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

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	Current flowing from one or more of the hot wires directly to ground
B	Current flowing from one or more of the hot wires to the neutral wire
C	Overvoltage on the hot wires
D	All these choices are correct

3. - G1A10

What portion of the 10-meter band is available for repeater use?

Select	Answer
A	The entire band
B	The portion between 28.3 MHz and 28.5 MHz
C	The portion above 29.5 MHz
D	The portion between 28.1 MHz and 28.2 MHz

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
B	Only when the foreign country has a formal third-party agreement filed with the FCC
C	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Type-certify equipment to FCC standards
B	Obtain an experimental license from the FCC
C	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
D	Publicly document the technical characteristics of the protocol

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

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

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

8. - G2A01

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

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

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	QSOs in progress have priority
B	Nets have priority
C	Except during emergencies, no amateur station has priority access to any frequency
D	Contest operations should yield to non-contest use of frequencies

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you busy?” or “Is this frequency in use?”
B	“Will you keep the frequency clear?”
C	“Are you listening only for a specific station?”
D	“Are you operating full break-in?” or “Can you operate full break-in?”

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare vertical and horizontal signal strengths on the input frequency
B	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
C	All these choices are correct
D	Compare signal strengths between the input and output of the repeater

12. - G2E01

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

Select	Answer
A	USB
B	CW
C	LSB
D	DSB

13. - G3A02

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

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

14. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two specific points
B	The Lowest Usable Frequency during a 24-hour period
C	Lowest Usable Frequency during the past 60 minutes
D	Lowest Usable Frequency for communications to any point outside a 100-mile radius

15. - G3C07

What makes HF scatter signals often sound distorted?

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

16. - G4A10

What is the function of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	To allow time for switching the antenna from the receiver to the transmitter
C	Computer interface for PSK and RTTY operation
D	Automatic generation of dots and dashes for CW operation

17. - G4B10

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

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

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	A soldered joint will likely be destroyed by the heat of a lightning strike
B	All these choices are correct
C	Solder flux will prevent a low conductivity connection
D	Solder has too high a dielectric constant to provide adequate lightning protection

19. - G4D02

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

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

20. - G4E01

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

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

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	Z
B	X
C	Y
D	B

22. - G5B14

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

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

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	0.30 henries
B	3.3 henries
C	3.3 millihenries
D	30 millihenries

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	High voltage
B	Long life
C	High discharge current
D	Rapid recharge

25. - G6B11

What is an SMA connector?

Select	Answer
A	A connector designed for serial multiple access signals
B	A type-S to type-M adaptor
C	A type of push-on connector intended for high-voltage applications
D	A small threaded connector suitable for signals up to several GHz

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	More current can be drawn from the half-wave rectifier
B	The ripple frequency is twice that of a full-wave rectifier
C	Only one diode is required
D	The output voltage is two times the peak input voltage

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The number of stages in the counter
C	The inductance and capacitance in the tank circuit
D	The time delay of the lag circuit

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in test gear to detect spurious mixing products
B	Used in transmitter to perform frequency multiplication
C	Used in an FM receiver to filter out unwanted sidebands
D	Used in a single sideband receiver to extract the modulated signal

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

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

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	Having more nodes increases signal strengths
B	Links between two nodes in a network may have different frequencies and bandwidths
C	More nodes reduce overall microwave out of band interference
D	If one node fails, a packet may still reach its target station via an alternate node

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss reduces SWR measured at the input to the line
B	Transmission line loss does not affect the SWR measurement
C	Higher loss increases the accuracy of SWR measured at the input to the line
D	Higher loss increases SWR measured at the input to the line

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	42 feet
B	263 feet
C	132 feet
D	84 feet

34. - G9C08

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

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

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They present low impedance on all design frequencies
C	They must be used with an antenna tuner
D	They must be fed with open wire line