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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 1
B	All three regions
C	Region 2
D	Region 3

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only with Special Temporary Authorization from the FCC
B	Only when the information is of a routine, personal nature
C	To control a space station
D	During a declared communications emergency

3. - G1C11

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

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who can demonstrate that they once held an FCC issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
B	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years

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

6. - G2A03

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

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

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they seize your equipment for use in disaster communications
B	When they declare a temporary state of communication emergency
C	When the President's War Emergency Powers have been invoked
D	Only when all amateur stations are instructed to stop transmitting

8. - G2C06

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

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

9. - G2D11

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

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

10. - G2E08

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

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Auroras that can reflect VHF signals
B	Higher signal strength for HF signals passing through the polar regions
C	Improved HF long path propagation
D	Reduced long delayed echoes

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

13. - G3C08

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

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

14. - G4A01

What is the purpose of the "notch filter" found on many HF transceivers?

Select	Answer
A	To reduce interference from carriers in the receiver passband
B	To enhance the reception of a specific frequency on a crowded band
C	To restrict the transmitter voice bandwidth
D	To eliminate receiver interference from impulse noise sources

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Antenna front-to-back ratio
B	RF interference
C	Radio wave propagation
D	Standing wave ratio

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Bypass capacitor
C	Bypass inductor
D	Reverse-biased diode

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 7.181 MHz
B	7.175 to 7.178 MHz
C	7.178 to 7.184 MHz
D	7.1765 to 7.1795 MHz

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	The antenna system
B	"Picket Fencing" signal variation
C	The wire gauge of the DC power line to the transceiver
D	FCC rules limiting mobile output power on the 75-meter band

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Ohm
C	Siemens
D	Ampere

20. - G5B11

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

Select	Answer
A	2.00
B	1.414
C	0.707
D	1.00

21. - G5C18

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

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

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A field effect transistor
B	A varistor
C	A tunnel diode
D	A bipolar transistor

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A connector designed for serial multiple access signals
B	A small threaded connector suitable for signals up to several GHz
C	A large bayonet connector usable at power levels in excess of 1 KW
D	A type of push-on connector intended for high voltage applications

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	90 degrees
B	360 degrees
C	270 degrees
D	180 degrees

25. - G7B06

What is a shift register?

Select	Answer
A	A digital mixer
B	An analog mixer
C	A clocked array of circuits that passes data in steps along the array
D	An array of operational amplifiers used for tri-state arithmetic operations

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	A digital to analog converter
C	All of the these choices are correct
D	A digital processor chip

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To allow time for the other station to break in during a transmission
B	All of these choices are correct
C	Some modes have high duty cycles which could exceed the transmitter's average power rating.
D	To aid in tuning your transmitter

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 5-bit code with additional start and stop bits
B	A code using SELCAL and LISTEN
C	A code using error detection and correction
D	A 7-bit code with start, stop and parity bits

30. - G9A09

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?

Select	Answer
A	4:1
B	1:2
C	1:4
D	2:1

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	131 feet
B	84 feet
C	263 feet
D	42 feet

32. - G9C20

What is meant by the terms dBi and dBd when referring to antenna gain?

Select	Answer
A	dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna
B	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
C	dBi refers to an isometric antenna, dBd refers to a discone antenna
D	dBi refers to an isotropic antenna, dBd refers to a dipole antenna

33. - G9D07

Which of the following describes a log periodic antenna?

Select	Answer
A	Length and spacing of the elements increase logarithmically from one end of the boom to the other
B	Gain varies logarithmically as a function of frequency
C	Impedance varies periodically as a function of frequency
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 not be installed higher than you can reach
C	It should limited to 10 feet in height
D	It should be installed such that it is protected against unauthorized access

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	Notify the electric company that a person will be working on the tower
B	Unground the base of the tower
C	All of these choices are correct
D	Make sure all circuits that supply power to the tower are locked out and tagged