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	3560 kHz
B	1855 kHz
C	3650 kHz
D	2560 kHz

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	200 feet
B	50 feet
C	100 feet
D	300 feet

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	1.8 kHz
B	3 kHz
C	2.8 kHz
D	5.6 kHz

4. - G1D04

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

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

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	English, Spanish, French, or German
B	English only
C	The language being used for the contact
D	Any language recognized by the United Nations

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B10

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

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

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Chirpy or unstable signal
B	100 percent copy
C	Key clicks
D	Report was read from an S meter rather than estimated

9. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows accurate land masses
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. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3500 - 3525 kHz
B	3700 - 3750 kHz
C	3775 - 3825 kHz
D	3570 - 3600 kHz

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved ground-wave propagation
B	Degraded high-latitude HF propagation
C	Improved high-latitude HF propagation
D	Improved chances of UHF ducting

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

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

13. - G3C07

What makes HF scatter signals often sound distorted?

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

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 set to different transmit and receive frequencies
C	The transceiver is operating from an external power source
D	The radio is operating at half power

15. - G4B11

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

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

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding shunt inductors to the conductors
B	Placing a ferrite choke around the cable
C	Adding an additional insulating jacket to the cable
D	Adding series capacitors to the conductors

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

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photovoltaic conversion
B	Photon decomposition
C	Photon emission
D	Photosynthesis

19. - G5A13

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All of these choices are correct
B	A Pi-network
C	A transformer
D	A length of transmission line

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	10.9 percent
C	12.2 percent
D	20.5 percent

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	A resistor in series
B	A capacitor in parallel
C	An inductor in series
D	A capacitor in series

22. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To decrease plate resistance
B	To reduce grid-to-plate capacitance
C	To increase the control grid resistance
D	To increase efficiency

23. - G6B10

What two devices in an Amateur Radio station might be connected using a USB interface?

Select	Answer
A	Amplifier and antenna
B	Power supply and amplifier
C	Computer and transceiver
D	Microphone and transceiver

24. - G7A12

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

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

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	High Efficiency
B	No need for bias
C	Low distortion
D	Low standby power

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Mixer
B	Balanced modulator
C	Detector
D	IF amplifier

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency transformation
B	Frequency convolution
C	Frequency modulation
D	Frequency conversion

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	31.5 Hz
B	1800 Hz
C	2300 Hz
D	500 Hz

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	FSK441 and Hellschreiber
B	JT9 and JT65
C	Clover
D	RTTY

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	1:4
B	1:2
C	2:1
D	4:1

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

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB higher than dBd gain figures
B	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
C	dBi gain figures are 2.15 dB lower then dBd gain figures
D	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB

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	All of these choices are correct
D	High vertical angle radiation for working stations within a radius of a few hundred kilometers

34. - G0A11

What precaution should you take if you install an indoor transmitting antenna?

Select	Answer
A	Make sure the antenna is properly shielded
B	Locate the antenna close to your operating position to minimize feed line radiation
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Make sure that MPE limits are not exceeded in occupied areas

35. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	RF energy can convert the lead into a poisonous gas
B	Lead can contaminate food if hands are not washed carefully after handling the solder
C	High voltages can cause lead-tin solder to disintegrate suddenly
D	Tin in the solder can "cold flow" causing shorts in the circuit

Figure G7-1