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	Make sure the antenna is properly shielded
D	Locate the antenna close to your operating position to minimize feed-line radiation

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Unground the base of the tower
B	All these choices are correct
C	Notify the electric company that a person will be working on the tower
D	Make sure all circuits that supply power to the tower are locked out and tagged

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	80 meters, 40 meters, 20 meters, and 15 meters
B	80 meters, 20 meters, 15 meters, and 10 meters
C	160 meters, 60 meters, 15 meters, and 12 meters
D	60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	200 feet
B	250 feet
C	100 feet
D	50 feet

5. - G1C02

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

Select	Answer
A	200 watts PEP output
B	1500 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
D	50 watts PEP output

6. - G1D05

When operating a US station by remote control from outside the country, what license is required of the control operator?

Select	Answer
A	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US
B	Only an appropriate US operator/primary license and a special remote station permit from the FCC
C	A US operator/primary station license
D	A license from the foreign country and a special remote station permit from the FCC

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Under any circumstances in which third party messages are permitted by FCC rules
B	Only when the message is intended for licensed radio amateurs
C	Only when the message is intended for third parties in areas where licensing is controlled by the FCC
D	Under no circumstances except for emergencies

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

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

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Are you listening only for a specific station?”
C	“Will you keep the frequency clear?”
D	“Are you busy?” or “Is this frequency in use?”

11. - G2D09

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

Select	Answer
A	Submit a log to the contest sponsor
B	All these choices are correct
C	Send a QSL card to the stations worked, or QSL via Logbook of The World
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 DX spotting reports to aid contesters and DXers
B	To provide FM repeater coverage in remote areas
C	To provide high-speed data services during an emergency or community event
D	To provide real time propagation data by monitoring amateur radio transmissions worldwide

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A sudden drop in the solar flux index
B	A thunderstorm that affects radio propagation
C	Ripples in the geomagnetic force
D	A temporary disturbance in Earth’s geomagnetic field

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They pass through the ionosphere
C	They are refracted and trapped in the ionosphere to circle Earth
D	They are refracted back to Earth

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region absorbs signals at these frequencies during daylight hours
B	The F region is unstable during daylight hours
C	The D region absorbs signals at these frequencies during daylight hours
D	The E region is unstable during daylight hours

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	Minimum SWR on the antenna
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	Faster response
C	Better for measuring computer circuits
D	Less prone to overload

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It prevents signal overload
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 ensures that hazardous voltages cannot appear on the chassis

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 2 times
B	Approximately 4 times
C	Approximately 1.5 times
D	Approximately 8 times

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ensure the battery is placed terminals-up
B	A series resistor must be in place
C	The solar panel must have a charge controller
D	Ground the solar panel outer metal framework

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	B
B	Y
C	X
D	Z

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	353.5 watts
C	1.4 watts
D	400 watts

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	17 ohms
C	80 ohms
D	0.17 ohms

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	12 volts
B	8.5 volts
C	6 volts
D	10.5 volts

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for power supply regulation
C	High power handling capability
D	Better suited for RF amplification

26. - G7A10

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

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

27. - G7B10

Which of the following describes a linear amplifier?

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

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	Zero
B	90 degrees
C	45 degrees
D	180 degrees

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The waveform created by connecting the peak values of the modulated signal
B	Spurious signals that envelop nearby frequencies
C	The bandwidth of the modulated signal
D	The carrier frequency that contains the signal

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	5F1-3F2
B	All these choices are correct
C	2F1-F2
D	3F1-F2

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By transmitting redundant information with the data
C	By using a parity bit with each character
D	By using the Varicode character set

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 100 feet
B	Decibels per 100 feet
C	Decibels per 1,000 feet
D	Ohms per 1,000 feet

33. - G9B11

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

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

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It does not require any inductors or capacitors
B	All these choices are correct
C	It does not require the driven element to be insulated from the boom
D	It is useful for matching multiband antennas

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To prevent out-of-band operation
B	To notch spurious frequencies
C	To enable multiband operation
D	To provide balanced feed point impedance

Figure G7-1