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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	Only stations transmitting more than 500 watts PEP
B	Only stations with antennas lower than one wavelength above the ground
C	All stations with a time-averaged transmission of more than one milliwatt
D	All commercial stations; amateur radio stations are exempt

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	Always hold on to the tower with one hand
B	Ensure that all heavy tools are securely fastened to the harness
C	All these choices are correct
D	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Occasional retransmission of weather and propagation forecast information from US government stations
B	Encrypted messages, if not intended to facilitate a criminal act
C	Unidentified transmissions of less than 10 seconds duration for test purposes only
D	Automatic retransmission of other amateur signals by any amateur station

5. - G1C09

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

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

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	There is no age limit
B	21 years
C	16 years
D	18 years

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

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single phase modulation
B	Single sideband
C	Double sideband
D	Frequency modulation

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	3 kHz to 6 kHz
C	1 kHz to 3 kHz
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	Key clicks
B	Chirpy or unstable signal
C	100 percent copy
D	Report was read from an S meter rather than estimated

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

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Gateway
B	RJ-45
C	Terminal Node Controller
D	Printer/Server

13. - G3A12

What does the K-index measure?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The short-term stability of the Sun’s magnetic field
C	The solar radio flux at Boulder, Colorado
D	The short-term stability of Earth’s geomagnetic field

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

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Chordal hop
B	Scatter
C	Short-path
D	Faraday rotation

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	When using digital modes, too much ALC activity can cause the transmitter to overheat
C	All these choices are correct
D	The ALC action distorts the signal

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	Standing wave ratio
D	RF interference

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It ensures that hazardous voltages cannot appear on the chassis
B	It ensures that the neutral wire is grounded
C	It prevents a blown fuse in the event of an internal short circuit
D	It prevents signal overload

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 DC polarity of the socket is reversed from the polarity of modern HF transceivers
B	The socket is not wired with an RF-shielded power cable
C	Drawing more than 50 watts from this socket could cause the engine to overheat
D	The socket’s wiring may be inadequate for the current drawn by the transceiver

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Conductance
B	Reluctance
C	Admittance
D	Susceptance

22. - G5B11

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

Select	Answer
A	2.00
B	0.707
C	1.414
D	1.00

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	70 millihenries
B	14.3 millihenries
C	7 millihenries
D	1,000 millihenries

24. - G6A08

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

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

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Multi-Mode Integrated Circuit
B	Monolithic Microwave Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Metal Monolayer Integrated Circuit

26. - G7A06

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

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

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier in which the output preserves the input waveform
B	A Class C high efficiency amplifier
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

28. - G7C05

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

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

29. - G8A13

What is a link budget?

Select	Answer
A	The sum of antenna gains minus system losses
B	The financial costs associated with operating a radio link
C	The sum of transmit power and antenna gains minus system losses as seen at the receiver
D	The difference between transmit power and receiver sensitivity

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To prevent overmodulation
B	To aid in tuning your transmitter
C	Some modes have high duty cycles that could exceed the transmitter’s average power rating
D	To allow time for the other station to break in during a transmission

31. - G8C02

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

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

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	High SWR increases loss in a lossy transmission line
C	High SWR makes it difficult to measure transmission line loss
D	There is no relationship between transmission line loss and SWR

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	As high as possible above the ground
B	Parallel to the antenna element
C	On the surface or buried a few inches below the ground
D	At the center of the antenna

34. - G9C01

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

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

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

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