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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on FCC OET Bulletin 65
B	By measurement of field strength using calibrated equipment
C	By calculation based on computer modeling
D	All these choices are correct

2. - G0B11

Which of the following is required for lightning protection ground rods?

Select	Answer
A	Lightning grounds must be connected to all ungrounded wiring
B	They must be bonded to all buried water and gas lines
C	They must be bonded together with all other grounds
D	Bends in ground wires must be made as close as possible to a right angle

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	28.000 MHz to 28.300 MHz only
B	28.000 MHz to 28.025 MHz only
C	28.025 MHz to 28.300 MHz only
D	The entire band

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	The frequency must be posted on the internet or published in a national periodical
D	No more than one beacon station may transmit in the same band from the same station location

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

6. - G1D09

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

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

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Under any circumstances in which third party messages are permitted by FCC rules
B	Only when the message is intended for licensed radio amateurs
C	Under no circumstances except for emergencies
D	Only when the message is intended for third parties in areas where licensing is controlled by the FCC

8. - G2A01

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

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

9. - G2B10

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

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

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The fastest speed at which you are comfortable copying, but no slower than the CQ
B	At the standard calling speed of 5 wpm
C	The fastest speed at which you are comfortable copying, but no faster than the CQ
D	At the standard calling speed of 10 wpm

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

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Anywhere in the CW portion of the band
B	Anywhere in the voice portion of the band
C	Approximately 14.110 MHz to 14.113 MHz
D	Approximately 14.074 MHz to 14.077 MHz

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At the summer solstice
C	Only at the maximum point
D	At any point

14. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They are attenuated before reaching the destination
B	They are refracted back to Earth
C	They pass through the ionosphere
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

Select	Answer
A	The D region
B	The F2 region
C	The E region
D	The F1 region

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	Automatic generation of dots and dashes for CW operation
D	Computer interface for PSK and RTTY operation

17. - G4B05

Why do voltmeters have high input impedance?

Select	Answer
A	It allows for higher voltages to be safely measured
B	It decreases the loading on circuits being measured
C	It improves the resolution of the readings
D	It improves the frequency response

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Lack of rectification of the transmitter’s signal in power conductors
B	Using a balun to feed an unbalanced antenna
C	Arcing at a poor electrical connection
D	Not using a balun or line isolator to feed balanced antennas

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 10 times less powerful
D	It is 20 times more powerful

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	Q of the antenna will be very low
D	Operating bandwidth may be very limited

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Resistance is cancelled
B	Current and voltage are equal
C	Inductive reactance and capacitive reactance cancel
D	The circuit radiates all its energy in the form of radio waves

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	400 watts
B	200 watts
C	0.5 watts
D	3200 watts

23. - G5C10

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

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

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

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

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for RF amplification
C	High power handling capability
D	Better suited for power supply regulation

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 output voltage is two times the peak input voltage
C	Only one diode is required
D	The ripple frequency is twice that of a full-wave rectifier

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

Select	Answer
A	More than 50% but less than 100%
B	50%
C	Less than 50%
D	100%

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	Mixing products are greatly reduced
C	The DSP filter is much more effective at VHF frequencies
D	A wide range of filter bandwidths and shapes can be created

29. - G8A13

What is a link budget?

Select	Answer
A	The financial costs associated with operating a radio link
B	The sum of antenna gains minus system losses
C	The sum of transmit power and antenna gains minus system losses as seen at the receiver
D	The difference between transmit power and receiver sensitivity

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	416.7 Hz
B	101.75 Hz
C	60 kHz
D	5 kHz

31. - G8C01

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

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

32. - G9A01

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

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

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	Antenna height has no effect on the pattern
B	If the antenna is too high, the pattern becomes unpredictable
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1/2 wavelength
B	1/4 wavelength
C	3/4 wavelength
D	1 wavelength

35. - G9D06

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

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