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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Attempt to contact the station and request that it stop the interference
B	Notify the FCCs regional Engineer in Charge of the interference
C	Increase your transmitter's power to overcome the interference
D	Move to a clear frequency or stop transmitting

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	All of these choices are correct
D	In conformance with the rules of the IARU

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	Only on the Technician band segments until your license arrives in the mail
B	On any General or Technician Class band segment
C	On any General or Technician Class band segment except 30-meters and 60-meters
D	Only the Technician band segments until your upgrade is posted in the FCC database

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

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	The received signal is more natural sounding
B	It occupies less bandwidth
C	It provides more power output
D	It allows "hands free" operation

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Any control operator when normal communication systems are operational
B	A person holding an FCC issued amateur operator license or an appropriate government official
C	Only a person holding an FCC issued amateur operator license
D	Only a RACES net control operator

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	BK
B	AR
C	SK
D	KN

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	A directional antenna
B	An isotropic antenna
C	An omnidirectional antenna
D	A quarter-wave vertical antenna

10. - G2E04

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

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Improved HF long path propagation
B	Reduced long delayed echoes
C	Higher signal strength for HF signals passing through the polar regions
D	Auroras that can reflect VHF signals

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are completely absorbed by the ionosphere
B	They are bent back to the Earth
C	They pass through the ionosphere
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency below the Maximum Usable Frequency
B	The communication is during a sunspot maximum
C	The communication is during a sudden ionospheric disturbance
D	The signal is heard on a frequency above the Maximum Usable Frequency

14. - G4A01

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

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

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ohmmeter
B	An ammeter
C	An oscilloscope
D	A signal generator

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	Fewer digital components are required
C	Mixing products are greatly reduced
D	The DSP filter is much more effective at VHF frequencies

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a receiver
B	In an SWR bridge
C	In a conductance bridge
D	In a transmitter

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To increase the power handling capacity of a whip antenna
B	To allow remote tuning
C	To electrically lengthen a physically short antenna
D	To allow automatic band changing

19. - G5A03

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

Select	Answer
A	Reactance
B	Admittance
C	Conductance
D	Reluctance

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	20.5 percent
C	10.9 percent
D	12.2 percent

21. - G5C13

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

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

22. - G6A18

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	The magnetic properties of the core may be optimized for a specific range of frequencies
C	All of these choices are correct
D	Large values of inductance may be obtained

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. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Faster switching time makes higher output voltage possible
B	Fewer circuit components are required
C	High frequency operation allows the use of smaller components
D	All of these choices are correct

25. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A clocked array of circuits that passes data in steps along the array
C	An array of operational amplifiers used for tri-state arithmetic operations
D	A digital mixer

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	Product detector
B	IF filter
C	Balanced modulator
D	RF oscillator

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Angle convolution
B	Phase modulation
C	Phase convolution
D	Radian inversion

28. - G8B08

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

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

29. - G8C05

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

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

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

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It peaks at about 1/8 wavelength from the end
B	It steadily increases
C	It steadily decreases
D	It is unaffected by the location of the feed point

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
B	dBi refers to an isotropic antenna, dBd refers to a dipole antenna
C	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna
D	dBi refers to an isometric antenna, dBd refers to a discone antenna

33. - G9D01

What does the term NVIS mean as related to antennas?

Select	Answer
A	Non-Varying Indicated SWR
B	Nearly Vertical Inductance System
C	Non-Varying Impedance Smoothing
D	Near Vertical Incidence sky-wave

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Ensure that you and the antenna structure are grounded
B	All of these choices are correct
C	Wear a radiation badge
D	Turn off the transmitter and disconnect the feed line

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 16
B	AWG number 8
C	AWG number 12
D	AWG number 20