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. - G1A07

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

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

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be coordinated with the National Beacon Organization
B	The frequency must be posted on the Internet or published in a national periodical
C	A beacon station may not use automatic control
D	There must be no more than one beacon signal transmitting in the same band from the same station location

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	100 watts PEP output
B	2000 watts PEP output
C	1000 watts PEP output
D	1500 watts PEP output

4. - G1D01

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

Select	Answer
A	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
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	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
D	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

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	No third party traffic maybe be transmitted
C	The station initiating the contact must be under local or remote control
D	The control operator of the interrogating station must hold an Extra Class license

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	3 to 6 kHz
B	5 to 50 Hz
C	1 to 3 kHz
D	150 to 500 Hz

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you operating full break-in" or "Can you operate full break-in?"
B	"Are you listening only for a specific station?"
C	"Are you busy?", or "Is this frequency in use?"
D	"Will you keep the frequency clear?"

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

10. - G2E13

Which communication system sometimes uses the Internet to transfer messages?

Select	Answer
A	Winlink
B	RTTY
C	ARES
D	Skywarn

11. - G3A04

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

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

12. - G3B08

What does MUF stand for?

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

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

14. - G4A13

What is one reason to use the attenuator function that is present on many HF transceivers?

Select	Answer
A	To reduce signal overload due to strong incoming signals
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce power consumption when operating from batteries
D	To slow down received CW signals for better copy

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Complex impedances can be easily measured
B	Complex waveforms can be measured
C	An oscilloscope uses less power
D	Input impedance is much lower

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Not using a balun or line isolator to feed balanced antennas
B	Arcing at a poor electrical connection
C	Lack of rectification of the transmitter's signal in power conductors
D	Using a balun to feed an unbalanced antenna

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

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

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using resistor wire
B	To the alternator or generator using heavy gauge wire
C	To the battery using resistor wire
D	To the battery using heavy gauge wire

19. - G5A08

Why is impedance matching important?

Select	Answer
A	To ensure that there is less resistance than reactance in the circuit
B	To ensure that the resistance and reactance in the circuit are equal
C	So the load will draw minimum power from the source
D	So the source can deliver maximum power to the load

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 2 dB
B	Approximately 3 dB
C	Approximately 12 dB
D	Approximately 6 dB

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 millihenrys
D	3.3 henrys

22. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?

Select	Answer
A	6 volts
B	8.5 volts
C	10.5 volts
D	12 volts

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	Microprocessor
B	NAND Gate
C	Linear voltage regulator
D	Frequency Counter

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A steady DC voltage
B	A series of DC pulses at twice the frequency of the AC input
C	A series of DC pulses at the same frequency as the AC input
D	A sine wave at half the frequency of the AC input

25. - G7B05

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

Select	Answer
A	3
B	8
C	6
D	16

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Substantially lower
B	Substantially higher
C	About the same
D	Twice the transmission line impedance

27. - G8A01

How is an FSK signal generated?

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

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	60 kHz
B	416.7 Hz
C	5 kHz
D	101.75 Hz

29. - G8C01

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

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

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

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It stays the same
B	It increases
C	It decreases
D	It reaches a maximum at an angle of 45 degrees

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To increase the front-to-back ratio
B	To match the relatively high feed point impedance to 50 ohms
C	To match the relatively low feed point impedance to 50 ohms
D	To increase the main lobe gain

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A broad-band mobile antenna
B	A helical antenna for space reception
C	A very long and low directional receiving antenna
D	A vertical antenna

34. - G0A06

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

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

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable modulation limits
B	Acceptable bandwidth limits
C	RF exposure limits of the human body
D	Electrical safety inside the ham shack