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	17 meters
B	30 meters
C	160 meters
D	12 meters

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	300 feet
B	100 feet
C	200 feet
D	50 feet

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	1200 watts PEP output
C	1500 watts PEP output
D	200 watts PEP output

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 General Class or higher VEs must observe the examination
C	At least two General Class or higher VEs must be present
D	At least three VEs of Technician Class or higher must observe the examination

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Any messages, as long as the text of the message is recorded in the station log
B	Any message, as long as the amateur operator is not paid
C	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
D	Only messages for other licensed amateurs

6. - G2A07

Which of the following statements is true of the single sideband voice mode?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	SSB is the only voice mode that is authorized on the 160-meter, 75-meter and 40-meter amateur bands
C	Only one sideband and the carrier are transmitted; the other sideband is suppressed
D	SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Except during FCC declared emergencies, no one has priority access to frequencies
B	Nets always have priority
C	Contest operations must always yield to non-contest use of frequencies
D	QSOs in progress always have priority

8. - G2C05

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

Select	Answer
A	A slow speed until contact is established
B	At the standard calling speed of 5 wpm
C	The speed at which the CQ was sent
D	The fastest speed at which you are comfortable copying

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows true bearings and distances from a particular location
D	A map that shows the angle at which an amateur satellite crosses the equator

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	DSB
B	USB
C	LSB
D	SSB

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	20 to 40 hours
B	4 to 8 minutes
C	28 days
D	14 days

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency during a 24 hour period
B	The Lowest Usable Frequency for communications between two points
C	The Longest Universal Function for communications between two points
D	The Longest Universal Function during a 24 hour period

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 a wavering sound
D	They have high intelligibility

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The transmitter is emitting an SSB signal, as opposed to DSB operation
B	The transceiver is operating from an external power source
C	The radio is operating at half power
D	The transceiver is set to different transmit and receive frequencies

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All of these choices are correct
B	Receiver
C	Transmitter
D	Antenna and feed line

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	Overheating of ground straps
C	A ground loop
D	Corrosion of the ground rod

17. - G4D04

What does an S meter measure?

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

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Operating bandwidth may be very limited
B	Harmonic radiation may increase
C	Short antennas are more likely to cause distortion of transmitted signals
D	Short antennas can only receive circularly polarized signals

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Reluctance
C	Admittance
D	Conductance

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	2.00
C	0.707
D	1.414

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. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A field effect transistor
B	A tunnel diode
C	A bipolar transistor
D	A varistor

23. - G6B11

What is a microprocessor?

Select	Answer
A	A low voltage amplifier used in a microwave transmitter modulator stage
B	A low power analog signal processor used as a microwave detector
C	A microwave detector, amplifier, and local oscillator on a single integrated circuit
D	A computer on a single integrated circuit

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	Two times the normal peak output voltage of the power supply
B	One-half the normal peak output voltage of the power supply
C	Equal to the normal output voltage of the power supply
D	One-half the normal output voltage of the power supply

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The time delay of the lag circuit
B	The inductance and capacitance in the tank circuit
C	The number of stages in the divider
D	The number of stages in the counter

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	IF filter
B	RF oscillator
C	Product detector
D	Balanced modulator

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	VFO
B	Mixer
C	BFO
D	Discriminator

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The version of the PSK protocol
C	The approximate transmitted symbol rate
D	The number of characters that can be represented by PSK31

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	3:1
C	6:1
D	1.5:1

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Shorter Radials
B	Lower radiation resistance
C	Lower feed point impedance
D	Lower ground reflection losses

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The point of maximum current in a radiating antenna element
B	The maximum voltage standing wave point on a radiating element
C	The direction of maximum radiated field strength from the antenna
D	The magnitude of the maximum vertical angle of radiation

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in azimuth
B	It narrows the main lobe in elevation
C	It allows quick selection of vertical or horizontal polarization
D	It allows simultaneous vertical and horizontal polarization

34. - G0A04

What does "time averaging" mean in reference to RF radiation exposure?

Select	Answer
A	The total time of the exposure
B	The total RF exposure averaged over a certain time
C	The average amount of power developed by the transmitter over a specific 24 hour period
D	The average time it takes RF radiation to have any long-term effect on the body

35. - G0B07

Which of these choices should be observed when climbing a tower using a safety belt or harness?

Select	Answer
A	All of these choices are correct
B	Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life
C	Never lean back and rely on the belt alone to support your weight
D	Ensure that all heavy tools are securely fastened to the belt D-ring