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

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 must be insulated from ground
C	All these choices are correct
D	The generator should be operated in a well-ventilated area

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 must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations may use the band only during emergencies
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be posted on the internet or published in a national periodical
B	All these choices are correct
C	The frequency must be coordinated with the National Beacon Organization
D	No more than one beacon station may transmit in the same band from the same station location

5. - G1C09

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

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

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Only those of the FCC
B	Those of both the remote station’s country and the FCC
C	Those of the remote station’s country and the FCC’s third-party regulations
D	Only those of the remote station’s country

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must be for other licensed amateurs
B	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
C	They must relate to emergencies or disaster relief
D	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Transmit audio or microphone gain
B	RF clipping level
C	Attenuator level
D	Antenna inductance or capacitance

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

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

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

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	Submit a log to the contest sponsor
C	Identify your station according to normal FCC regulations
D	Send a QSL card to the stations worked, or QSL via Logbook of The World

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	170 Hz
B	850 Hz
C	85 Hz
D	425 Hz

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

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	180 miles
C	1,200 miles
D	2,500 miles

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	There are very large, sudden swings in signal strength
B	Phone signals have high intelligibility
C	Scatter propagation occurs only at night
D	Signals have a fluttering sound

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 plate current without exceeding maximum allowable grid current
C	Highest plate voltage while minimizing grid current
D	Minimum SWR on the antenna

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Radio wave propagation
B	RF interference
C	Antenna front-to-back ratio
D	Standing wave ratio

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	You receive reports of harmonic interference from your station
B	The SWR reading for one or more antennas is suddenly very high
C	You receive reports of “hum” on your station’s transmitted signal
D	An item of station equipment starts to draw excessive amounts of current

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 8 times
B	Approximately 1.5 times
C	Approximately 4 times
D	Approximately 2 times

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.02 VDC
B	0.5 VDC
C	1.38 VDC
D	0.2 VDC

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Farad
C	Siemens
D	Ampere

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	8.5 volts
B	34 volts
C	12 volts
D	24 volts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	3,583 picofarads
C	576.9 nanofarads
D	1,733 picofarads

24. - G6A09

Which of the following describes MOSFET construction?

Select	Answer
A	The gate is formed by a back-biased junction
B	The source is separated from the drain by a thin insulating layer
C	The gate is separated from the channel by a thin insulating layer
D	The source is formed by depositing metal on silicon

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	Large values of inductance may be obtained
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All these choices are correct

26. - G7A06

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

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

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	SSB
B	FM
C	AM
D	All these choices are correct

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	The DSP filter is much more effective at VHF frequencies
C	Fewer digital components are required
D	Mixing products are greatly reduced

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	The transmitter’s carrier is properly suppressed
B	The transmitter’s automatic level control (ALC) is properly adjusted
C	Signal distortion caused by insufficient collector current
D	Signal distortion caused by excessive drive or speech levels

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 minimizes power consumption in the receiver
C	It improves impedance matching of the antenna
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	Insufficient modulation
C	Overmodulation
D	Backscatter propagation

32. - G9A03

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

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

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. - G9C01

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

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

35. - G9D12

What is the common name of a dipole with a single central support?

Select	Answer
A	Lazy H
B	Inverted V
C	Sloper
D	Inverted L