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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14305 kHz
B	14005 kHz
C	14405 kHz
D	14105 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 the rules of the IARU
C	All of these choices are correct
D	In conformance with Amateur Radio custom

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	200 watts PEP output

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
B	The person must hold an FCC granted Amateur Radio license of General Class or above
C	The person must be a resident of the U.S. for a minimum of 5 years
D	The person's home citizenship must be in ITU region 2

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

6. - G2A02

Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

Select	Answer
A	Double sideband
B	Vestigial sideband
C	Lower sideband
D	Upper 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	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
C	Listen for 2 minutes before calling CQ
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. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	I acknowledge receipt
B	We have already confirmed by card
C	Send slower
D	We have worked before

9. - G2D06

How is a directional antenna pointed when making a "long-path" contact with another station?

Select	Answer
A	180 degrees from its short-path heading
B	Along the gray line
C	Toward the north
D	Toward the rising Sun

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.150 - 14.225 MHz
B	14.000 - 14.050 MHz
C	14.275 - 14.350 MHz
D	14.070 - 14.100 MHz

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The Sun's rotation on its axis
B	The position of the Moon in its orbit
C	Cyclic variation in the Earth's radiation belts
D	Long term oscillations in the upper atmosphere

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	1,200 miles
B	12,000 miles
C	180 miles
D	2,500 miles

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric layer involved is unstable
B	Energy is scattered into the skip zone through several different radio wave paths
C	Ground waves are absorbing much of the signal
D	The E-region is not present

14. - G4A12

Which of the following is a common use for the dual VFO feature on a transceiver?

Select	Answer
A	To permit full duplex operation, that is transmitting and receiving at the same time
B	To allow transmitting on two frequencies at once
C	To permit monitoring of two different frequencies
D	To facilitate computer interface

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio frequency range square wave signals of equal amplitude
C	Two swept frequency tones
D	Two audio signals of the same frequency shifted 90 degrees

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	An item of station equipment starts to draw excessive amounts of current
B	You receive reports of "hum" on your station's transmitted signal
C	You receive reports of harmonic interference from your station
D	The SWR reading for one or more antennas is suddenly very high

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.3455 to 14.3485 MHz
B	14.347 to 14.647 MHz
C	14.347 to 14.350 MHz
D	14.344 to 14.347 MHz

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To reduce the chance of damage if the antenna should strike an object
C	To increase the "Q" of the antenna
D	To narrow the operating bandwidth of the antenna

19. - G5A12

What is one reason to use an impedance matching transformer?

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

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1060 watts
B	2120 watts
C	1500 watts
D	530 watts

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	4.7 microfarads
B	0.47 microfarads
C	47 microfarads
D	47,000 microfarads

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's internal capacitance would detune the circuit
B	The resistor's tolerance value would not be adequate for such a circuit
C	The resistor's inductance could make circuit performance unpredictable
D	The resistor could overheat

23. - G6B10

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

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

24. - G7A11

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

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

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	The binary number system is most accurate
B	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state
C	Binary numbers are more compatible with analog circuitry
D	All of these choices are correct

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	Product detector
D	Phase inverter

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Audio fidelity is improved
B	Greater modulation percentage is obtainable with lower distortion
C	Available transmitter power can be used more effectively
D	Simpler receiving equipment can be used

28. - G8B03

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

Select	Answer
A	Synthesizing
B	Cancellation
C	Heterodyning
D	Phase inverting

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Binary
C	Varicode
D	Volumetric

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	2:1
B	4:1
C	1:2
D	1:4

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials
B	Slope the radials downward
C	Slope the radials upward
D	Shorten the radials

32. - G9C13

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

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

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Directional receiving for low HF bands
C	Portable direction finding at lower HF frequencies
D	Portable direction finding at higher HF frequencies

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	An oscilloscope with a high-stability crystal marker generator
C	A calibrated field strength meter with a calibrated antenna
D	A receiver with an S meter

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut off the power supply if too much voltage is produced
B	To shut down the unit if it becomes too hot
C	To ensure that dangerous voltages are removed if the cabinet is opened
D	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty

Figure G7-1