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

2. - G0B11

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

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

3. - G1A10

What portion of the 10-meter band is available for repeater use?

Select	Answer
A	The portion between 28.3 MHz and 28.5 MHz
B	The entire band
C	The portion between 28.1 MHz and 28.2 MHz
D	The portion above 29.5 MHz

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	50 feet
B	100 feet
C	250 feet
D	200 feet

5. - G1C05

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

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

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	Contact the FCC to have the license reinstated
B	There are no requirements other than being able to show a copy of the expired license
C	They must have a letter from the FCC showing they once held an amateur or commercial license
D	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam

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

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Because it is fully compatible with an AM detector
C	Lower sideband is more efficient than upper sideband at these frequencies
D	It is commonly accepted amateur practice

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	Inform your local emergency coordinator
D	Acknowledge the station in distress and determine what assistance may be needed

10. - G2C01

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

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

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The log provides evidence of operation needed to renew a license without retest
B	The FCC requires a log of all international contacts
C	The FCC requires a log of all international third-party traffic
D	To help with a reply if the FCC requests information about your station

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	Receiver attenuator set to -12 dB
B	A special hardware modem
C	Computer time accurate to within approximately 1 second
D	A vertically polarized antenna

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Long term oscillations in the upper atmosphere
B	The position of the Moon in its orbit
C	Cyclic variation in Earth’s radiation belts
D	Rotation of the Sun’s surface layers around its axis

14. - G3B06

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

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

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Phone signals have high intelligibility
B	Scatter propagation occurs only at night
C	Signals have a fluttering sound
D	There are very large, sudden swings in signal strength

16. - G4A02

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

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

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	Antenna front-to-back ratio
C	RF interference
D	Standing wave ratio

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	All these choices are correct
C	Solder flux will prevent a low conductivity connection
D	A soldered joint will likely be destroyed by the heat of a lightning strike

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 1 kHz above the edge of the segment
B	At least 3 kHz above the edge of the band
C	At least 3 kHz below the edge of the band
D	At least 1 kHz below the edge of the segment

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	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
C	The socket is not wired with an RF-shielded power cable
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	Z
C	Y
D	X

22. - G5B04

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

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

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	3,583 picofarads
B	576.9 nanofarads
C	10.750 nanofarads
D	1,733 picofarads

24. - G6A03

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

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

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The ratio of outer diameter to inner diameter
B	Its conductivity
C	Its thickness
D	The composition, or “mix,” of materials used

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave
B	Full-wave bridge
C	Half-wave
D	Synchronous

27. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A digital mixer
C	A clocked array of circuits that passes data in steps along the array
D	An array of operational amplifiers used for tri-state arithmetic operations

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	All these choices are correct
B	Demodulator stage bandwidth
C	Input amplifier noise figure
D	Input amplifier gain

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Amplitude modulation
B	Phase modulation
C	Pulse modulation
D	Multiplex modulation

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Frequency inversion
B	Phase inversion
C	Synthesizing
D	Heterodyning

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By using a parity bit with each character
B	By transmitting redundant information with the data
C	By controlling transmitter output power for optimum signal strength
D	By using the Varicode character set

32. - G9A03

What is the nominal characteristic impedance of “window line” transmission line?

Select	Answer
A	100 ohms
B	50 ohms
C	75 ohms
D	450 ohms

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight off both ends of the antenna
B	It is a figure-eight at right angles to the antenna
C	It is a circle (equal radiation in all directions)
D	It has a pair of lobes on one side of the antenna and a single lobe on the other side

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The power radiated in the major lobe compared to that in the opposite direction
C	The relative position of the driven element with respect to the reflectors and directors
D	The number of directors versus the number of reflectors

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By extending and retracting the whip
B	By deploying a capacitance hat
C	By varying its body capacitance
D	By varying the base loading inductance