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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	An SWR meter with a peak-reading function
B	A receiver with digital signal processing (DSP) noise reduction
C	An oscilloscope with a high-stability crystal marker generator
D	A calibrated field strength meter with a calibrated antenna

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Parallel to the water supply line
B	Outside the building
C	Next to the closest power pole
D	As close to the station equipment as possible

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B06

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

Select	Answer
A	Under no circumstances, FCC rules take priority
B	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
C	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
D	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	200 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	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	There are no requirements other than being able to show a copy of the expired license
D	Contact the FCC to have the license reinstated

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	These frequencies are set aside for emergency operations
B	A system of automatic digital stations operates on those frequencies
C	These frequencies are set aside for bulletins from the FCC
D	A system of propagation beacon stations operates on those frequencies

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	The received signal is more natural sounding
B	It occupies less bandwidth
C	It provides more power output
D	It allows “hands free” operation

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	2 kHz to 3 kHz
B	Approximately 6 kHz
C	5 Hz to 50 Hz
D	150 Hz to 500 Hz

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Key clicks
C	Report was read from an S meter rather than estimated
D	Chirpy or unstable signal

11. - G2D06

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

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

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	At the top of the SSB phone segment, near 14.325 MHz
B	Between 14.070 MHz and 14.100 MHz
C	At the bottom of the slow-scan TV segment, near 14.230 MHz
D	In the middle of the CW segment, near 14.100 MHz

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the maximum point
B	At any point
C	Only at the minimum point
D	At the summer solstice

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Signals are scattered from the magnetosphere, which is not a good reflector
B	Only a small part of the signal energy is scattered into the skip zone
C	Propagation is via ducts in the F region, which absorb most of the energy
D	Propagation is via ground waves, which absorb most of the signal energy

16. - G4A05

Why is automatic level control (ALC) used with an RF power amplifier?

Select	Answer
A	To prevent excessive drive
B	To reduce harmonic radiation
C	To balance the transmitter audio frequency response
D	To increase overall efficiency

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. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Reverse-biased diode
B	Bypass capacitor
C	Forward-biased diode
D	Bypass inductor

19. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Transmitter power output
C	Carrier suppression
D	Received signal strength

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce RF voltage discharge from the tip of the antenna while transmitting
B	To increase the “Q” of the antenna
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	Z
B	B
C	Y
D	X

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	530 watts
B	1060 watts
C	1500 watts
D	2120 watts

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	0.30 henries
B	3.3 henries
C	3.3 millihenries
D	30 millihenries

24. - G6A08

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

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

25. - G6B04

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

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

26. - G7A10

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

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the RF output power by the DC input power
B	Add the RF input power to the DC output power
C	Divide the DC input power by the DC output power
D	Multiply the RF input power by the reciprocal of the RF output power

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Pure sine wave output
B	Relatively high-power output
C	Extremely narrow tuning range
D	Variable output frequency with the stability of a crystal oscillator

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Phase modulation
B	Amplitude modulation
C	Power modulation
D	Frequency modulation

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Intermediate interference
B	Quadrature response
C	Mixer interference
D	Image response

31. - G8C01

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

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

32. - G9A03

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

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

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	Antenna height has no effect on the pattern
C	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
D	If the antenna is too high, the pattern becomes unpredictable

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Larger-diameter elements
B	Loading coils in series with the element
C	Tapered-diameter elements
D	Closer element spacing

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Very low
B	Very high
C	Approximately 50 ohms
D	Approximately 300 ohms

Figure G7-1