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	1855 kHz
B	3560 kHz
C	2560 kHz
D	3650 kHz

2. - G1B11

How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

Select	Answer
A	In conformance with good engineering and good amateur practice
B	In conformance with Amateur Radio custom
C	In conformance with the rules of the IARU
D	All of these choices are correct

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

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. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only during an FCC declared general state of communications emergency
B	Under no circumstances
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only if the 10-meter repeater control operator holds at least a General Class license

6. - G2A05

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

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

7. - G2B11

What frequency should be used to send a distress call?

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

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Change frequency
B	Repeat everything twice
C	Send slower
D	Increase your power

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international contacts
B	To help with a reply if the FCC requests information
C	The ITU requires a log of all international third party traffic
D	The log provides evidence of operation needed to renew a license without retest

10. - G2E10

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

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

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	20 to 40 hours
B	14 days
C	4 to 8 minutes
D	28 days

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Double hop propagation along the path is more common
B	HF communications over the path are enhanced
C	No HF radio frequency will support ordinary sky-wave communications over the path
D	Propagation over the path on all HF frequencies is enhanced

13. - G3C04

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

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

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Maximum power output without exceeding maximum allowable plate current
B	Minimum plate current without exceeding maximum allowable grid current
C	Highest plate voltage while minimizing grid current
D	Minimum SWR on the antenna

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for RF measurements
B	Better for measuring computer circuits
C	Better precision for most uses
D	Faster response

16. - G4C12

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

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

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	7.1765 to 7.1795 MHz
B	7.178 to 7.184 MHz
C	7.178 to 7.181 MHz
D	7.175 to 7.178 MHz

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	"Picket Fencing" signal variation
B	The antenna system
C	The wire gauge of the DC power line to the transceiver
D	FCC rules limiting mobile output power on the 75-meter band

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To maximize the transfer of power
B	To minimize radiation resistance
C	To minimize transmitter power output
D	To reduce power supply ripple

20. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	34 volts
B	8.5 volts
C	12 volts
D	24 volts

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	An inductor in series
C	A capacitor in parallel
D	A resistor in series

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Trigger electrode
B	Screen Grid
C	Control grid
D	Heater

23. - G6B13

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

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

24. - G7A09

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

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

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	8
B	16
C	6
D	3

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Discriminator
B	Mixer
C	Phase inverter
D	Product detector

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient bandwidth
B	Frequency drift
C	Insufficient audio
D	Excessive bandwidth

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To aid in tuning your transmitter
B	Some modes have high duty cycles which could exceed the transmitter's average power rating.
C	All of these choices are correct
D	To allow time for the other station to break in during a transmission

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By using a parity bit with each character
B	By controlling transmitter output power for optimum signal strength
C	By transmitting redundant information with the data
D	By using the varicode character set

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation is independent of frequency
B	Attenuation reaches a maximum at approximately 18 MHz
C	Attenuation decreases
D	Attenuation increases

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 is unaffected by the height above ground
C	It steadily decreases
D	It peaks at about 1/8 wavelength above ground

32. - G9C13

Approximately how long is each side of the driven element of a quad antenna?

Select	Answer
A	1/2 wavelength
B	1/4 wavelength
C	1 wavelength
D	3/4 wavelength

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. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	Take action to prevent human exposure to the excessive RF fields
D	All of these choices are correct

35. - G0B11

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

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

Figure G7-1