2B11

What frequency should be used to send a distress call?

Select	Answer
A	Only frequencies authorized for RACES or ARES stations
B	Whichever frequency has the best chance of communicating the distress message
C	Only frequencies used by police, fire or emergency medical services
D	Only frequencies that are within your operating privileges

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Operating full break-in
B	Closing station now
C	Listening for novice stations
D	Listening only for a specific station or stations

9. - G2D07

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 other than a dipole antenna, 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

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Joining an existing contact is not possible, PACTOR connections are limited to two stations
B	Send a NAK response continuously so that the sending station has to pause
C	Send broadcast packets containing your call sign while in MONITOR mode
D	Transmit a steady carrier until the PACTOR protocol times out and disconnects

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	None, because only areas on the night side of the Earth are affected
B	It disrupts signals on lower frequencies more than those on higher frequencies
C	It enhances propagation on all HF frequencies
D	It disrupts communications via satellite more than direct communications

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	A well-defined echo might be heard
B	The signal might be cancelled causing severe attenuation
C	Signal strength increased by 3 dB
D	Periodic fading approximately every 10 seconds

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The long path azimuth of a distant station
C	The short path azimuth of a distant station
D	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions

14. - G4A02

What is one advantage of selecting the opposite or "reverse" sideband when receiving CW signals on a typical HF transceiver?

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

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It decreases the loading on circuits being measured
B	It improves the frequency response
C	It improves the resolution of the readings
D	It decreases battery consumption in the meter

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby 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

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Splatter
B	All of these choices are correct
C	Excessive background pickup
D	Distorted speech

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

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

19. - G5A04

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

Select	Answer
A	Admittance
B	Conductance
C	Reluctance
D	Reactance

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 watts
B	Approximately 11 milliwatts
C	Approximately 61 milliwatts
D	Approximately 11 watts

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	1000 microfarads
B	0.07 microfarads
C	70 microfarads
D	14.3 microfarads

22. - G6A19

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

Select	Answer
A	Parallel to each other
B	Interleaved
C	In line
D	At right angles to each other

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	RJ-11
B	DB-25
C	PL-259
D	Octal

24. - G7A09

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

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

25. - G7B08

How is the efficiency of an RF power amplifier determined?

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

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio that provides computer interface for automatic logging of band and frequency
B	A radio that uses crystal filters designed using software
C	A radio in which most major signal processing functions are performed by software
D	A computer model that can simulate performance of a radio to aid in the design process

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Angle convolution
B	Phase convolution
C	Radian inversion
D	Phase modulation

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	31.5 Hz
B	500 Hz
C	1800 Hz
D	2300 Hz

29. - G8C06

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

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

30. - G9A08

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

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

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is too high, the pattern becomes unpredictable
B	Antenna height has no effect on the pattern
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It does not require any inductors or capacitors
B	It is useful for matching multiband antennas
C	All of these choices are correct
D	It does not require that the elements be insulated from the boom

33. - G9D07

Which of the following describes a log periodic antenna?

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

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	High duty cycle transmitters are exempt from RF exposure requirements
B	A lower transmitter duty cycle permits greater short-term exposure levels
C	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
D	A higher transmitter duty cycle permits greater short-term exposure levels

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

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

Figure G7-1