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. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.020 MHz
B	28.550 MHz
C	All of these choices are correct
D	28.350 MHz

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The Control Operator
B	The ITU
C	The FCC
D	The IEEE

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1500 watts PEP output
B	1000 watts PEP output
C	2000 watts PEP output
D	100 watts PEP output

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Technician only
B	General only
C	Extra, General and Technician
D	General and Technician

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
B	Under no circumstances
C	Only during an FCC declared general state of communications emergency
D	Only if the 10-meter repeater control operator holds at least a General Class license

6. - G2A04

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

Select	Answer
A	Upper sideband
B	Vestigial sideband
C	Double sideband
D	Lower sideband

7. - G2B08

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

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

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Listening for novice stations
B	Listening only for a specific station or stations
C	Closing station now
D	Operating full break-in

9. - G2D09

What information is traditionally contained in a station log?

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

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	USB
B	DSB
C	CW
D	LSB

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	All of these choices are correct.
B	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
C	A zero sunspot number indicate radio propagation is not possible on any band
D	Lower sunspot numbers generally indicate greater probability of sporadic E propagation

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Check the strength of TV signals from Western Europe
C	Listen for signals from an international beacon in the frequency range you plan to use
D	Check the strength of signals in the MF AM broadcast band

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The D layer
B	The E layer
C	The F2 layer
D	The F1 layer

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	The VOX circuit does not un-key the transmitter
B	Frequent connection timeouts
C	The transmitter signal is distorted
D	All of these choices are correct

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	RF interference
C	Standing wave ratio
D	Antenna front-to-back ratio

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	The ground rod is resonant
D	Flat braid rather than round wire has been used for the ground wire

17. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 10 times less powerful
C	It is 20 times more powerful
D	It is 20 times less powerful

18. - G4E11

Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

Select	Answer
A	All of these choices are correct
B	A large energy storage system is needed to supply power when the wind is not blowing
C	The conversion efficiency from mechanical energy to electrical energy is less than 2 percent
D	The voltage and current ratings of such systems are not compatible with amateur equipment

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Admittance
B	Conductance
C	Reluctance
D	Reactance

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	1060 watts
C	530 watts
D	2120 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	1733 picofarads
C	576.9 nanofarads
D	3583 picofarads

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	8.5 volts
B	12 volts
C	6 volts
D	10.5 volts

23. - G6B12

Which of the following connectors would be a good choice for a serial data port?

Select	Answer
A	Type SMA
B	DE-9
C	PL-259
D	Type N

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	High frequency operation allows the use of smaller components
B	All of these choices are correct
C	Fewer circuit components are required
D	Faster switching time makes higher output voltage possible

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	Low distortion
B	Low standby power
C	High Efficiency
D	No need for bias

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Variable frequency with the stability of a crystal oscillator
B	Relatively high power output
C	Relatively low power consumption
D	Wide tuning range and no need for band switching

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Image response
B	Mixer interference
C	Quadrature noise
D	Intermediate interference

29. - G8C11

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 100 feet
C	Ohms per 100 feet
D	Decibels per 1000 feet

31. - G9B05

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

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

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

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Directional transmitting for low HF bands
B	Portable direction finding at lower HF frequencies
C	Directional receiving for low HF bands
D	Portable direction finding at higher HF frequencies

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The average amount of power developed by the transmitter over a specific 24 hour period
B	The total time of the exposure
C	The total RF exposure averaged over a certain time
D	The average time it takes RF radiation to have any long-term effect on the body

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	All of these choices are correct
B	Make sure all circuits that supply power to the tower are locked out and tagged
C	Unground the base of the tower
D	Notify the electric company that a person will be working on the tower