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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	All three regions
B	Region 3
C	Region 1
D	Region 2

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	100 feet
B	50 feet
C	200 feet
D	300 feet

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	21 years
B	There is no age limit
C	18 years
D	12 years

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Countries in ITU Region 1
B	Countries in ITU Region 2
C	Every foreign country, unless there is a third party agreement in effect with that country
D	Any country which is not a member of the International Amateur Radio Union (IARU)

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Phase modulation
B	Double sideband
C	Single sideband
D	Frequency modulation

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When the President's War Emergency Powers have been invoked
B	Only when all amateur stations are instructed to stop transmitting
C	When they seize your equipment for use in disaster communications
D	When they declare a temporary state of communication emergency

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The speed at which the CQ was sent
B	The fastest speed at which you are comfortable copying
C	A slow speed until contact is established
D	At the standard calling speed of 5 wpm

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	An isotropic antenna
B	A quarter-wave vertical antenna
C	A directional antenna
D	An omnidirectional antenna

10. - G2E01

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

Select	Answer
A	LSB
B	DSB
C	USB
D	CW

11. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on the Earth?

Select	Answer
A	28 days
B	1 to 2 hours
C	8 minutes
D	20 to 40 hours

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function during a 24 hour period
B	The Lowest Usable Frequency for communications between two points
C	The Lowest Usable Frequency during a 24 hour period
D	The Longest Universal Function for communications between two points

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun has just set
B	Where the Sun is rising
C	Where the Sun is on the opposite side of the Earth
D	Where the Sun is overhead

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce signal overload due to strong incoming signals
B	To reduce power consumption when operating from batteries
C	To slow down received CW signals for better copy
D	To reduce the transmitter power when driving a linear amplifier

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Measuring the turns ratio of a power transformer
B	Determining the gain of a directional antenna
C	Determining the impedance of an unknown or unmarked coaxial cable
D	Measuring the front to back ratio of an antenna

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	Using a balun to feed an unbalanced antenna
C	Not using a balun or line isolator to feed balanced antennas
D	Arcing at a poor electrical connection

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces harmonic distortion
B	It increases average power
C	It increases peak power
D	It reduces intermodulation distortion

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using resistor wire
B	To the battery using resistor wire
C	To the battery using heavy gauge wire
D	To the alternator or generator using heavy gauge wire

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ohm
B	Watt
C	Volt
D	Ampere

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	20.5 percent
C	10.9 percent
D	12.2 percent

21. - G5C10

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

Select	Answer
A	3.3 millihenrys
B	0.30 henrys
C	30 millihenrys
D	3.3 henrys

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Lower inductance
B	Higher breakdown voltage
C	Lower capacitance
D	Longer switching times

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special watertight connector for use in marine applications
B	A family of multiple circuit connectors suitable for audio and control signals
C	A special connector for microwave interfacing
D	A DC power connector rated for currents between 30 and 50 amperes

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 1
C	Symbol 2
D	Symbol 7

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is high only when both inputs are high
C	Output is low only when both inputs are high
D	Output is low when either or both inputs are high

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	A digital processor chip
B	A digital to analog converter
C	All of the these choices are correct
D	An analog to digital converter

27. - G8A02

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

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

28. - G8B05

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

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

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The receiver is busy decoding the packet
B	The entire file has been received correctly
C	The receiver is reporting the packet was received without error
D	The receiver is requesting the packet be retransmitted

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	The higher the transmission line loss, the more accurate the SWR measurement will be
C	The higher the transmission line loss, the more the SWR will read artificially low
D	The higher the transmission line loss, the more the SWR will read artificially high

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	16 feet
B	11 feet
C	8 feet
D	21 feet

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	2.54 dB higher
B	3 dB higher
C	3 dB lower
D	About the same

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To prevent out of band operation
B	To notch spurious frequencies
C	To permit multiband operation
D	To provide balanced feed point impedance

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed in a wet area
B	It should limited to 10 feet in height
C	It should be installed such that it is protected against unauthorized access
D	It should not be installed higher than you can reach

35. - G0B11

Which of the following is good practice for lightning protection grounds?

Select	Answer
A	They must be bonded to all buried water and gas lines
B	Bends in ground wires must be made as close as possible to a right angle
C	They must be bonded together with all other grounds
D	Lightning grounds must be connected to all ungrounded wiring

Figure G7-1