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	Use an FCC-approved band-pass filter
B	Contact the FCC for permission to transmit
C	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Make sure all circuits that supply power to the tower are locked out and tagged
B	Notify the electric company that a person will be working on the tower
C	Unground the base of the tower
D	All these choices are correct

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
B	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations may use the band only during emergencies
D	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band

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 not permitted
C	Only “Q” signals are permitted
D	They are limited to those expressly listed in Part 97 of the FCC rules

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	2000 watts PEP output
C	100 watts PEP output
D	1500 watts PEP output

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	A US operator/primary station license
B	Only an appropriate US operator/primary license and a special remote station permit from the FCC
C	A license from the foreign country and a special remote station permit from the FCC
D	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When a station is transmitting spread spectrum emissions
B	When using a band where the Amateur Service is secondary
C	When operating within one mile of an FCC Monitoring Station
D	All these choices are correct

8. - G2A08

What is the recommended way to break into a phone contact?

Select	Answer
A	Say “QRZ” several times, followed by your call sign
B	Say “Breaker Breaker”
C	Say your call sign once
D	Say “CQ” followed by the call sign of either station

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	Inform your local emergency coordinator
C	Acknowledge the station in distress and determine what assistance may be needed
D	Immediately decrease power to avoid interfering with the station in distress

10. - G2C11

What does the Q signal “QRV” mean?

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

11. - G2D06

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

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

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	SSB
B	DSB
C	LSB
D	USB

13. - G3A12

What does the K-index measure?

Select	Answer
A	The short-term stability of the Sun’s magnetic field
B	The short-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. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two specific points
B	The Lowest Usable Frequency during a 24-hour period
C	Lowest Usable Frequency during the past 60 minutes
D	Lowest Usable Frequency for communications to any point outside a 100-mile radius

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Energy is scattered into the skip zone through several different paths
B	The ionospheric region involved is unstable
C	Ground waves are absorbing much of the signal
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	Accidental out-of-band operation can be prevented
B	Interference from impulse noise will be eliminated
C	More stations can be accommodated within a given signal passband
D	It may be possible to reduce or eliminate interference from other signals

17. - G4B12

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

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

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It ensures that the neutral wire is grounded
B	It prevents signal overload
C	It prevents a blown fuse in the event of an internal short circuit
D	It ensures that hazardous voltages cannot appear on the chassis

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 20 times less powerful
B	It is 10 times less powerful
C	It is 20 times more powerful
D	It is 100 times more powerful

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket’s wiring may be inadequate for the current drawn by the transceiver
B	Drawing more than 50 watts from this socket could cause the engine to overheat
C	The socket is not wired with an RF-shielded power cable
D	The DC polarity of the socket is reversed from the polarity of modern HF transceivers

21. - G5A05

How does an inductor react to AC?

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

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 11 watts
B	Approximately 11 milliwatts
C	Approximately 61 watts
D	Approximately 61 milliwatts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	An inductor in series
B	A capacitor in parallel
C	An inductor in parallel
D	A capacitor in series

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Long life
B	Rapid recharge
C	High voltage
D	High discharge current

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 5
B	Symbol 4
C	Symbol 1
D	Symbol 11

27. - G7B04

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

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

28. - G7C02

What output is produced by a balanced modulator?

Select	Answer
A	Audio extracted from the modulation signal
B	Frequency modulated RF
C	Double-sideband modulated RF
D	Audio with equalized frequency response

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency conversion
B	Frequency convolution
C	Frequency modulation
D	Frequency transformation

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The sum and difference
B	The arithmetic product
C	The average
D	The ratio

31. - G8C01

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

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

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an even number of physical half wavelengths long
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
D	The antenna feed point must be at DC ground potential

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It peaks at about 1/8 wavelength from the end
B	It is unaffected by the location of the feed point
C	It steadily decreases
D	It steadily increases

34. - G9C02

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

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

35. - G9D03

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

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

Figure G7-1