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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	Take action to prevent human exposure to the excessive RF fields
B	All these choices are correct
C	File an Environmental Impact Statement (EIS-97) with the FCC
D	Secure written permission from your neighbors to operate above the controlled MPE limits

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	High voltages can cause lead-tin solder to disintegrate suddenly
B	Lead can contaminate food if hands are not washed carefully after handling the solder
C	RF energy can convert the lead into a poisonous gas
D	Tin in the solder can “cold flow,” causing shorts in the circuit

3. - G1A02

On which of the following bands is phone operation prohibited?

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

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Automatic identification of repeaters
B	All these choices are correct
C	Transmission of bulletins of general interest to amateur radio licensees
D	Observation of propagation and reception

5. - G1C06

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

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

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
B	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
C	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

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

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

Select	Answer
A	Upper sideband
B	Double sideband
C	Lower sideband
D	Suppressed 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 other stations within the 48 contiguous states
C	Only contacts with stations not within the 48 contiguous states
D	Only SSTV contacts

10. - G2C09

What does the Q signal “QSL” mean?

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

11. - G2D01

What is the Volunteer Monitor Program?

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

12. - G2E01

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

Select	Answer
A	LSB
B	CW
C	DSB
D	USB

13. - G3A02

What effect does a sudden ionospheric disturbance have on the daytime ionospheric propagation?

Select	Answer
A	None, because only areas on the night side of the Earth are affected
B	It disrupts communications via satellite more than direct communications
C	It disrupts signals on lower frequencies more than those on higher frequencies
D	It enhances propagation on all HF frequencies

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	Use a network of automated receiving stations on the internet to see where your transmissions are being received
B	Send a series of dots and listen for echoes
C	All these choices are correct
D	Check the A-index

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region absorbs signals at these frequencies during daylight hours
B	The D region absorbs signals at these frequencies during daylight hours
C	The E region is unstable during daylight hours
D	The F region is unstable during daylight hours

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the SWR in the feed line to the antenna
B	Reduce the power dissipation in the feedline to the antenna
C	Increase power transfer from the transmitter to the feed line
D	All these choices are correct

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All these choices are correct
B	Receiver
C	Antenna and feed line
D	Transmitter

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Avoid using lock washers and star washers when making ground connections
B	Bond equipment enclosures together
C	Connect all ground conductors in series
D	Connect the AC neutral conductor to the ground wire

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 MHz to 7.184 MHz
B	7.178 MHz to 7.181 MHz
C	7.175 MHz to 7.178 MHz
D	7.1765 MHz to 7.1795 MHz

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Shunt
C	Bypass
D	Series-parallel

21. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of alternating current caused by capacitance or inductance
B	Reinforcement of the flow of direct current caused by resistance
C	Opposition to the flow of direct current caused by resistance
D	Reinforcement of the flow of alternating current caused by capacitance or inductance

22. - G5B14

What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

Select	Answer
A	625 watts
B	8.75 watts
C	2500 watts
D	5000 watts

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

Select	Answer
A	Additional resistance must be added in series with the primary to prevent overload
B	The input voltage is multiplied by 4
C	The input voltage is divided by 4
D	Additional resistance must be added in parallel with the secondary to prevent overload

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

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

25. - G6B03

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

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

26. - G7A09

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

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

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	8
B	6
C	3
D	16

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	90 degrees
B	Zero
C	45 degrees
D	180 degrees

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	The transmitter’s carrier is properly suppressed
B	Signal distortion caused by insufficient collector current
C	The transmitter’s automatic level control (ALC) is properly adjusted
D	Signal distortion caused by excessive drive or speech levels

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	RF input
B	Image frequency
C	Local oscillator
D	Beat frequency oscillator

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Insufficient modulation
B	Overmodulation
C	Long path propagation
D	Backscatter propagation

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation increases
B	Attenuation decreases
C	Attenuation follows Marconi’s Law of Attenuation
D	Attenuation is independent of frequency

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

Select	Answer
A	It produces only vertically polarized radiation
B	It must be longer than 1 wavelength
C	It is more effective on the lower HF bands than on the higher bands
D	Station equipment may carry significant RF current

34. - G9C08

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

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

35. - G9D04

What is the primary function of antenna traps?

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

Figure G7-1