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

2. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut down the unit if it becomes too hot
B	To prevent unauthorized changes to the circuit that would void the manufacturer’s warranty
C	To ensure that dangerous voltages are removed if the cabinet is opened
D	To shut off the power supply if too much voltage is produced

3. - G1A02

On which of the following bands is phone operation prohibited?

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

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be coordinated with the National Beacon Organization
B	All these choices are correct
C	No more than one beacon station may transmit in the same band from the same station location
D	The frequency must be posted on the internet or published in a national periodical

5. - G1C04

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of all third-party traffic
B	If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna
C	You must keep a record of the date, time, frequency, power level, and stations worked
D	You must keep a record of the manufacturer of your equipment and the antenna used

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Only those of the FCC
B	Those of the remote station’s country and the FCC’s third-party regulations
C	Only those of the remote station’s country
D	Those of both the remote station’s country and 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 42 through 45
B	No part
C	Anywhere in the band
D	Channels 1 through 4

8. - G2A10

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

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

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Immediately cease all transmissions
B	Immediately decrease power to avoid interfering with the station in distress
C	Acknowledge the station in distress and determine what assistance may be needed
D	Inform your local emergency coordinator

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Matching the transmit frequency to the frequency of a received signal
B	Operating split to avoid interference on frequency
C	Matching the speed of the transmitting station
D	Sending without error

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Adam, Boy, Charles, David
B	Alpha, Bravo, Charlie, Delta
C	America, Boston, Canada, Denmark
D	Able, Baker, Charlie, Dog

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Send an email to the system control operator
B	Respond when the station broadcasts its SSID
C	Transmit a connect message on the station’s published frequency
D	Send QRL in Morse code

13. - G3A04

Which of the following are the least reliable bands for long-distance communications during periods of low solar activity?

Select	Answer
A	60 meters and 40 meters
B	15 meters, 12 meters, and 10 meters
C	30 meters and 20 meters
D	80 meters and 160 meters

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Minimum Usable Frequency during a 24-hour period
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency for communications between two points

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because it is the highest
B	Because it is the densest
C	Because of the Doppler effect
D	Because of temperature inversions

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	More stations can be accommodated within a given signal passband
B	It may be possible to reduce or eliminate interference from other signals
C	Accidental out-of-band operation can be prevented
D	Interference from impulse noise will be eliminated

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The local oscillator of the transmitter
B	An external RF oscillator
C	The transmitter balanced mixer output
D	The attenuated RF output of the transmitter

18. - G4C09

How can the effects of ground loops be minimized?

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

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	14.347 MHz to 14.647 MHz
B	14.3455 MHz to 14.3485 MHz
C	14.344 MHz to 14.347 MHz
D	14.347 MHz to 14.350 MHz

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Harmonic radiation may increase
B	Short antennas are more likely to cause distortion of transmitted signals
C	Operating bandwidth may be very limited
D	Q of the antenna will be very low

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Conductance
B	Reluctance
C	Reactance
D	Admittance

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.414
B	0.707
C	2.00
D	1.00

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

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Tight tolerance
B	High stability
C	High capacitance for given volume
D	Comparatively low cost

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	500 MHz
B	50 MHz
C	40 GHz
D	4 GHz

26. - G7A08

Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Fewer circuit components are required
B	Inherently more stable
C	Faster switching time makes higher output voltage possible
D	High-frequency operation allows the use of smaller components

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To keep the carrier on frequency
B	To eliminate self-oscillations
C	To cut off the final amplifier during standby periods
D	To limit the modulation index

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	RF amplifier
B	IF amplifier
C	Filter
D	Carrier oscillator

29. - G8A10

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

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

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	3 kHz
C	16 kHz
D	5 kHz

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	10.7 GHz
B	2.4 GHz
C	902 MHz
D	432 MHz

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	2:1
B	1:2
C	4:1
D	1:4

33. - G9B10

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

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

34. - G9C12

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

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

35. - G9D06

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

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