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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 3
B	All three regions
C	Region 1
D	Region 2

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Follow generally accepted band plans agreed to by the Amateur Radio community
B	Monitor the frequency before transmitting
C	All of these choices are correct
D	Insure that the frequency and mode selected are within your license class privileges

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

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. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
B	Any message, as long as the amateur operator is not paid
C	Only messages for other licensed amateurs
D	Any messages, as long as the text of the message is recorded in the station log

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is more efficient than upper sideband at these frequencies
B	Lower sideband is the only sideband legal on these frequency bands
C	Current amateur practice is to use lower sideband on these frequency bands
D	Because it is fully compatible with an AM detector

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
B	An FCC rule that allows only digital contacts in that portion of the band
C	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
D	A portion of the band that has been voluntarily set aside for digital contacts only

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	Send slower
B	I acknowledge receipt
C	We have already confirmed by card
D	We have worked before

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

10. - G2E10

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

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The long term stability of the Earth's geomagnetic field
B	The relative position of sunspots on the surface of the Sun
C	The amount of polarization of the Sun's electric field
D	The solar radio flux at Boulder, Colorado

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency during a 24 hour period
B	The Minimum Usable Frequency for communications between two points
C	The Maximum Usable Frequency for communications between two points
D	The Maximum 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. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Excessive drive power
B	Low input SWR
C	Shorting the input signal to ground
D	Insufficient drive power

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of carrier and undesired sideband for SSB
B	Linearity
C	Percentage of frequency modulation
D	Percentage of carrier phase shift

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	On-and-off humming or clicking
B	A chirpy CW signal
C	Severely distorted audio
D	A CW signal at a nearly pure audio frequency

17. - G4D04

What does an S meter measure?

Select	Answer
A	Received signal strength
B	Conductance
C	Transmitter power output
D	Impedance

18. - G4E10

What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	The diode limits the current flowing from the panel to a safe value
B	The diode serves to regulate the charging voltage to prevent overcharge
C	The diode greatly increases the efficiency during times of high illumination
D	The diode prevents self-discharge of the battery though the panel during times of low or no illumination

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	Insert an LC network between the two circuits
C	Insert a circulator between the two circuits
D	Reduce the power output of the first circuit

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	400 watts
B	1.4 watts
C	353.5 watts
D	100 watts

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	576.9 nanofarads
C	1733 picofarads
D	3583 picofarads

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's internal capacitance would detune the circuit
B	The resistor could overheat
C	The resistor's tolerance value would not be adequate for such a circuit
D	The resistor's inductance could make circuit performance unpredictable

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	Octal
B	PL-259
C	RJ-11
D	DB-25

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 4
B	Symbol 2
C	Symbol 5
D	Symbol 1

25. - G7B14

Which of the following describes a linear amplifier?

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

26. - G7C11

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

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

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By changing an oscillator's frequency directly with a digital control signal
B	By using a transceiver's computer data interface protocol to change frequencies
C	By keying an FM transmitter with a sub-audible tone
D	By reconfiguring the CW keying input to act as a tone generator

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Lower symbol rates require wider bandwidth
B	Higher symbol rates require wider bandwidth
C	Symbol rate and bandwidth are not related
D	Bandwidth is always half the symbol rate

29. - G8C05

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

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

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	131 feet
B	42 feet
C	263 feet
D	84 feet

32. - G9C13

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

Select	Answer
A	1 wavelength
B	3/4 wavelength
C	1/2 wavelength
D	1/4 wavelength

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	As close to 1/2 wavelength as possible
B	As close to one wavelength as possible
C	Between 1/10 and 1/4 wavelength
D	Height is not critical as long as it is significantly more than 1/2 wavelength

34. - G0A09

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

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

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	Solder has too high a dielectric constant to provide adequate lightning protection
C	The resistance of solder is too high
D	Solder flux will prevent a low conductivity connection

Figure G7-1