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. - G0A10

What should be done if evaluation shows that a neighbor might experience more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Use an antenna with a higher front-to-back ratio
B	All these choices are correct
C	Change to a non-polarized antenna with higher gain
D	Take precautions to ensure that the antenna cannot be pointed in their direction when they are present

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 together with all other grounds
C	Bends in ground wires must be made as close as possible to a right angle
D	They must be bonded to all buried water and gas lines

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	21.275 MHz to 21.300 MHz
B	7.125 MHz to 7.175 MHz
C	28.000 MHz to 28.025 MHz
D	All these choices are correct

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	10 watts PEP output
B	200 watts PEP output
C	20 watts PEP output
D	100 watts PEP output

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	ERP of 100 watts PEP with respect to a dipole
B	1500 watts PEP
C	10 watts RMS
D	ERP of 100 watts PEP with respect to an isotropic antenna

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

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must be for other licensed amateurs
B	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
C	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
D	They must relate to emergencies or disaster relief

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Antenna inductance or capacitance
B	Attenuator level
C	RF clipping level
D	Transmit audio or microphone gain

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
B	Decrease power and continue to transmit
C	Advise the interfering stations that you are on the frequency and that you have priority
D	Switch to the opposite sideband

10. - G2C01

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

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

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	Send a QSL card to the stations worked, or QSL via Logbook of The World
B	All these choices are correct
C	Submit a log to the contest sponsor
D	Identify your station according to normal FCC regulations

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	USB
B	LSB
C	CW
D	DSB

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	80 meters and 160 meters
C	15 meters, 12 meters, and 10 meters
D	30 meters and 20 meters

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the MUF
B	Just above the LUF
C	Just above the critical frequency
D	Just below the critical frequency

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Long path HF propagation at sunrise and sunset
B	Double hop propagation near the LUF
C	Short distance MF or HF propagation at high elevation angles
D	Propagation near the MUF

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. - G4B05

Why do voltmeters have high input impedance?

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

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	Flat braid rather than round wire has been used for the ground wire
C	The ground wire has high impedance on that frequency
D	The ground rod is resonant

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 8 times
B	Approximately 4 times
C	Approximately 2 times
D	Approximately 1.5 times

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ground the solar panel outer metal framework
B	Ensure the battery is placed terminals-up
C	A series resistor must be in place
D	The solar panel must have a charge controller

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Ampere
C	Farad
D	Siemens

22. - G5B11

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

Select	Answer
A	0.707
B	1.414
C	1.00
D	2.00

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	300 ohms
B	67 ohms
C	150 ohms
D	75 ohms

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Peak and valley current points
B	The active region (between cutoff and saturation)
C	Enhancement and depletion modes
D	Saturation and cutoff

25. - G6B04

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

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

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	Only one diode is required
B	More current can be drawn from the half-wave rectifier
C	The ripple frequency is twice that of a full-wave rectifier
D	The output voltage is two times the peak input voltage

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	FM
C	SSB
D	All these choices are correct

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Detection
B	All these choices are correct
C	Filtering
D	Modulation

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

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	60 kHz
C	101.75 Hz
D	5 kHz

31. - G8C03

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

Select	Answer
A	Header
B	Directory
C	Trailer
D	Preamble

32. - G9A11

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

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

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

34. - G9C02

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

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

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They have poor harmonic rejection
C	They present low impedance on all design frequencies
D	They must be fed with open wire line