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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	30 meters
C	12 meters
D	60 meters

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
B	Never
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	Only when there is no other means of communications readily available

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Technician only
B	Extra, General and Technician
C	General only
D	General and Technician

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Locally controlled station
B	Fail-safe digital station
C	Robotically controlled station
D	Automatically controlled digital station

6. - G2A07

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

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 to 50 Hz
B	150 to 500 Hz
C	3 to 6 kHz
D	1 to 3 kHz

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Matching your transmit frequency to the frequency of a received signal
B	Sending without error
C	Operating split to avoid interference on frequency
D	Matching the speed of the transmitting station

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the date, time, frequency, power level and stations worked
B	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
C	You must keep a record of all third party traffic
D	You must keep a record of the manufacturer of your equipment and the antenna used

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Put the modem or controller in a mode which allows monitoring communications without a connection
C	Send the message: "Is this frequency in use?"
D	Transmit UI packets several times and wait to see if there is a response from another PACTOR station

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	A zero sunspot number indicate radio propagation is not possible on any band
B	All of these choices are correct.
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

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

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it does not absorb radio waves as much as other ionospheric regions
B	Because it is the densest ionospheric layer
C	Because it is the highest ionospheric region
D	All of these choices are correct

14. - G4A03

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

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

15. - G4B05

Why is high input impedance desirable for a voltmeter?

Select	Answer
A	It improves the frequency response
B	It decreases the loading on circuits being measured
C	It improves the resolution of the readings
D	It decreases battery consumption in the meter

16. - G4C13

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

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

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Prevent distortion of voice signals
B	Increase transmitter bass response for more natural sounding SSB signals
C	Increase the intelligibility of transmitted phone signals during poor conditions
D	Decrease high-frequency voice output to prevent out of band operation

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

19. - G5A12

What is one reason to use an impedance matching transformer?

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

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	8.75 watts
B	2500 watts
C	5000 watts
D	625 watts

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	14.3 microfarads
B	1000 microfarads
C	70 microfarads
D	0.07 microfarads

22. - G6A13

Why is the polarity of applied voltages important for polarized capacitors?

Select	Answer
A	The capacitor could overheat and explode
B	Reverse voltages can destroy the dielectric layer of an electrolytic capacitor
C	All of these choices are correct
D	Incorrect polarity can cause the capacitor to short-circuit

23. - G6B10

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

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

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 11
B	Symbol 5
C	Symbol 1
D	Symbol 4

25. - G7B09

What determines the frequency of an LC oscillator?

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

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	Balanced modulator
B	IF amplifier
C	Detector
D	Mixer

27. - G8A05

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

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

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	5 kHz
C	3 kHz
D	16 kHz

29. - G8C12

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

Select	Answer
A	Viterbi
B	Binary
C	Volumetric
D	Varicode

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 1000 feet
B	Ohms per 1000 feet
C	Ohms per 100 feet
D	Decibels per 100 feet

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	At the center of the antenna
B	Parallel to the antenna element
C	On the surface of the Earth or buried a few inches below the ground
D	As high as possible above the ground

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB lower
B	About the same
C	2.54 dB higher
D	3 dB higher

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A vertical antenna
B	A helical antenna for space reception
C	A broad-band mobile antenna
D	A very long and low directional receiving antenna

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	Take action to prevent human exposure to the excessive RF fields
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	All of these choices are correct
D	Secure written permission from your neighbors to operate above the controlled MPE limits

35. - G0B15

Which of the following is true of an emergency generator installation?

Select	Answer
A	All of these choices are correct
B	The generator must be insulated from ground
C	The generator should be located in a well-ventilated area
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

Figure G7-1