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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	1855 kHz
B	3560 kHz
C	2560 kHz
D	3650 kHz

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	Only "10 codes" are permitted
B	They are not permitted
C	They may be used if they do not obscure the meaning of a message
D	Only "Q" signals are permitted

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person's home citizenship must be in ITU region 2
B	The person must hold an FCC granted Amateur Radio license of General Class or above
C	The person must be a resident of the U.S. for a minimum of 5 years
D	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner

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 not encrypted
D	When messages are encrypted

6. - G2A05

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

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Tell the interfering stations to change frequency
B	Report the interference to your local Amateur Auxiliary Coordinator
C	Increase power to overcome interference
D	As a common courtesy, move your contact to another frequency

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Automatic keyers are used to send Morse code instead of hand keys
B	Breaking stations send the Morse code prosign BK
C	An operator must activate a manual send/receive switch before and after every transmission
D	Transmitting stations can receive between code characters and elements

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	All of these choices are correct
B	Band and/or frequency of the contact
C	Call sign of station contacted and the signal report given
D	Date and time of contact

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.000 - 14.050 MHz
B	14.275 - 14.350 MHz
C	14.070 - 14.100 MHz
D	14.150 - 14.225 MHz

11. - 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 of the solar cycle
B	At any point in the solar cycle
C	Only at the maximum point of the solar cycle
D	At the summer solstice

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

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

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation using high elevation angles
C	Long path HF propagation at sunrise and sunset
D	Propagation near the MUF

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Automatic generation of strings of dots and dashes for CW operation
C	VOX operation
D	Computer interface for PSK and RTTY operation

15. - G4B06

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

Select	Answer
A	Faster response
B	Better for measuring computer circuits
C	Better for RF measurements
D	Better precision for most uses

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	On-and-off humming or clicking
B	Severely distorted audio
C	A chirpy CW signal
D	A CW signal at a nearly pure audio frequency

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	Your displayed carrier frequency may be set at the edge of the segment
C	At least 3 kHz above the edge of the segment
D	At least 1 kHz above the edge of the segment

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using resistor wire
B	To the battery using resistor wire
C	To the alternator or generator using heavy gauge wire
D	To the battery using heavy gauge wire

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Conductance
B	Reactance
C	Admittance
D	Reluctance

20. - G5B02

How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

Select	Answer
A	It equals the average of each branch current
B	It equals the sum of the currents through each branch
C	It is the sum of the reciprocal of each individual voltage drop
D	It decreases as more parallel branches are added to the circuit

21. - G5C17

What is the value in nanofarads (nF) of a 22,000 pF capacitor?

Select	Answer
A	0.22 nF
B	2.2 nF
C	220 nF
D	22 nF

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

Select	Answer
A	1.0 volts
B	0.1 volt
C	0.7 volts
D	0.3 volts

23. - G6B15

What is the main reason to use keyed connectors instead of non-keyed types?

Select	Answer
A	Reduced chance of incorrect mating
B	Higher current carrying capacity
C	All of these choices are correct
D	Prevention of use by unauthorized persons

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Fewer circuit components are required
B	Faster switching time makes higher output voltage possible
C	High frequency operation allows the use of smaller components
D	All of these choices are correct

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	8
B	3
C	6
D	16

26. - G7C07

What is the simplest combination of stages that implement a superheterodyne receiver?

Select	Answer
A	HF oscillator, mixer, detector
B	RF amplifier, detector, audio amplifier
C	HF oscillator, prescaler, audio amplifier
D	RF amplifier, mixer, IF discriminator

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Amplitude modulation
B	Frequency shift keying
C	Phase modulation
D	Frequency modulation

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	5 kHz
B	416.7 Hz
C	60 kHz
D	101.75 Hz

29. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Binary
C	Varicode
D	Volumetric

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	50 and 75 ohms
B	80 and 100 ohms
C	25 and 30 ohms
D	500 and 750 ohms

31. - G9B04

What is the radiation pattern of a dipole antenna in free space in the plane of the conductor?

Select	Answer
A	It is a figure-eight at right angles to the antenna
B	It has a pair of lobes on one side of the antenna and a single lobe on the other side
C	It is a circle (equal radiation in all directions)
D	It is a figure-eight off both ends of the antenna

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To match the relatively high feed point impedance to 50 ohms
B	To increase the front-to-back ratio
C	To match the relatively low feed point impedance to 50 ohms
D	To increase the main lobe gain

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	High forward gain
B	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
C	High vertical angle radiation for working stations within a radius of a few hundred kilometers
D	All of these choices are correct

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	Post a copy of OET Bulletin 65 in the station
B	Post a copy of FCC Part 97.13 in the station
C	Perform a routine RF exposure evaluation
D	All of these choices are correct

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder flux will prevent a low conductivity connection
B	The resistance of solder is too high
C	Solder has too high a dielectric constant to provide adequate lightning protection
D	A soldered joint will likely be destroyed by the heat of a lightning strike