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. - G1A12

Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?

Select	Answer
A	Amateur stations are allowed to use the band only during emergencies
B	Amateur stations are allowed to use the band only if they do not cause harmful interference to primary users
C	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24 hour use of the band
D	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station

2. - G1B03

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

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

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	100 watts PEP output
C	2000 watts PEP output
D	1500 watts PEP output

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate using General Class frequency privileges
B	Whenever you operate on any amateur frequency
C	Whenever you operate using Technician frequency privileges
D	A special identifier is not required as long as your General Class license application has been filed with the FCC

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When operating within one mile of an FCC Monitoring Station
B	All of these choices are correct
C	When a station is transmitting spread spectrum emissions
D	When using a band where the Amateur Service is secondary

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Approximately 3 kHz
B	Between 150 and 500 Hz
C	Approximately 6 kHz
D	Approximately 10 kHz

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	The fastest speed at which you are comfortable copying
C	At the standard calling speed of 5 wpm
D	The speed at which the CQ was sent

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

10. - G2E10

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

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

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is improved
B	VHF/UHF ducting is disturbed
C	HF communications are disturbed
D	HF communications are improved

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Check the strength of signals in the MF AM broadcast band
B	Listen for signals from an international beacon in the frequency range you plan to use
C	Send a series of dots on the band and listen for echoes from your signal
D	Check the strength of TV signals from Western Europe

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

Select	Answer
A	The D layer
B	The F2 layer
C	The E layer
D	The F1 layer

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To prevent stations from interfering with one another
B	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
C	To allow time for a warning signal to be sent to other stations
D	To allow the transmitter power regulators to charge properly

15. - G4B15

What type of transmitter performance does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of carrier and undesired sideband for SSB
B	Percentage of frequency modulation
C	Linearity
D	Percentage of carrier phase shift

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Flat braid rather than round wire has been used for the ground wire
B	Insulated wire has been used for the ground wire
C	The ground wire has high impedance on that frequency
D	The ground rod is resonant

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 1 kHz above the edge of the segment
B	At least 3 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 below the edge of the segment

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the battery using heavy gauge wire
B	To the alternator or generator using heavy gauge wire
C	To the alternator or generator using resistor wire
D	To the battery using resistor wire

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Insert a circulator between the two circuits
B	Reduce the power output of the first circuit
C	Increase the power output of the first circuit
D	Insert an LC network between the two circuits

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	2120 watts
C	530 watts
D	1060 watts

21. - G5C12

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

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

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's inductance could make circuit performance unpredictable
B	The resistor could overheat
C	The resistor's internal capacitance would detune the circuit
D	The resistor's tolerance value would not be adequate for such a circuit

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	DB-25
B	RJ-11
C	Octal
D	PL-259

24. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Transformers and transducers
B	Diodes
C	Quartz crystals
D	Capacitors and inductors

25. - G7B03

Which of the following describes the function of a two input AND gate?

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By differential spurious phasing
B	By converting the signal from analog to digital and using digital processing
C	By converting the signal from digital to analog and taking the difference of mixing products
D	By using direct signal phasing

27. - G8A05

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

Select	Answer
A	Phase modulation
B	Amplitude modulation
C	Frequency shift keying
D	Frequency 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	5 kHz
B	8 kHz
C	16 kHz
D	3 kHz

29. - G8C07

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

Select	Answer
A	It sends the packet back to the transmitting station
B	It terminates the contact
C	It requests a change in transmitting protocol
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 decreases
D	Attenuation reaches a maximum at approximately 18 MHz

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 ground reflection losses
D	Lower feed point impedance

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 2/3 as much
B	About twice as much
C	About the same
D	About 1.5 times as much

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Wide bandwidth
B	Higher gain per element than a Yagi antenna
C	Harmonic suppression
D	Polarization diversity

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	All of these choices are correct
B	Post a copy of FCC Part 97.13 in the station
C	Perform a routine RF exposure evaluation
D	Post a copy of OET Bulletin 65 in the station

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable modulation limits
B	RF exposure limits of the human body
C	Acceptable bandwidth limits
D	Electrical safety inside the ham shack