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. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	17 meters
C	160 meters
D	12 meters

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Follow generally accepted band plans agreed to by the Amateur Radio community
B	Insure that the frequency and mode selected are within your license class privileges
C	Monitor the frequency before transmitting
D	All of these choices are correct

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1200 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	1000 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 the Technician band segments until your upgrade is posted in the FCC database
B	Only on the Technician band segments until your license arrives in the mail
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. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The frequency coordinator bears primary responsibility to resolve the interference
B	The licensee of the coordinated repeater has primary responsibility to resolve the interference
C	Both repeater licensees share equal responsibility to resolve the interference
D	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Lower sideband is the only sideband legal on these frequency bands
B	Because it is fully compatible with an AM detector
C	Current amateur practice is to use lower sideband on these frequency bands
D	Lower sideband is more efficient than upper sideband at these frequencies

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	A portion of the band that has been voluntarily set aside for digital contacts only
B	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
C	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
D	An FCC rule that allows only digital contacts in that portion of the band

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	100 percent copy
B	Key clicks
C	Chirpy or unstable signal
D	Report was read from an S meter rather than estimated

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Identification of different call signs
B	Identification of out of band operation
C	Direction finding used to locate stations violating FCC Rules
D	Hunters have an opportunity to transmit on non-amateur frequencies

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	LSB
B	DSB
C	USB
D	CW

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	30 meters and 20 meters
B	60 meters and 40 meters
C	15 meters, 12 meters and 10 meters
D	80 meters and 160 meters

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

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

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency above the Maximum Usable Frequency
B	The communication is during a sudden ionospheric disturbance
C	The signal is heard on a frequency below the Maximum Usable Frequency
D	The communication is during a sunspot maximum

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	Antenna coupler or antenna tuner
B	SWR Bridge
C	Balanced modulator
D	Q Multiplier

15. - G4B15

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

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

16. - G4C11

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

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

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases peak power
B	It increases average power
C	It reduces intermodulation distortion
D	It reduces harmonic distortion

18. - G4E05

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

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

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Conductance
B	Reluctance
C	Admittance
D	Reactance

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	1.4 watts
B	100 watts
C	400 watts
D	353.5 watts

21. - G5C10

What is the inductance of three 10 millihenry inductors connected in parallel?

Select	Answer
A	0.30 henrys
B	30 millihenrys
C	3.3 henrys
D	3.3 millihenrys

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

23. - G6B18

What is a type SMA connector?

Select	Answer
A	A small threaded connector suitable for signals up to several GHz
B	A connector designed for serial multiple access signals
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	180 degrees
B	90 degrees
C	270 degrees
D	360 degrees

25. - G7B05

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

Select	Answer
A	6
B	8
C	3
D	16

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	RF oscillator
C	Balanced modulator
D	Product detector

27. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Amplitude modulation
B	Phase modulation
C	Pulse modulation
D	Multiplex 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	16 kHz
B	3 kHz
C	8 kHz
D	5 kHz

29. - G8C07

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

Select	Answer
A	It requests the packet be retransmitted
B	It terminates the contact
C	It requests a change in transmitting protocol
D	It sends the packet back to the transmitting station

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
C	The antenna feed point must be at DC ground potential
D	The feed line must be cut to a length equal to an even number of physical half wavelengths

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. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	There must be an open circuit in the driven element at the point opposite the feed point
B	The driven element must be fed with a balun transformer
C	The reflector element must be approximately 5 percent shorter than the driven element
D	The reflector element must be approximately 5 percent longer than the driven element

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To prevent out of band operation
B	To notch spurious frequencies
C	To provide balanced feed point impedance
D	To permit multiband operation

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	Secure written permission from your neighbors to operate above the controlled MPE limits
D	Take action to prevent human exposure to the excessive RF fields

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty
B	To shut down the unit if it becomes too hot
C	To ensure that dangerous voltages are removed if the cabinet is opened
D	To shut off the power supply if too much voltage is produced