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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
B	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
C	Contact the FCC for permission to transmit
D	Use an FCC-approved band-pass filter

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Parallel to the water supply line
B	As close to the station equipment as possible
C	Next to the closest power pole
D	Outside the building

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	The entire band
B	28.000 MHz to 28.025 MHz only
C	28.025 MHz to 28.300 MHz only
D	28.000 MHz to 28.300 MHz only

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	They are limited to those expressly listed in Part 97 of the FCC rules
B	Only “Q” signals are permitted
C	They may be used if they do not obscure the meaning of a message
D	They are not permitted

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of all third-party traffic
B	You must keep a record of the date, time, frequency, power level, and stations worked
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna

6. - G1D05

When operating a US station by remote control from outside the country, what license is required of the control operator?

Select	Answer
A	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US
B	A license from the foreign country and a special remote station permit from the FCC
C	A US operator/primary station license
D	Only an appropriate US operator/primary license and a special remote station permit from the FCC

7. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When messages are not encrypted
B	Under no circumstances
C	When under automatic control
D	When messages are encrypted

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Attenuator level
B	RF clipping level
C	Antenna inductance or capacitance
D	Transmit audio or microphone gain

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Listen for 2 minutes before calling CQ
B	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
C	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
D	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	I am troubled by static
B	Zero beat my signal
C	Send more slowly
D	Stop sending

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	All these choices are correct
B	Send a QSL card to the stations worked, or QSL via Logbook of The World
C	Submit a log to the contest sponsor
D	Identify your station according to normal FCC regulations

12. - G2E15

Which of the following is a common location for FT8?

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

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Improve HF long path propagation
B	Increases signal strength for HF signals passing through the polar regions
C	Creates auroras that can reflect VHF signals
D	Reduce long delayed echoes

14. - G3B08

What does MUF stand for?

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

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Highest plate voltage while minimizing grid current
B	Minimum plate current without exceeding maximum allowable grid current
C	Minimum SWR on the antenna
D	Desired power output without exceeding maximum allowable plate current

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The local oscillator of the transmitter
B	An external RF oscillator
C	The attenuated RF output of the transmitter
D	The transmitter balanced mixer output

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

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

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It increases average power
B	It reduces intermodulation distortion
C	It reduces harmonic distortion
D	It increases peak power

20. - G4E01

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

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

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Conductance
B	Reluctance
C	Admittance
D	Susceptance

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It is the sum of the reciprocal of each individual voltage drop
B	It decreases as more parallel branches are added to the circuit
C	It equals the sum of the currents through each branch
D	It equals the average of the branch currents

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	A capacitor in series
B	An inductor in series
C	A capacitor in parallel
D	An inductor in parallel

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

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

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for power supply regulation
C	Better suited for RF amplification
D	High power handling capability

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave
B	Half-wave
C	Full-wave bridge
D	Synchronous

27. - G7B06

What is a shift register?

Select	Answer
A	A clocked array of circuits that passes data in steps along the array
B	A digital mixer
C	An array of operational amplifiers used for tri-state arithmetic operations
D	An analog mixer

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Variable output frequency with the stability of a crystal oscillator
B	Extremely narrow tuning range
C	Relatively high-power output
D	Pure sine wave output

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Amplitude compressed AM
B	Vestigial sideband
C	8-bit direct sequence spread spectrum
D	8-tone frequency shift keying

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It minimizes power consumption in the receiver
B	It is required by FCC rules
C	It improves impedance matching of the antenna
D	It results in the best signal-to-noise ratio

31. - G8C11

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

Select	Answer
A	Dot and dash
B	Mark and space
C	High and low
D	On and off

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The antenna feed point must be at DC ground potential
C	The feed line must be an odd number of electrical quarter wavelengths long
D	The feed line must be an even number of physical half wavelengths long

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower radiation resistance
B	Lower ground losses
C	Shorter radials
D	Lower feed point impedance

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The point of maximum current in a radiating antenna element
B	The maximum voltage standing wave point on a radiating element
C	The magnitude of the maximum vertical angle of radiation
D	The direction of maximum radiated field strength from the antenna

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	Opposite the feed point
B	Broadside to the plane of the halo
C	On the same side as the feed point
D	Omnidirectional in the plane of the halo