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. - G0B10

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

Select	Answer
A	RF energy can convert the lead into a poisonous gas
B	High voltages can cause lead-tin solder to disintegrate suddenly
C	Lead can contaminate food if hands are not washed carefully after handling the solder
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. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Unidentified transmissions of less than 10 seconds duration for test purposes only
B	Encrypted messages, if not intended to facilitate a criminal act
C	Automatic retransmission of other amateur signals by any amateur station
D	Occasional retransmission of weather and propagation forecast information from US government stations

5. - G1C07

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

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

6. - G1D01

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

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	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
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	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

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 be for other licensed amateurs
B	They must relate to emergencies or disaster relief
C	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
D	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

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Less bandwidth used and greater power efficiency
B	Ease of tuning on receive and immunity to impulse noise
C	Very high-fidelity voice modulation
D	Less subject to interference from atmospheric static crashes

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Have a backup frequency in case of interference or poor conditions
B	All these choices are correct
C	Transmit the full net roster at the beginning of every session
D	Always use multiple sets of phonetics during check-in

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Transmitting stations can receive between code characters and elements
B	An operator must activate a manual send/receive switch before and after every transmission
C	Breaking stations send the Morse code prosign “BK”
D	Automatic keyers, instead of hand keys, are used to send Morse code

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Toward the rising sun
B	Toward the north
C	180 degrees from the station’s short-path heading
D	Along the gray line

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Gateway
B	Terminal Node Controller
C	Printer/Server
D	RJ-45

13. - G3A13

What does the A-index measure?

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

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	World-wide propagation during daylight hours
C	Poor propagation at any time of day
D	Heavy distortion on signals due to photon absorption

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

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By temporarily increasing received bandwidth
B	By clipping noise peaks
C	By redirecting noise pulses into a filter capacitor
D	By reducing receiver gain during a noise pulse

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Percentage of carrier phase shift
B	Linearity
C	Percentage of frequency modulation
D	Percentage of suppression of the carrier and undesired sideband for SSB

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	The ground wire has high impedance on that frequency
B	Insulated wire has been used for the ground wire
C	Flat braid rather than round wire has been used for the ground wire
D	The ground rod is resonant

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 MHz to 14.347 MHz
B	14.347 MHz to 14.350 MHz
C	14.3455 MHz to 14.3485 MHz
D	14.347 MHz to 14.647 MHz

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	Efficiency of the electrically short antenna
C	FCC rules limiting mobile output power on the 75-meter band
D	“Picket fencing”

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance decreases

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	346 volts
B	173 volts
C	692 volts
D	245 volts

23. - G5C10

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

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

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To increase the control grid resistance
B	To decrease plate resistance
C	To reduce grid-to-plate capacitance
D	To increase efficiency

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Multi-Mode Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Metal Monolayer Integrated Circuit

26. - G7A05

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

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

27. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C13

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

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

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Frequency modulation
B	Amplitude modulation
C	Phase modulation
D	Power modulation

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	2F1-F2
B	5F1-3F2
C	3F1-F2
D	All these choices are correct

31. - G8C11

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

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

32. - G9A05

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

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

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

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBi is 2.15 dB higher
B	Gain in dBd is 1.25 dBd higher
C	Gain in dBd is 1.25 dBd lower
D	Gain in dBi is 2.15 dB lower

35. - G9D04

What is the primary function of antenna traps?

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