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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	18155 kHz
C	21300 kHz
D	24900 kHz

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The ITU
B	The Control Operator
C	The IEEE
D	The FCC

3. - G1C10

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

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

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

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
B	Only in the non-phone Extra Class segments of the bands
C	On any band segment where digital operation is permitted
D	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	A general call for any station
B	The caller is listening for a station in Germany
C	A distress call
D	The caller is looking for any station outside their own country

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 to 50 Hz
B	1 to 3 kHz
C	150 to 500 Hz
D	3 to 6 kHz

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Automatic keyers are used to send Morse code instead of hand keys
B	Transmitting stations can receive between code characters and elements
C	An operator must activate a manual send/receive switch before and after every transmission
D	Breaking stations send the Morse code prosign BK

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

Select	Answer
A	To coordinate repeaters for efficient and orderly spectrum usage
B	To conduct efficient and orderly amateur licensing examinations
C	To encourage self-regulation and compliance with the rules by radio amateur operators
D	To provide emergency and public safety communications

10. - G2E01

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

Select	Answer
A	DSB
B	USB
C	LSB
D	CW

11. - G3A02

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

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

12. - G3B07

What does LUF stand for?

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

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Sporadic-E skip
B	Faraday rotation
C	Scatter
D	Short-path skip

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

15. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	A multimeter
B	An antenna noise bridge
C	A Q meter
D	A field strength meter

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding shunt inductors to the conductors
B	Adding an additional insulating jacket to the cable
C	Placing a ferrite choke around the cable
D	Adding series capacitors to the conductors

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Prevent distortion of voice signals
B	Increase the intelligibility of transmitted phone signals during poor conditions
C	Decrease high-frequency voice output to prevent out of band operation
D	Increase transmitter bass response for more natural sounding SSB signals

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 narrow the operating bandwidth of the antenna
C	To increase the "Q" of the antenna
D	To reduce the chance of damage if the antenna should strike an object

19. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the amplitude of the applied AC increases, the reactance decreases

20. - G5B11

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

Select	Answer
A	1.414
B	1.00
C	2.00
D	0.707

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

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

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

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	MMIC
B	Digital
C	Analog
D	Programmable Logic

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Transformers and transducers
B	Quartz crystals
C	Capacitors and inductors
D	Diodes

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier in which the output preserves the input waveform
C	An amplifier used as a frequency multiplier
D	Any RF power amplifier used in conjunction with an amateur transceiver

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 using direct signal phasing
D	By converting the signal from analog to digital and using digital processing

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The waveform created by connecting the peak values of the modulated signal
B	The carrier frequency that contains the signal
C	Spurious signals that envelop nearby frequencies
D	The bandwidth of the modulated signal

28. - G8B05

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

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

29. - G8C05

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

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

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR makes it difficult to measure transmission line loss
B	If a transmission line is lossy, high SWR will increase the loss
C	High SWR reduces the relative effect of transmission line loss
D	There is no interaction between transmission line loss and SWR

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface of the Earth or buried a few inches below the ground
B	As high as possible above the ground
C	At the center of the antenna
D	Parallel to the antenna element

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

Select	Answer
A	Approximately 6 dB higher
B	Approximately 3 dB higher
C	Approximately 1.5 dB higher
D	Approximately 9 dB higher

33. - G9D09

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

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

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It heats body tissue
B	It causes the blood count to reach a dangerously low level
C	It cools body tissue
D	It causes radiation poisoning

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	All of these choices are correct
C	Notify the electric company that a person will be working on the tower
D	Unground the base of the tower