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. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14405 kHz
B	14005 kHz
C	14305 kHz
D	14105 kHz

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	200 feet
B	50 feet
C	100 feet
D	300 feet

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Possession of a properly obtained telegraphy license
B	Receipt of a CSCE for General Class
C	An FCC General Class or higher license and VEC accreditation
D	Notification to the FCC that you want to give an examination

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	The control operator of the interrogating station must hold an Extra Class license
C	No third party traffic maybe be transmitted
D	The station initiating the contact must be under local or remote control

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband and the carrier are transmitted; the other sideband is suppressed
B	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands
C	Only one sideband is transmitted; the other sideband and carrier are suppressed
D	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands

7. - G2B07

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

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

8. - G2C08

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

Select	Answer
A	KN
B	BK
C	SK
D	AR

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Date and time of contact
B	Band and/or frequency of the contact
C	All of these choices are correct
D	Call sign of station contacted and the signal report given

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 an email to the system control operator
C	Respond when the station broadcasts its SSID
D	Send QRL in Morse code

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At any point in the solar cycle
B	Only at the maximum point of the solar cycle
C	Only at the minimum point of the solar cycle
D	At the summer solstice

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	12,000 miles
B	1,200 miles
C	2,500 miles
D	180 miles

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different radio wave paths
B	The E-region is not present
C	The ionospheric layer involved is unstable
D	Ground waves are absorbing much of the signal

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce signal overload due to strong incoming signals
B	To slow down received CW signals for better copy
C	To reduce power consumption when operating from batteries
D	To reduce the transmitter power when driving a linear amplifier

15. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	An antenna noise bridge
B	A Q meter
C	A field strength meter
D	A multimeter

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	A wide range of filter bandwidths and shapes can be created
C	Mixing products are greatly reduced
D	Fewer digital components are required

17. - G4D06

Where is an S meter found?

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

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using heavy gauge wire
B	To the battery using resistor wire
C	To the battery using heavy gauge wire
D	To the alternator or generator using resistor wire

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	The electrical load is shorted
B	The source delivers minimum power to the load
C	No current can flow through the circuit
D	The source can deliver maximum power to the load

20. - G5B10

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

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

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

Select	Answer
A	0.30 microfarads
B	300 microfarads
C	33.3 microfarads
D	0.33 microfarads

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Longer switching times
B	Lower inductance
C	Lower capacitance
D	Higher breakdown voltage

23. - G6B05

What is meant when memory is characterized as non-volatile?

Select	Answer
A	The stored information is maintained even if power is removed
B	It is resistant to high temperatures
C	The stored information cannot be changed once written
D	It is resistant to radiation damage

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 11
C	Symbol 1
D	Symbol 2

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	All of these choices are correct
B	AM
C	CW
D	SSB

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	Filter
B	IF amplifier
C	RF amplifier
D	Carrier oscillator

27. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	The waveform created by connecting the peak values of the modulated signal
C	The carrier frequency that contains the signal
D	Spurious signals that envelop nearby frequencies

28. - G8B03

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

Select	Answer
A	Cancellation
B	Phase inverting
C	Synthesizing
D	Heterodyning

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	Mark and Space
B	High and Low
C	Dot and Dash
D	On and Off

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:2
B	1:4
C	2:1
D	4:1

31. - G9B01

What is one disadvantage of a directly fed random-wire HF antenna?

Select	Answer
A	It produces only vertically polarized radiation
B	It is more effective on the lower HF bands than on the higher bands
C	You may experience RF burns when touching metal objects in your station
D	It must be longer than 1 wavelength

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It is useful for matching multiband antennas
B	All of these choices are correct
C	It does not require any inductors or capacitors
D	It does not require that the elements be insulated from the boom

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in azimuth
B	It allows simultaneous vertical and horizontal polarization
C	It narrows the main lobe in elevation
D	It allows quick selection of vertical or horizontal polarization

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	A lower transmitter duty cycle permits greater short-term exposure levels
B	High duty cycle transmitters are exempt from RF exposure requirements
C	A higher transmitter duty cycle permits greater short-term exposure levels
D	Low duty cycle transmitters are exempt from RF exposure evaluation requirements

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	All wires
B	Only the two wires carrying voltage
C	Only the neutral wire
D	Only the ground wire

Figure G7-1