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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	3900 kHz
B	1875 kHz
C	4005 kHz
D	3750 kHz

2. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Automatic identification of repeaters
B	Identifying net frequencies
C	Transmission of bulletins of general interest to Amateur Radio licensees
D	Observation of propagation and reception

3. - G1C11

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

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

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 two General Class or higher VEs must be present, but only one need be Extra Class
C	At least two General Class or higher VEs must be present
D	At least three General Class or higher VEs must observe the examination

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When operating within one mile of an FCC Monitoring Station
B	When a station is transmitting spread spectrum emissions
C	When using a band where the Amateur Service is secondary
D	All of these choices are correct

6. - G2A11

What does the expression "CQ DX" usually indicate?

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

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	Listen for 2 minutes before calling CQ
B	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
C	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
D	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response

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	An operator must activate a manual send/receive switch before and after every transmission
C	Transmitting stations can receive between code characters and elements
D	Breaking stations send the Morse code prosign BK

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	When the contact is with amateurs in any country as long as the communication is conducted in English
B	Only when the foreign country is a member of the International Amateur Radio Union
C	Only when the foreign country has a formal third party agreement filed with the FCC
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3570 - 3600 kHz
B	3700 - 3750 kHz
C	3500 - 3525 kHz
D	3775 - 3825 kHz

11. - G3A15

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

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

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	A well-defined echo might be heard
C	Signal strength increased by 3 dB
D	The signal might be cancelled causing severe attenuation

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagations is through ducts in F region which absorb most of the energy
B	Signals are scattered from the magnetosphere which is not a good reflector
C	Only a small part of the signal energy is scattered into the skip zone
D	Propagation is through ground waves which absorb most of the signal energy

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The transceiver is operating from an external power source
B	The radio is operating at half power
C	The transmitter is emitting an SSB signal, as opposed to DSB operation
D	The transceiver is set to different transmit and receive frequencies

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Permanent damage to the analyzer may occur if it is operated into a high SWR
B	Strong signals from nearby transmitters can affect the accuracy of measurements
C	The analyzer can be damaged if measurements outside the ham bands are attempted
D	Connecting the analyzer to an antenna can cause it to absorb harmonics

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Connect all equipment grounds together
B	Use a ground loop for best conductivity
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Install an RF filter in series with the ground wire

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 8 times
C	Approximately 4 times
D	Approximately 1.5 times

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	All of these choices are correct
B	The vehicle control computer
C	The battery charging system
D	The fuel delivery system

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Increase the power output of the first circuit
B	Reduce the power output of the first circuit
C	Insert an LC network between the two circuits
D	Insert a circulator between the two circuits

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 watts
B	Approximately 11 watts
C	Approximately 61 milliwatts
D	Approximately 11 milliwatts

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual capacitance
B	Displacement current coupling
C	Capacitive coupling
D	Mutual inductance

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The gate is separated from the channel with a thin insulating layer
B	The source is separated from the drain by a thin insulating layer
C	The gate is formed by a back-biased junction
D	The source is formed by depositing metal on silicon

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It has a wide viewing angle
B	It offers a wide dynamic range
C	All of these choices are correct
D	It requires ambient or back lighting

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. - G7B14

Which of the following describes a linear amplifier?

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By differential spurious phasing
B	By converting the signal from analog to digital and using digital processing
C	By using direct signal phasing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A06

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

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

28. - G8B03

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

Select	Answer
A	Synthesizing
B	Phase inverting
C	Heterodyning
D	Cancellation

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It requests the packet be retransmitted
B	It sends the packet back to the transmitting station
C	It requests a change in transmitting protocol
D	It terminates the contact

30. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The distance between the centers of the conductors and the radius of the conductors
C	The distance between the centers of the conductors and the length of the line
D	The frequency of the signal and the length of the line

31. - G9B04

What is the radiation pattern of a dipole antenna in free space in the plane of the conductor?

Select	Answer
A	It has a pair of lobes on one side of the antenna and a single lobe on the other side
B	It is a figure-eight off both ends of the antenna
C	It is a figure-eight at right angles to the antenna
D	It is a circle (equal radiation in all directions)

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The polarization of the radiated signal changes from horizontal to vertical
B	There is no change in polarization
C	The polarization of the radiated signal changes from vertical to horizontal
D	The radiated signal becomes circularly polarized

33. - G9D01

What does the term NVIS mean as related to antennas?

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

34. - G0A01

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

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

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	A soldered joint will likely be destroyed by the heat of a lightning strike
B	The resistance of solder is too high
C	Solder flux will prevent a low conductivity connection
D	Solder has too high a dielectric constant to provide adequate lightning protection

Figure G7-1