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	Change to a non-polarized antenna with higher gain
B	All these choices are correct
C	Use an antenna with a higher front-to-back ratio
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 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. - 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 may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
B	Amateur stations may use the band only during emergencies
C	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Unidentified test transmissions of less than 10 seconds in duration
B	Transmissions to assist with learning the International Morse code
C	All these choices are correct
D	Regular transmissions offering equipment for sale, if intended for amateur radio use

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1500 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	2000 watts PEP output

6. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
B	The person’s home citizenship must be in ITU region 2
C	The person must be a resident of the US for a minimum of 5 years
D	The person must hold an FCC granted amateur radio license of General class or above

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	Anywhere in the band
B	No part
C	Channels 1 through 4
D	Channels 42 through 45

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	Transmit audio or microphone gain
D	RF clipping level

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only contacts with stations not within the 48 contiguous states
B	Only digital contacts
C	Only contacts with other stations within the 48 contiguous states
D	Only SSTV contacts

10. - G2C01

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

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

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

12. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Send broadcast packets containing your call sign while in MONITOR mode
B	Joining an existing contact is not possible, PACTOR connections are limited to two stations
C	Send a NAK code
D	Transmit a steady carrier until the PACTOR protocol times out and disconnects

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

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	A slightly delayed echo might be heard
B	Signal strength increased by 3 dB
C	The signal might be cancelled causing severe attenuation
D	Periodic fading approximately every 10 seconds

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To transmit on one frequency and listen on another
B	To improve frequency accuracy by allowing variable frequency output (VFO) operation
C	To allow transmitting on two frequencies at once
D	To permit full duplex operation -- that is, transmitting and receiving at the same time

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 frequency response
D	It improves the resolution of the readings

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	On-and-off humming or clicking
B	A chirpy CW signal
C	Severely distorted audio
D	A CW signal at a nearly pure audio frequency

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It increases peak power
C	It reduces harmonic distortion
D	It increases average power

20. - G4E11

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

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

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Resonance causes impedance to be very low
B	Impedance is equal to the geometric mean of the inductance and capacitance
C	Resonance causes impedance to be very high
D	Impedance is equal to the arithmetic mean of the inductance and capacitance

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It equals the average of the branch currents
B	It decreases as more parallel branches are added to the circuit
C	It equals the sum of the currents through each branch
D	It is the sum of the reciprocal of each individual voltage drop

23. - G5C14

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

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

24. - G6A08

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

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

25. - G6B11

What is an SMA connector?

Select	Answer
A	A connector designed for serial multiple access signals
B	A small threaded connector suitable for signals up to several GHz
C	A type-S to type-M adaptor
D	A type of push-on connector intended for high-voltage applications

26. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	180 degrees
B	360 degrees
C	90 degrees
D	270 degrees

27. - G7B04

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

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

28. - G7C01

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

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

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By changing an oscillator’s frequency directly with a digital control signal
B	By keying an FM transmitter with a sub-audible tone
C	By using a transceiver’s computer data interface protocol to change frequencies
D	By reconfiguring the CW keying input to act as a tone generator

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	RF input
B	Local oscillator
C	Image frequency
D	Beat frequency oscillator

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is intensity, time is vertical
B	Frequency is horizontal, signal strength is vertical, time is intensity
C	Frequency is vertical, signal strength is intensity, time is horizontal
D	Frequency is vertical, signal strength is horizontal, time is intensity

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	5:1
B	Between 1:1 and 5:1 depending on the reflected power at the transmitter
C	1:1
D	Between 1:1 and 5:1 depending on the characteristic impedance of the line

33. - G9B01

What is a characteristic of a random-wire HF antenna connected directly to the transmitter?

Select	Answer
A	It must be longer than 1 wavelength
B	It produces only vertically polarized radiation
C	Station equipment may carry significant RF current
D	It is more effective on the lower HF bands than on the higher bands

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Beamwidth increases
B	Resonant frequency is lower
C	Front-to-back ratio decreases
D	Gain increases

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A horizontal dipole placed at approximately 1/2 wavelength above the ground
B	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
C	A vertical dipole placed at approximately 1/2 wavelength above the ground
D	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground