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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Move to a clear frequency or stop transmitting
B	Attempt to contact the station and request that it stop the interference
C	Notify the FCCs regional Engineer in Charge of the interference
D	Increase your transmitter's power to overcome the interference

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	All of these choices are correct
B	Follow generally accepted band plans agreed to by the Amateur Radio community
C	Monitor the frequency before transmitting
D	Insure that the frequency and mode selected are within your license class privileges

3. - G1C01

What is the maximum transmitting power an amateur station may use on 10.140 MHz?

Select	Answer
A	1500 watts PEP output
B	200 watts PEP output
C	1000 watts PEP output
D	2000 watts PEP output

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 two General Class or higher VEs must be present
C	At least two General Class or higher VEs must be present, but only one need be Extra Class
D	At least three General Class or higher VEs must observe the examination

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

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is listening for a station in Germany
B	A general call for any station
C	A distress call
D	The caller is looking for any station outside their own country

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 the President's War Emergency Powers have been invoked
C	When they seize your equipment for use in disaster communications
D	When they declare a temporary state of communication emergency

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	Transmitting stations can receive between code characters and elements
C	Breaking stations send the Morse code prosign BK
D	An operator must activate a manual send/receive switch before and after every transmission

9. - G2D04

Which of the following describes an azimuthal projection map?

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

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	Frequent retries or timeouts
B	Long pauses in message transmission
C	Failure to establish a connection between stations
D	All of these choices are correct

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The solar radio flux at Boulder, Colorado
B	The relative position of sunspots on the surface of the Sun
C	The short term stability of the Earth's magnetic field
D	The stability of the Sun's magnetic field

12. - G3B07

What does LUF stand for?

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

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency below the Maximum Usable Frequency
B	The communication is during a sunspot maximum
C	The communication is during a sudden ionospheric disturbance
D	The signal is heard on a frequency above the Maximum Usable Frequency

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

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Input impedance is much lower
B	Complex waveforms can be measured
C	Complex impedances can be easily measured
D	An oscilloscope uses less power

16. - G4C13

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

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

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 to 14.347 MHz
B	14.347 to 14.647 MHz
C	14.3455 to 14.3485 MHz
D	14.347 to 14.350 MHz

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To narrow the operating bandwidth of the antenna
C	To increase the "Q" of the antenna
D	To reduce the chance of damage if the antenna should strike an object

19. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance decreases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance increases

20. - G5B09

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

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

21. - G5C18

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

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

22. - G6A16

What will happen to the resistance if the temperature of a resistor is increased?

Select	Answer
A	It will become time dependent
B	It will change depending on the resistor's temperature coefficient
C	It will change depending on the resistor's reactance coefficient
D	It will stay the same

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	PL-259
B	Type N
C	RCA Phono
D	BNC

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	180 degrees
B	360 degrees
C	270 degrees
D	90 degrees

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	CW
C	SSB
D	All of these choices are correct

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	RF amplifier
B	Filter
C	IF amplifier
D	Carrier oscillator

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By using a transceiver's computer data interface protocol to change frequencies
B	By reconfiguring the CW keying input to act as a tone generator
C	By changing an oscillator's frequency directly with a digital control signal
D	By keying an FM transmitter with a sub-audible tone

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	All of these choices are correct
B	Some modes have high duty cycles which could exceed the transmitter's average power rating.
C	To aid in tuning your transmitter
D	To allow time for the other station to break in during a transmission

29. - G8C07

How does the receiving station respond to an ARQ data mode packet containing errors?

Select	Answer
A	It requests a change in transmitting protocol
B	It terminates the contact
C	It sends the packet back to the transmitting station
D	It requests the packet be retransmitted

30. - G9A05

How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?

Select	Answer
A	Attenuation increases
B	Attenuation is independent of frequency
C	Attenuation reaches a maximum at approximately 18 MHz
D	Attenuation decreases

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	263 feet
B	42 feet
C	84 feet
D	131 feet

32. - G9C11

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

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

33. - G9D03

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

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

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	All of these choices are correct
B	Ensure that you and the antenna structure are grounded
C	Wear a radiation badge
D	Turn off the transmitter and disconnect the feed line

35. - G0B10

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

Select	Answer
A	Tin in the solder can "cold flow" causing shorts in the circuit
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	RF energy can convert the lead into a poisonous gas