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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
B	All these choices are correct
C	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
D	Post a copy of FCC Part 97.13 in the station

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	All wires
B	Only the hot wires
C	Only the neutral wire
D	Only the ground wire

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. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	All these choices are correct
B	Unidentified test transmissions of less than 10 seconds in duration
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	Transmissions to assist with learning the International Morse code

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	19.6 kilobaud
B	56 kilobaud
C	1200 baud
D	300 baud

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	Only an appropriate US operator/primary license and a special remote station permit from the FCC
C	A US operator/primary station license
D	A license from the foreign country and a special remote station permit from the FCC

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 1 through 4
B	Anywhere in the band
C	No part
D	Channels 42 through 45

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It allows “hands free” operation
B	It occupies less bandwidth
C	The received signal is more natural sounding
D	It provides more power output

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 contacts with stations not within the 48 contiguous states
C	Only digital contacts
D	Only SSTV contacts

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am quitting for the day
B	There is interference on the frequency
C	You are sending too fast
D	I am ready to receive

11. - G2D01

What is the Volunteer Monitor Program?

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

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A02

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

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

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	All these choices are correct
C	Time of day and season
D	Solar radiation and ionospheric disturbances

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The frequency at which the signal-to-noise ratio approaches unity
B	The highest frequency which is refracted back to Earth
C	The frequency at which the signal-to-noise ratio is 6 dB
D	The lowest frequency which is refracted back to Earth

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce the transmitter power when driving a linear amplifier
B	To reduce power consumption when operating from batteries
C	To reduce excessive audio level on strong signals
D	To prevent receiver overload from strong incoming signals

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Desensitization which can cause intermodulation products which interfere with impedance readings
B	All these choices are correct
C	Received power that interferes with SWR readings
D	Generation of harmonics which interfere with frequency readings

18. - G4C03

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

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

19. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Carrier suppression
C	Transmitter power output
D	Received signal strength

20. - G4E05

Which of the following most limits an HF mobile installation?

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

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All these choices are correct
B	A Pi-network
C	A transformer
D	A length of transmission line

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	60 watts
B	24 watts
C	2.4 watts
D	6 watts

23. - G5C10

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

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

24. - G6A09

Which of the following describes MOSFET construction?

Select	Answer
A	The gate is formed by a back-biased junction
B	The source is separated from the drain by a thin insulating layer
C	The source is formed by depositing metal on silicon
D	The gate is separated from the channel by a thin insulating layer

25. - G6B02

What is meant by the term MMIC?

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

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It eliminates ground loop current
B	It acts as a fuse for excess voltage
C	It discharges the filter capacitors when power is removed
D	It removes shock hazards from the induction coils

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier used as a frequency multiplier
B	An amplifier in which the output preserves the input waveform
C	A Class C high efficiency amplifier
D	Any RF power amplifier used in conjunction with an amateur transceiver

28. - G7C13

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

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

29. - G8A10

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

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

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Mixer
B	Balanced converter
C	Multiplier
D	Reactance modulator

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Header
B	Trailer
C	Preamble
D	Directory

32. - G9A11

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

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

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Isotropic
B	Hemispherical
C	Omnidirectional in azimuth
D	Bi-directional in azimuth

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	All these choices are correct
B	It does not require any inductors or capacitors
C	It is useful for matching multiband antennas
D	It does not require the driven element to be insulated from the boom

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Polarization diversity
C	Harmonic suppression
D	Wide bandwidth