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	18155 kHz
B	21300 kHz
C	14250 kHz
D	24900 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	All of these choices are correct
B	In conformance with the rules of the IARU
C	In conformance with good engineering and good amateur practice
D	In conformance with Amateur Radio custom

3. - G1C08

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

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
C	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Locally controlled station
B	Robotically controlled station
C	Fail-safe digital station
D	Automatically controlled digital station

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	Only one sideband and the carrier are transmitted; the other sideband is suppressed
C	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
D	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands

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	Whichever frequency has the best chance of communicating the distress message
D	Only frequencies that are within your operating privileges

8. - G2C03

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

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

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows true bearings and distances from a particular location
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
D	A map that shows accurate land masses

10. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	The mark and space frequencies may be reversed
B	You may have selected the wrong baud rate
C	You may be listening on the wrong sideband
D	All of these choices are correct

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved high-latitude HF propagation
B	Improved chances of UHF ducting
C	Degraded high-latitude HF propagation
D	Improved ground-wave propagation

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	Propagation over the path on all HF frequencies is enhanced
D	No HF radio frequency will support ordinary sky-wave communications over the path

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The D layer
B	The E layer
C	The F1 layer
D	The F2 layer

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To enhance the reception of a specific frequency on a crowded band
C	To reduce interference from carriers in the receiver passband
D	To restrict the transmitter voice bandwidth

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Input impedance is much lower
B	Complex impedances can be easily measured
C	Complex waveforms can be measured
D	An oscilloscope uses less power

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Arcing at a poor electrical connection
B	Lack of rectification of the transmitter's signal in power conductors
C	Not using a balun or line isolator to feed balanced antennas
D	Using a balun to feed an unbalanced antenna

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	Your displayed carrier frequency may be set at the edge of the segment
B	At least 3 kHz below the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 3 kHz above the edge of the segment

18. - G4E05

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

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

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Admittance
B	Conductance
C	Reactance
D	Reluctance

20. - G5B09

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

Select	Answer
A	34 volts
B	12 volts
C	24 volts
D	8.5 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	A resistor in series
C	A capacitor in parallel
D	An inductor in series

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A field effect transistor
B	A bipolar transistor
C	A varistor
D	A tunnel diode

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 DC power connector rated for currents between 30 and 50 amperes
C	A family of multiple circuit connectors suitable for audio and control signals
D	A special connector for microwave interfacing

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A sine wave at half the frequency of the AC input
B	A steady DC voltage
C	A series of DC pulses at the same frequency as the AC input
D	A series of DC pulses at twice the frequency of the AC input

25. - G7B07

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

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

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio that provides computer interface for automatic logging of band and frequency
B	A computer model that can simulate performance of a radio to aid in the design process
C	A radio that uses crystal filters designed using software
D	A radio in which most major signal processing functions are performed by software

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	Angle convolution
C	Phase modulation
D	Phase convolution

28. - G8B08

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

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

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	The number varies
B	8
C	5
D	7

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

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	42 feet
C	263 feet
D	131 feet

32. - G9C15

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

Select	Answer
A	Slightly less than 1/2 wavelength
B	Slightly less than 1/4 wavelength
C	Slightly more than 1/2 wavelength
D	Slightly more than 1/4 wavelength

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has high losses compared to other types of antennas
B	All of these choices are correct
C	It has poor directivity
D	Its impedance is too low for effective matching

34. - G0A06

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

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

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator should be located in a well-ventilated area
B	Fuel should be stored near the generator for rapid refueling in case of an emergency
C	All of these choices are correct
D	The generator must be insulated from ground