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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	2560 kHz
B	1855 kHz
C	3560 kHz
D	3650 kHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Identifying net frequencies
C	Automatic identification of repeaters
D	Transmission of bulletins of general interest to Amateur Radio licensees

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	2.8 kHz
C	1.8 kHz
D	3 kHz

4. - G1D04

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

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

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

6. - G2A05

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

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that allows only digital contacts in that portion of the band
B	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
C	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
D	A portion of the band that has been voluntarily set aside for digital contacts only

8. - G2C03

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

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

9. - G2D10

What is QRP operation?

Select	Answer
A	Transmission using Quick Response Protocol
B	Low power transmit operation
C	Remote piloted model control
D	Traffic relay procedure net operation

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	ARES
B	Skywarn
C	Winlink
D	RTTY

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	Microwave communications become unstable
B	Long-distance communication in the upper HF and lower VHF range is enhanced
C	High-frequency radio signals become weak and distorted
D	Frequencies above 300 MHz become usable for long-distance communication

12. - G3B12

What factor or factors affect the MUF?

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

13. - G3C02

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

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

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	Q Multiplier
B	Balanced modulator
C	SWR Bridge
D	Antenna coupler or antenna tuner

15. - G4B13

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

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

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	Mixing products are greatly reduced
C	A wide range of filter bandwidths and shapes can be created
D	The DSP filter is much more effective at VHF frequencies

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 to 7.181 MHz
B	7.178 to 7.184 MHz
C	7.175 to 7.178 MHz
D	7.1765 to 7.1795 MHz

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

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ampere
B	Ohm
C	Volt
D	Watt

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	0.707
B	1.00
C	1.414
D	2.00

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its saturation and cutoff regions
B	Its peak and valley current points
C	Its enhancement and depletion modes
D	Its active region (between the cutoff and saturation regions)

23. - G6B07

Which of the following is an advantage of an LED indicator compared to an incandescent indicator?

Select	Answer
A	Lower power consumption
B	Faster response time
C	Longer life
D	All of these choices are correct

24. - G7A11

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

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

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By differential spurious phasing
B	By converting the signal from digital to analog and taking the difference of mixing products
C	By converting the signal from analog to digital and using digital processing
D	By using direct signal phasing

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Multiplex modulation
B	Phase modulation
C	Pulse modulation
D	Amplitude modulation

28. - G8B05

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

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

29. - G8C05

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

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

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

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily increases
B	It peaks at about 1/8 wavelength above ground
C	It steadily decreases
D	It is unaffected by the height above ground

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 2/3 as much
B	About 1.5 times as much
C	About the same
D	About twice as much

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To permit multiband operation
C	To prevent out of band 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. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	15 amperes
B	30 amperes
C	100 amperes
D	60 amperes

Figure G7-1