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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	All commercial stations; amateur radio stations are exempt
B	Only stations transmitting more than 500 watts PEP
C	All stations with a time-averaged transmission of more than one milliwatt
D	Only stations with antennas lower than one wavelength above the ground

2. - G0B10

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

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

3. - G1A10

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

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

4. - G1B07

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

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

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS input to the antenna
B	PEP input to the antenna
C	RMS output from the transmitter
D	PEP output from the transmitter

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	365 days
C	30 days
D	For as long as your current license is valid

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must relate to emergencies or disaster relief
B	They must be for other licensed amateurs
C	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
D	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single phase modulation
B	Frequency modulation
C	Single sideband
D	Double 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 contacts with other stations within the 48 contiguous states
B	Only SSTV contacts
C	Only digital contacts
D	Only contacts with stations not within the 48 contiguous states

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Report was read from an S meter rather than estimated
C	Chirpy or unstable signal
D	Key clicks

11. - G2D09

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

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

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide high-speed data services during an emergency or community event
B	To provide FM repeater coverage in remote areas
C	To provide real time propagation data by monitoring amateur radio transmissions worldwide
D	To provide DX spotting reports to aid contesters and DXers

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is disturbed
B	HF communication is improved
C	VHF/UHF ducting is improved
D	VHF/UHF ducting is disturbed

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They are refracted back to Earth
C	They are refracted and trapped in the ionosphere to circle Earth
D	They pass through the ionosphere

15. - G3C07

What makes HF scatter signals often sound distorted?

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

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	Accidental out-of-band operation can be prevented
C	It may be possible to reduce or eliminate interference from other signals
D	More stations can be accommodated within a given signal passband

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	Transmitter
D	Antenna and feed line

18. - G4C03

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

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

19. - 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 20 times less powerful
C	It is 20 times more powerful
D	It is 10 times less powerful

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the alternator or generator using heavy-gauge wire
B	To the battery using insulated heavy duty balanced transmission line
C	To the battery using heavy-gauge wire
D	To the alternator or generator using insulated heavy duty balanced transmission line

21. - G5A02

What is reactance?

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

22. - G5B02

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

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

23. - 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	576.9 nanofarads
C	3,583 picofarads
D	1,733 picofarads

24. - G6A05

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

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

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A nickel plated version of the PL-259
B	A low noise figure VHF connector
C	A small bayonet connector used for data circuits
D	A moisture-resistant RF connector useful to 10 GHz

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	180 degrees
B	360 degrees
C	90 degrees
D	270 degrees

27. - G7B05

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

Select	Answer
A	6
B	16
C	8
D	3

28. - G7C12

What is the frequency above which a low-pass filter’s output power is less than half the input power?

Select	Answer
A	Cutoff frequency
B	Rolloff frequency
C	Neper frequency
D	Notch frequency

29. - G8A09

What type of modulation is used by FT8?

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

30. - G8B02

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

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

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	Winlink, PACTOR II, and PACTOR III
B	WSPR, MFSK16, and EasyPAL
C	FT8, FT4, and FST4
D	DMR, D-STAR, and SystemFusion

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The frequency of the signal and the length of the line
C	The distance between the centers of the conductors and the length of the line
D	The distance between the centers of the conductors and the radius of the conductors

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	8 feet
C	33 feet
D	16 feet

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The number of directors versus the number of reflectors
B	The power radiated in the major lobe compared to that in the opposite direction
C	The ratio of forward gain to dipole gain
D	The relative position of the driven element with respect to the reflectors and directors

35. - G9D03

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

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