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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
B	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
C	Post a copy of FCC Part 97.13 in the station
D	All these choices are correct

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	Fuel should be stored near the generator for rapid refueling in case of an emergency
B	The generator should be operated in a well-ventilated area
C	The generator must be insulated from ground
D	All these choices are correct

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	21300 kHz
B	14250 kHz
C	18155 kHz
D	24900 kHz

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	All these choices are correct
C	Transmission of bulletins of general interest to amateur radio licensees
D	Automatic identification of repeaters

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS output from the transmitter
B	PEP output from the transmitter
C	RMS input to the antenna
D	PEP input to the antenna

6. - G1D02

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

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

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only during an FCC-declared general state of communications emergency
B	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
C	Only if the 10-meter repeater control operator holds at least a General class license
D	Under no circumstances

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 allows “hands free” operation
C	It provides more power output
D	It occupies less bandwidth

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

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am quitting for the day
B	I am ready to receive
C	There is interference on the frequency
D	You are sending too fast

11. - G2D09

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

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

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide real time propagation data by monitoring amateur radio transmissions worldwide
B	To provide high-speed data services during an emergency or community event
C	To provide DX spotting reports to aid contesters and DXers
D	To provide FM repeater coverage in remote areas

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 Earth’s geomagnetic field
C	The short-term stability of the Sun’s magnetic field
D	The solar radio flux at Boulder, Colorado

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	World-wide propagation during daylight hours
B	High levels of atmospheric noise or static
C	Poor propagation at any time of day
D	Heavy distortion on signals due to photon absorption

15. - G3C11

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

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

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Desired power output without exceeding maximum allowable plate current
B	Minimum SWR on the antenna
C	Minimum plate current without exceeding maximum allowable grid current
D	Highest plate voltage while minimizing grid current

17. - G4B06

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

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

18. - G4C11

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

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

19. - G4D04

What does an S meter measure?

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

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

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A transformer
B	A length of transmission line
C	A Pi-network
D	All these choices are correct

22. - G5B06

What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

Select	Answer
A	100 watts
B	400 watts
C	353.5 watts
D	1.4 watts

23. - G5C10

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

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

24. - G6A08

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

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

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	Its thickness
B	Its conductivity
C	The ratio of outer diameter to inner diameter
D	The composition, or “mix,” of materials used

26. - G7A04

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

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

27. - G7B04

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

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

28. - G7C01

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

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

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	All these choices are correct
B	Its encoding provides error correction
C	It is sideband sensitive
D	Its bandwidth is approximately the same as BPSK31

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It results in the best signal-to-noise ratio
B	It improves impedance matching of the antenna
C	It minimizes power consumption in the receiver
D	It is required by FCC rules

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Long path propagation
B	Overmodulation
C	Backscatter propagation
D	Insufficient modulation

32. - G9A11

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

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	Higher loss increases the accuracy of SWR measured at the input to the line
C	Higher loss increases SWR measured at the input to the line
D	Higher loss reduces 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 peaks at about 1/8 wavelength from the end
B	It steadily decreases
C	It is unaffected by the location of the feed point
D	It steadily increases

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 maximum voltage standing wave point on a radiating element
C	The point of maximum current in a radiating antenna element
D	The direction of maximum radiated field strength from the antenna

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 have poor harmonic rejection
C	They must be fed with open wire line
D	They must be used with an antenna tuner