US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A07

Which of the following frequencies is within the General Class portion of the 20-meter phone band?

Select	Answer
A	14005 kHz
B	14405 kHz
C	14305 kHz
D	14105 kHz

2. - G1B09

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

Select	Answer
A	Only when there is no other means of communications readily available
B	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
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	Never

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	200 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
D	1500 watts PEP output

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	Only on the Technician band segments until your license arrives in the mail
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	On any General or Technician Class band segment except 30-meters and 60-meters
D	On any General or Technician Class band segment

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	When messages are not encrypted
C	When under automatic control
D	Under no circumstances

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
C	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
D	Listen for 2 minutes before calling CQ

8. - G2C03

What does it mean when a CW operator sends "KN" at the end of a transmission?

Select	Answer
A	Closing station now
B	Listening only for a specific station or stations
C	Operating full break-in
D	Listening for novice stations

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	You must keep a record of all third party traffic
C	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
D	You must keep a record of the manufacturer of your equipment and the antenna used

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	Below the RTTY segment, near 14.070 MHz
B	At the top of the SSB phone segment, near 14.325 MHz
C	In the middle of the CW segment, near 14.100 MHz
D	At the bottom of the slow-scan TV segment, near 14.230 MHz

11. - G3A09

What effect does a high sunspot number have on radio communications?

Select	Answer
A	Long-distance communication in the upper HF and lower VHF range is enhanced
B	Microwave communications become unstable
C	Frequencies above 300 MHz become usable for long-distance communication
D	High-frequency radio signals become weak and distorted

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24 hour period
B	The Minimum Usable Frequency during a 24 hour period
C	The Minimum Usable Frequency for communications between two points
D	The Maximum Usable Frequency for communications between two points

13. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagations is through ducts in F region which absorb most of the energy
B	Signals are scattered from the magnetosphere which is not a good reflector
C	Propagation is through ground waves which absorb most of the signal energy
D	Only a small part of the signal energy is scattered into the skip zone

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Computer interface for PSK and RTTY operation
C	VOX operation
D	Automatic generation of strings of dots and dashes for CW operation

15. - G4B09

Which of the following can be determined with a field strength meter?

Select	Answer
A	The radiation pattern of an antenna
B	The radiation resistance of an antenna
C	The presence and amount of phase distortion of a transmitter
D	The presence and amount of amplitude distortion of a transmitter

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	A wide range of filter bandwidths and shapes can be created
C	Fewer digital components are required
D	Mixing products are greatly reduced

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 1 kHz below the edge of the segment
B	At least 3 kHz below the edge of the band
C	Your displayed carrier frequency may be set at the edge of the band
D	At least 3 kHz above the edge of the band

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.02 VDC
C	0.5 VDC
D	0.2 VDC

19. - G5A13

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

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

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	173 volts
B	692 volts
C	346 volts
D	245 volts

21. - G5C18

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

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

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	High capacitance for given volume
B	Comparatively low cost
C	Tight tolerance
D	High stability

23. - G6B14

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

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

24. - G7A02

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

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

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To cut off the final amplifier during standby periods
B	To keep the carrier on frequency
C	To eliminate self-oscillations
D	To limit the modulation index

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	Product detector
B	IF filter
C	RF oscillator
D	Balanced modulator

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

Select	Answer
A	Double sideband
B	Phase modulation
C	Single sideband
D	Frequency modulation

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	101.75 Hz
B	5 kHz
C	60 kHz
D	416.7 Hz

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The receiver is busy decoding the packet
B	The entire file has been received correctly
C	The receiver is requesting the packet be retransmitted
D	The receiver is reporting the packet was received without error

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	3:1
B	6:1
C	1.5:1
D	You cannot determine SWR from impedance values

31. - G9B06

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

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

32. - G9C08

What is meant by the "main lobe" of a directive antenna?

Select	Answer
A	The point of maximum current in a radiating antenna element
B	The direction of maximum radiated field strength from the antenna
C	The maximum voltage standing wave point on a radiating element
D	The magnitude of the maximum vertical angle of radiation

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Gain varies logarithmically as a function of frequency
B	Impedance varies periodically as a function of frequency
C	Length and spacing of the elements increase logarithmically from one end of the boom to the other
D	SWR varies periodically as a function of boom length

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should not be installed in a wet area
B	It should be installed such that it is protected against unauthorized access
C	It should not be installed higher than you can reach
D	It should limited to 10 feet in height

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	Current flowing from one or more of the voltage-carrying wires directly to ground
B	Current flowing from one or more of the voltage-carrying wires to the neutral wire
C	Overvoltage on the voltage-carrying wires
D	All of these choices are correct