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

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	100 feet
B	300 feet
C	200 feet
D	50 feet

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must pass the current element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	There are no requirements other than being able to show a copy of the expired license
D	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address

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

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC issued amateur operator license or an appropriate government official
B	Only a RACES net control operator
C	Only a person holding an FCC issued amateur operator license
D	Any control operator when normal communication systems are operational

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	You are sending too fast
B	There is interference on the frequency
C	I am ready to receive messages
D	I am quitting for the day

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	An isotropic antenna
B	A directional antenna
C	An omnidirectional antenna
D	A quarter-wave vertical antenna

10. - G2E10

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

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

11. - G3A01

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

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

12. - G3B10

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?

Select	Answer
A	12,000 miles
B	2,500 miles
C	180 miles
D	1,200 miles

13. - G3C07

What makes HF scatter signals often sound distorted?

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

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	Improper action of ALC distorts the signal and can cause spurious emissions
B	ALC will invert the modulation of the AFSK mode
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	All of these choices are correct

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	Linearity
C	Percentage of frequency modulation
D	Percentage of carrier phase shift

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To increase antenna bandwidth
B	To remove noise from received signals
C	To provide adequate grounding
D	To increase antenna gain

17. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 to 7.184 MHz
B	7.178 to 7.181 MHz
C	7.1765 to 7.1795 MHz
D	7.175 to 7.178 MHz

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	Drawing more than 50 watts from this socket could cause the engine to overheat
B	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
C	The socket's wiring may be inadequate for the current drawn by the transceiver
D	The socket is not wired with an RF-shielded power cable

19. - G5A13

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

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

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	530 watts
B	2120 watts
C	1500 watts
D	1060 watts

21. - G5C15

What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	10000 ohms
C	0.17 ohms
D	80 ohms

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Screen Grid
B	Heater
C	Trigger electrode
D	Control grid

23. - G6B05

What is meant when memory is characterized as non-volatile?

Select	Answer
A	It is resistant to radiation damage
B	The stored information cannot be changed once written
C	It is resistant to high temperatures
D	The stored information is maintained even if power is removed

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	Equal to the normal output voltage of the power supply
C	One-half the normal output voltage of the power supply
D	One-half the normal peak output voltage of the power supply

25. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	16
B	8
C	3
D	6

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	Product detector
C	RF oscillator
D	Balanced modulator

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 conversion
B	Frequency convolution
C	Frequency modulation
D	Frequency transformation

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	16 kHz
C	3 kHz
D	5 kHz

29. - G8C01

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

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

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	16 feet
C	32 feet
D	8 feet

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

Select	Answer
A	Approximately 3 dB higher
B	Approximately 1.5 dB higher
C	Approximately 9 dB higher
D	Approximately 6 dB higher

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

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

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	100 amperes
B	30 amperes
C	15 amperes
D	60 amperes