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	17 meters
B	30 meters
C	12 meters
D	160 meters

2. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	20 watts PEP output
B	200 watts PEP output
C	100 watts PEP output
D	10 watts PEP output

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
B	Effective radiated power cannot exceed 1500 watts
C	Power should be limited as necessary to avoid interference to another radio service on the frequency
D	Only the minimum power necessary to carry out the desired communications should be used

4. - G1D09

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

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

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Any country which is not a member of the International Amateur Radio Union (IARU)
B	Countries in ITU Region 1
C	Every foreign country, unless there is a third party agreement in effect with that country
D	Countries in ITU Region 2

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

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

7. - G2B07

Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	All of these choices are correct
B	Identify your station by transmitting your call sign at least 3 times
C	Follow the voluntary band plan for the operating mode you intend to use
D	Check to see if the channel is assigned to another station

8. - G2C07

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

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

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

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Transmit a connect message on the station's published frequency
B	Send QRL in Morse code
C	Send an email to the system control operator
D	Respond when the station broadcasts its SSID

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	Long term oscillations in the upper atmosphere
C	Cyclic variation in the Earth's radiation belts
D	The Sun's rotation on its axis

12. - G3B07

What does LUF stand for?

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

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

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 transceiver is set to different transmit and receive frequencies
C	The transmitter is emitting an SSB signal, as opposed to DSB operation
D	The radio is operating at half power

15. - G4B14

What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with a digital readout?

Select	Answer
A	When high precision is desired
B	When testing logic circuits
C	When adjusting tuned circuits
D	When measuring the frequency of an oscillator

16. - G4C09

How can a ground loop be avoided?

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

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.175 to 7.178 MHz
B	7.1765 to 7.1795 MHz
C	7.178 to 7.184 MHz
D	7.178 to 7.181 MHz

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The socket's wiring may be inadequate for the current drawn by the transceiver
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	Drawing more than 50 watts from this socket could cause the engine to overheat

19. - G5A03

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

Select	Answer
A	Reluctance
B	Admittance
C	Reactance
D	Conductance

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	353.5 watts
B	400 watts
C	1.4 watts
D	100 watts

21. - G5C02

What happens if you reverse the primary and secondary windings of a 4:1 voltage step down transformer?

Select	Answer
A	Additional resistance must be added in parallel with the secondary to prevent overload
B	The transformer no longer functions as it is a unidirectional device
C	Additional resistance must be added in series with the primary to prevent overload
D	The secondary voltage becomes 4 times the primary voltage

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

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

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	A moisture-resistant RF connector useful to 10 GHz
B	An audio connector used in surround-sound installations
C	A small bayonet connector used for data circuits
D	A threaded connector used for hydraulic systems

24. - G7A02

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

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

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is high only when both inputs are high
B	Output is high when either or both inputs are low
C	Output is low only when both inputs are high
D	Output is low when either or both inputs are high

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. - 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	Radian inversion
C	Phase convolution
D	Phase modulation

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	5 kHz
C	3 kHz
D	16 kHz

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Header
B	Directory
C	Footer
D	Preamble

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	100 ohms
B	75 ohms
C	50 ohms
D	300 ohms

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is too high, the pattern becomes unpredictable
C	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB higher
B	3 dB lower
C	2.54 dB higher
D	About the same

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They present low impedance on all design frequencies
B	They must be used with an antenna tuner
C	They have poor harmonic rejection
D	They must be fed with open wire line

34. - G0A09

What type of instrument can be used to accurately measure an RF field?

Select	Answer
A	An oscilloscope with a high-stability crystal marker generator
B	An SWR meter with a peak-reading function
C	A receiver with an S meter
D	A calibrated field strength meter with a calibrated antenna

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