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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	160 meters
C	17 meters
D	12 meters

2. - G1B03

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

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

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	300 baud
C	19.6 kilobaud
D	56 kilobaud

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	The Universal Licensing System
C	The Federal Communications Commission
D	A Volunteer Examiner Coordinator

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The foreign amateur station must be in a country with which the United States has a third party agreement
B	The control operator must have at least a General Class license
C	All of these choices are correct
D	Information must be exchanged in English

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Vestigial sideband
B	Upper sideband
C	Lower sideband
D	Double 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 seize your equipment for use in disaster communications
C	When they declare a temporary state of communication emergency
D	When the President's War Emergency Powers have been invoked

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Operating full break-in
B	Listening only for a specific station or stations
C	Listening for novice stations
D	Closing station now

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The ITU requires a log of all international third party traffic
B	The log provides evidence of operation needed to renew a license without retest
C	To help with a reply if the FCC requests information
D	The ITU requires a log of all international contacts

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Transmit a connect message on the station's published frequency
C	Send QRL in Morse code
D	Send an email to the system control operator

11. - G3A02

What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?

Select	Answer
A	It disrupts signals on lower frequencies more than those on higher frequencies
B	None, because only areas on the night side of the Earth are affected
C	It disrupts communications via satellite more than direct communications
D	It enhances propagation on all HF frequencies

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	A well-defined echo might be heard
C	The signal might be cancelled causing severe attenuation
D	Periodic fading approximately every 10 seconds

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	The ionospheric layer involved is unstable
C	Ground waves are absorbing much of the signal
D	Energy is scattered into the skip zone through several different radio wave paths

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To change frequency rapidly
B	To avoid interference from stations very close to the receive frequency
C	To permit listening on a different frequency from that on which you are transmitting
D	To tune in stations that are slightly off frequency without changing your transmit frequency

15. - G4B06

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

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

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A noise limiter
B	A Digital Signal Processor (DSP) filter
C	Balanced mixing
D	Bandpass tuning

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

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The battery charging system
B	The fuel delivery system
C	All of these choices are correct
D	The vehicle control computer

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To reduce power supply ripple
B	To maximize the transfer of power
C	To minimize transmitter power output
D	To minimize radiation resistance

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	625 watts
B	5000 watts
C	8.75 watts
D	2500 watts

21. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual capacitance
B	Displacement current coupling
C	Capacitive coupling
D	Mutual inductance

22. - G6A15

Which of the following is an advantage of an electrolytic capacitor?

Select	Answer
A	Much less leakage than any other type
B	Inexpensive RF capacitor
C	Tight tolerance
D	High capacitance for a given volume

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special connector for microwave interfacing
B	A DC power connector rated for currents between 30 and 50 amperes
C	A family of multiple circuit connectors suitable for audio and control signals
D	A special watertight connector for use in marine applications

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. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is low when either or both inputs are high

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital to analog converter
C	All of the these choices are correct
D	A digital processor chip

27. - G8A09

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

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

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	60 kHz
B	101.75 Hz
C	416.7 Hz
D	5 kHz

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	5
B	8
C	7
D	The number varies

30. - G9A08

If the SWR on an antenna feed line is 5 to 1, and a matching network at the transmitter end of the feed line is adjusted to 1 to 1 SWR, what is the resulting SWR on the feed line?

Select	Answer
A	1 to 1
B	5 to 1
C	Between 1 to 1 and 5 to 1 depending on the characteristic impedance of the line
D	Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It increases
B	It decreases
C	It reaches a maximum at an angle of 45 degrees
D	It stays the same

32. - G9C11

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

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

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	Height is not critical as long as it is significantly more than 1/2 wavelength
B	As close to one wavelength as possible
C	As close to 1/2 wavelength as possible
D	Between 1/10 and 1/4 wavelength

34. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes the blood count to reach a dangerously low level
B	It cools body tissue
C	It heats body tissue
D	It causes radiation poisoning

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	Disconnect the incoming utility power feed
B	All of these choices are correct
C	Insure that all lightning grounds are disconnected
D	Insure that the generator is not grounded

Figure G7-1