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	30 meters
B	11 meters
C	60 meters
D	12 meters

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
B	All of these choices are correct
C	The FCC must have declared a state of emergency
D	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D04

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

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

5. - G1E05

What types of messages for a third party in another country may be transmitted by an amateur station?

Select	Answer
A	Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief
B	Any message, as long as the amateur operator is not paid
C	Any messages, as long as the text of the message is recorded in the station log
D	Only messages for other licensed amateurs

6. - G2A11

What does the expression "CQ DX" usually indicate?

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

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	QSOs in progress always have priority
B	Except during FCC declared emergencies, no one has priority access to frequencies
C	Contest operations must always yield to non-contest use of frequencies
D	Nets always have priority

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	BK
B	AR
C	KN
D	SK

9. - G2D04

Which of the following describes an azimuthal projection map?

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

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Send a NAK response continuously so that the sending station has to pause
B	Transmit a steady carrier until the PACTOR protocol times out and disconnects
C	Joining an existing contact is not possible, PACTOR connections are limited to two stations
D	Send broadcast packets containing your call sign while in MONITOR mode

11. - G3A13

What does the A-index indicate?

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

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	HF communications over the path are enhanced
B	Double hop propagation along the path is more common
C	Propagation over the path on all HF frequencies is enhanced
D	No HF radio frequency will support ordinary sky-wave communications over the path

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have a wavering sound
B	They have high intelligibility
C	All of these choices are correct
D	They have very large swings in signal strength

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A pronounced dip
B	A slow, rhythmic oscillation
C	A pronounced peak
D	No change will be observed

15. - G4B11

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

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

16. - G4C04

What is the effect on an audio device or telephone system if there is interference from a nearby CW transmitter?

Select	Answer
A	A chirpy CW signal
B	On-and-off humming or clicking
C	A CW signal at a nearly pure audio frequency
D	Severely distorted audio

17. - G4D04

What does an S meter measure?

Select	Answer
A	Transmitter power output
B	Impedance
C	Received signal strength
D	Conductance

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Short antennas are more likely to cause distortion of transmitted signals
B	Operating bandwidth may be very limited
C	Short antennas can only receive circularly polarized signals
D	Harmonic radiation may increase

19. - G5A01

What is impedance?

Select	Answer
A	The force of repulsion between two similar electric fields
B	The electric charge stored by a capacitor
C	The inverse of resistance
D	The opposition to the flow of current in an AC circuit

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	1.414
C	0.707
D	2.00

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	0.30 ohms
B	300 ohms
C	33.3 ohms
D	0.33 ohms

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Lower inductance
B	Higher breakdown voltage
C	Lower capacitance
D	Longer switching times

23. - G6B16

Which of the following describes a type N connector?

Select	Answer
A	An audio connector used in surround-sound installations
B	A small bayonet connector used for data circuits
C	A threaded connector used for hydraulic systems
D	A moisture-resistant RF connector useful to 10 GHz

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 1
B	Symbol 2
C	Symbol 7
D	Symbol 11

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	All of these choices are correct
C	SSB
D	CW

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio in which most major signal processing functions are performed by software
B	A computer model that can simulate performance of a radio to aid in the design process
C	A radio that uses crystal filters designed using software
D	A radio that provides computer interface for automatic logging of band and frequency

27. - G8A01

How is an FSK signal generated?

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

28. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It improves impedance matching of the antenna
B	It results in the best signal to noise ratio
C	It minimizes power consumption in the receiver
D	It is required by FCC rules

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	The checksum overflows
B	Encoding reverts to the default character set
C	The connection is dropped
D	Packets will be routed incorrectly

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	2.5:1
C	1.25:1
D	2:1

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
B	If the antenna is too high, the pattern becomes unpredictable
C	Antenna height has no effect on the pattern
D	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional

32. - G9C15

Approximately how long is each side of the reflector element of a quad antenna?

Select	Answer
A	Slightly less than 1/2 wavelength
B	Slightly more than 1/4 wavelength
C	Slightly more than 1/2 wavelength
D	Slightly less than 1/4 wavelength

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They must be used with an antenna tuner
C	They must be fed with open wire line
D	They present low impedance on all design frequencies

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

35. - G0B11

Which of the following is good practice for lightning protection grounds?

Select	Answer
A	They must be bonded together with all other grounds
B	Lightning grounds must be connected to all ungrounded wiring
C	Bends in ground wires must be made as close as possible to a right angle
D	They must be bonded to all buried water and gas lines

Figure G7-1