US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

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

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	Where the feed lines enter the building
B	On the antenna, opposite the feed point
C	In series with each ground lead
D	At the closest power pole ground electrode

3. - G1A02

On which of the following bands is phone operation prohibited?

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

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Transmissions to assist with learning the International Morse code
B	All these choices are correct
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	1500 watts PEP output
C	1200 watts PEP output
D	200 watts PEP output

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only on the Technician band segments until you have a receipt for the FCC application fee payment
C	On any General or Technician class band segment except 30 meters and 60 meters
D	Only the Technician band segments until your upgrade is posted in the FCC database

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	The third party is speaking in a language other than English
B	The third party’s amateur license has been revoked and not reinstated
C	All these choices are correct
D	The third party is not a US citizen

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only digital contacts
B	Only contacts with stations not within the 48 contiguous states
C	Only SSTV contacts
D	Only contacts with other stations within the 48 contiguous states

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	I have received and understood
B	We have worked before
C	Send slower
D	We have already confirmed the contact

11. - G2D01

What is the Volunteer Monitor Program?

Select	Answer
A	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
B	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the voice portion of the band
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the CW portion of the band

13. - G3A13

What does the A-index measure?

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

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	High levels of atmospheric noise or static
B	Poor propagation at any time of day
C	Heavy distortion on signals due to photon absorption
D	World-wide propagation during daylight hours

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Scatter propagation occurs only at night
B	Signals have a fluttering sound
C	Phone signals have high intelligibility
D	There are very large, sudden swings in signal strength

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	It may be possible to reduce or eliminate interference from other signals
C	More stations can be accommodated within a given signal passband
D	Accidental out-of-band operation can be prevented

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Received power that interferes with SWR readings
B	All these choices are correct
C	Generation of harmonics which interfere with frequency readings
D	Desensitization which can cause intermodulation products which interfere with impedance readings

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Clearly audible speech
C	Distorted speech
D	A steady hum whenever the transmitter is on the air

19. - G4D04

What does an S meter measure?

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

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To reduce radiation resistance
B	To electrically lengthen a physically short antenna
C	To lower the radiation angle
D	To increase the power handling capacity of a whip antenna

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Inductive reactance and capacitive reactance cancel
B	The circuit radiates all its energy in the form of radio waves
C	Current and voltage are equal
D	Resistance is cancelled

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	1060 watts
B	1500 watts
C	2120 watts
D	530 watts

23. - G5C08

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

Select	Answer
A	576.9 nanofarads
B	3,583 picofarads
C	10.750 nanofarads
D	1,733 picofarads

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

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

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The ratio of outer diameter to inner diameter
B	Its thickness
C	Its conductivity
D	The composition, or “mix,” of materials used

26. - G7A11

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

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Multiply the RF input power by the reciprocal of the RF output power
B	Add the RF input power to the DC output power
C	Divide the RF output power by the DC input power
D	Divide the DC input power by the DC output power

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Rolloff
B	Insertion loss
C	Notch depth
D	Ultimate rejection

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency conversion
B	Frequency transformation
C	Frequency convolution
D	Frequency modulation

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	MFSK16
B	WSPR
C	PSK31
D	SSB-SC

32. - G9A04

What causes reflected power at an antenna’s feed point?

Select	Answer
A	A difference between feed line impedance and antenna feed point impedance
B	Using more transmitter power than the antenna can handle
C	Feeding the antenna with unbalanced feed line
D	Operating an antenna at its resonant frequency

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	As high as possible above the ground
B	At the center of the antenna
C	On the surface or buried a few inches below the ground
D	Parallel to the antenna element

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Beamwidth increases
B	Front-to-back ratio decreases
C	Gain increases
D	Resonant frequency is lower

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To provide balanced feed point impedance
B	To enable multiband operation
C	To notch spurious frequencies
D	To prevent out-of-band operation

Figure G7-1