US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

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

2. - G1B03

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

Select	Answer
A	Transmission of bulletins of general interest to Amateur Radio licensees
B	Identifying net frequencies
C	Observation of propagation and reception
D	Automatic identification of repeaters

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	1200 baud
B	19.6 kilobaud
C	300 baud
D	56 kilobaud

4. - G1D04

Which of the following is a requirement for administering a Technician Class license examination?

Select	Answer
A	At least two General Class or higher VEs must be present, but only one need be Extra Class
B	At least three VEs of Technician Class or higher must observe the examination
C	At least two General Class or higher VEs must be present
D	At least three General Class or higher VEs must observe the examination

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When under automatic control
B	Under no circumstances
C	When messages are encrypted
D	When messages are not encrypted

6. - G2A01

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

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	Only when all amateur stations are instructed to stop transmitting
B	When they declare a temporary state of communication emergency
C	When they seize your equipment for use in disaster communications
D	When the President's War Emergency Powers have been invoked

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Stop sending
B	Send more slowly
C	I am troubled by static
D	Zero beat my signal

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	A directional antenna
B	An isotropic antenna
C	A quarter-wave vertical antenna
D	An omnidirectional antenna

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	USB
B	SSB
C	LSB
D	DSB

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is improved
B	VHF/UHF ducting is disturbed
C	HF communications are disturbed
D	HF communications are improved

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	All of these choices are correct
B	They have very large swings in signal strength
C	They have high intelligibility
D	They have a wavering sound

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	Q Multiplier
B	Antenna coupler or antenna tuner
C	Balanced modulator
D	SWR Bridge

15. - G4B08

Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?

Select	Answer
A	A multimeter
B	An antenna noise bridge
C	A field strength meter
D	A Q meter

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Connect all equipment grounds together
B	Install a few ferrite beads on the ground wire where it connects to your station
C	Install an RF filter in series with the ground wire
D	Use a ground loop for best conductivity

17. - G4D04

What does an S meter measure?

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

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow remote tuning
B	To increase the power handling capacity of a whip antenna
C	To electrically lengthen a physically short antenna
D	To allow automatic band changing

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Siemens
C	Ohm
D	Ampere

20. - G5B09

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

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

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	4.7 microfarads
B	0.47 microfarads
C	47,000 microfarads
D	47 microfarads

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its peak and valley current points
B	Its active region (between the cutoff and saturation regions)
C	Its saturation and cutoff regions
D	Its enhancement and depletion modes

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Frequency Counter
B	Linear voltage regulator
C	NAND Gate
D	Microprocessor

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 7
D	Symbol 6

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Window comparator
B	Phase detector
C	Charge-coupled device
D	Microcontroller

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	Balanced modulator
B	RF oscillator
C	IF filter
D	Product detector

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Multiplex modulation
B	Phase modulation
C	Pulse modulation
D	Amplitude modulation

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Cancellation
B	Synthesizing
C	Heterodyning
D	Phase inverting

29. - G8C10

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 1000 feet
C	Decibels per 100 feet
D	Ohms per 100 feet

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	11 feet
C	21 feet
D	16 feet

32. - G9C05

How does increasing boom length and adding directors affect a Yagi antenna?

Select	Answer
A	Front to side ratio decreases
B	Gain increases
C	Front to back ratio decreases
D	Beamwidth increases

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has poor directivity
B	All of these choices are correct
C	Its impedance is too low for effective matching
D	It has high losses compared to other types of antennas

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
B	A lower transmitter duty cycle permits greater short-term exposure levels
C	High duty cycle transmitters are exempt from RF exposure requirements
D	A higher transmitter duty cycle permits greater short-term exposure levels

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 20
B	AWG number 12
C	AWG number 16
D	AWG number 8

Figure G7-1