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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Position the antenna along the edge of a wall to reduce parasitic radiation
B	Make sure that MPE limits are not exceeded in occupied areas
C	Locate the antenna close to your operating position to minimize feed-line radiation
D	Make sure the antenna is properly shielded

2. - G0B11

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

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

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	160 meters
B	20 meters
C	30 meters
D	12 meters

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
B	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
C	Under no circumstances, FCC rules take priority
D	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
B	Type-certify equipment to FCC standards
C	Publicly document the technical characteristics of the protocol
D	Obtain an experimental license from the FCC

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	General and Technician
B	Amateur Extra, General, and Technician
C	Technician only
D	None, only Amateur Extra class licensees may be accredited

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 1
B	Region 4
C	Region 2
D	Region 3

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

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

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows true bearings and distances from a specific location
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows accurate land masses

12. - G2E07

Which of the following is required when using FT8?

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

13. - G3A10

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

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

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	12,000 miles
B	2,500 miles
C	180 miles
D	1,200 miles

15. - G3C11

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

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

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce power consumption when operating from batteries
D	To prevent receiver overload from strong incoming signals

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Better for measuring computer circuits
B	Higher precision
C	Less prone to overload
D	Faster response

18. - G4C11

What technique helps to minimize RF “hot spots” in an amateur station?

Select	Answer
A	Building all equipment in a metal enclosure
B	Bonding all equipment enclosures together
C	Using surge suppressor power outlets
D	Placing low-pass filters on all feed lines

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.3455 MHz to 14.3485 MHz
B	14.344 MHz to 14.347 MHz
C	14.347 MHz to 14.647 MHz
D	14.347 MHz to 14.350 MHz

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	The solar panel must have a charge controller
C	A series resistor must be in place
D	Ensure the battery is placed terminals-up

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	Z
B	B
C	X
D	Y

22. - G5B08

What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120 volts?

Select	Answer
A	169.7 volts
B	240.0 volts
C	84.8 volts
D	339.4 volts

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

Select	Answer
A	360 volts
B	40 volts
C	120 volts
D	25.5 volts

24. - G6A07

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

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

25. - G6B04

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

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

26. - G7A12

Which symbol in Figure G7-1 represents a solid core transformer?

Select	Answer
A	Symbol 4
B	Symbol 6
C	Symbol 1
D	Symbol 7

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is high when either or both inputs are low
B	Output is low when either or both inputs are high
C	Output is low only when both inputs are high
D	Output is high only when both inputs are high

28. - G7C02

What output is produced by a balanced modulator?

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

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Vestigial sideband
B	Amplitude compressed AM
C	8-tone frequency shift keying
D	8-bit direct sequence spread spectrum

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	16 kHz
B	5 kHz
C	3 kHz
D	8 kHz

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	SSB-SC
B	WSPR
C	MFSK16
D	PSK31

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. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	263 feet
C	132 feet
D	42 feet

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The direction of maximum radiated field strength from the antenna
C	The point of maximum current in a radiating antenna element
D	The maximum voltage standing wave point on a radiating element

35. - G9D08

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

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

Figure G7-1