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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	160 meters
B	12 meters
C	17 meters
D	30 meters

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	A beacon station may not use automatic control
B	The frequency must be coordinated with the National Beacon Organization
C	There must be no more than one beacon signal transmitting in the same band from the same station location
D	The frequency must be posted on the Internet or published in a national periodical

3. - G1C02

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

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

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	30 days
C	For as long as your current license is valid
D	365 days

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

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Chirpy or unstable signal
B	Key clicks
C	Report was read from an S meter rather than estimated
D	100 percent copy

9. - G2D02

Which of the following are objectives of the Amateur Auxiliary?

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

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Failure to establish a connection between stations
B	Long pauses in message transmission
C	Frequent retries or timeouts
D	All of these choices are correct

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	High-frequency radio signals become weak and distorted
B	Long-distance communication in the upper HF and lower VHF range is enhanced
C	Frequencies above 300 MHz become usable for long-distance communication
D	Microwave communications become unstable

12. - G3B07

What does LUF stand for?

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation using high elevation angles
C	Propagation near the MUF
D	Long path HF propagation at sunrise and sunset

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	Improper action of ALC distorts the signal and can cause spurious emissions
B	All of these choices are correct
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	ALC will invert the modulation of the AFSK mode

15. - G4B07

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

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

16. - G4C09

How can a ground loop be avoided?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Connect all ground conductors in series
C	Connect all ground conductors to a single point
D	Connect the AC neutral conductor to the ground wire

17. - G4D06

Where is an S meter found?

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

18. - G4E02

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

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

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All of these choices are correct
B	A transformer
C	A length of transmission line
D	A Pi-network

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	8.5 volts
D	24 volts

21. - G5C18

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

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

22. - G6A05

What is the approximate junction threshold voltage of a conventional silicon diode?

Select	Answer
A	0.7 volts
B	0.3 volts
C	1.0 volts
D	0.1 volt

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Resistor Operated Memory
B	Read Only Memory
C	Resistant to Overload Memory
D	Random Operational Memory

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 4
B	Symbol 11
C	Symbol 1
D	Symbol 5

25. - G7B12

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class B
C	Class C
D	Class AB

26. - G7C10

How is Digital Signal Processor filtering accomplished?

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

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Phase modulation
B	Double sideband
C	Single sideband
D	Frequency modulation

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It is required by FCC rules
B	It improves impedance matching of the antenna
C	It minimizes power consumption in the receiver
D	It results in the best signal to noise ratio

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Varicode Error Correction is used to ensure accurate message reception
B	Upper case letters use longer Varicode signals and thus slow down transmission
C	Higher power is needed as compared to RTTY for similar error rates
D	Upper case letters make the signal stronger

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	1.25:1
B	2.5:1
C	2:1
D	You cannot determine SWR from impedance values

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	32 feet
B	8 feet
C	24 feet
D	16 feet

32. - G9C20

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

Select	Answer
A	dBi refers to an isometric antenna, dBd refers to a discone 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 inverted-vee antenna, dBd refers to a downward reflecting antenna

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	Length and spacing of the elements increase logarithmically from one end of the boom to the other
C	SWR varies periodically as a function of boom length
D	Impedance varies periodically as a function of frequency

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on FCC OET Bulletin 65
B	All of these choices are correct
C	By calculation based on computer modeling
D	By measurement of field strength using calibrated equipment

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	Ensure that all heavy tools are securely fastened to the belt D-ring
B	Never lean back and rely on the belt alone to support your weight
C	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
D	All of these choices are correct

Figure G7-1