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	14005 kHz
B	14405 kHz
C	14305 kHz
D	14105 kHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

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

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	19.6 kilobaud
D	1200 baud

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	Extra, General and Technician
B	Technician only
C	General and Technician
D	General only

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 messages, as long as the text of the message is recorded in the station log
C	Only messages for other licensed amateurs
D	Any message, as long as the amateur operator is not paid

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

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

7. - G2B11

What frequency should be used to send a distress call?

Select	Answer
A	Only frequencies used by police, fire or emergency medical services
B	Only frequencies that are within your operating privileges
C	Only frequencies authorized for RACES or ARES stations
D	Whichever frequency has the best chance of communicating the distress message

8. - G2C11

What does the Q signal "QRV" mean?

Select	Answer
A	There is interference on the frequency
B	You are sending too fast
C	I am ready to receive messages
D	I am quitting for the day

9. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Traffic relay procedure net operation
C	Low power transmit operation
D	Transmission using Quick Response Protocol

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	DSB
B	LSB
C	USB
D	SSB

11. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
B	A count of sunspots which is adjusted for solar emissions
C	A measure of solar radiation at 10.7 centimeters wavelength
D	Another name for the American sunspot number

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. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Propagation near the MUF
B	Long path HF propagation at sunrise and sunset
C	Double hop propagation near the LUF
D	Short distance MF or HF propagation using high elevation angles

14. - G4A08

What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?

Select	Answer
A	Highest plate voltage while minimizing grid current
B	Maximum power output without exceeding maximum allowable plate current
C	Minimum plate current without exceeding maximum allowable grid current
D	Minimum SWR on the antenna

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The attenuated RF output of the transmitter
B	An external RF oscillator
C	The local oscillator of the transmitter
D	The transmitter balanced mixer output

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	Balanced mixing
B	A Digital Signal Processor (DSP) filter
C	Bandpass tuning
D	A noise limiter

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 reduces harmonic distortion
C	It reduces intermodulation distortion
D	It increases average power

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow automatic band changing
B	To electrically lengthen a physically short antenna
C	To allow remote tuning
D	To increase the power handling capacity of a whip antenna

19. - G5A13

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

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

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1060 watts
B	2120 watts
C	530 watts
D	1500 watts

21. - G5C09

What is the capacitance of three 100 microfarad capacitors connected in series?

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

22. - G6A08

Why must the cases of some large power transistors be insulated from ground?

Select	Answer
A	To increase the beta of the transistor
B	To avoid shorting the collector or drain voltage to ground
C	To reduce stray capacitance
D	To improve the power dissipation capability

23. - G6B16

Which of the following describes a type N connector?

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

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 7
D	Symbol 6

25. - G7B04

Which of the following describes the function of a two input NOR gate?

Select	Answer
A	Output is low when either or both inputs are high
B	Output is low only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is high only when both inputs are high

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 radio that provides computer interface for automatic logging of band and frequency
C	A radio that uses crystal filters designed using software
D	A computer model that can simulate performance of a radio to aid in the design process

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Excessive bandwidth
C	Insufficient bandwidth
D	Frequency drift

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	5 kHz
B	101.75 Hz
C	60 kHz
D	416.7 Hz

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Varicode Error Correction is used to ensure accurate message reception
B	Upper case letters make the signal stronger
C	Upper case letters use longer Varicode signals and thus slow down transmission
D	Higher power is needed as compared to RTTY for similar error rates

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	You cannot determine SWR from impedance values
C	6:1
D	1.5:1

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	8 feet
B	16 feet
C	24 feet
D	32 feet

32. - G9C10

Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?

Select	Answer
A	The physical length of the boom
B	The spacing of each element along the boom
C	All of these choices are correct
D	The number of elements on the boom

33. - G9D02

Which of the following is an advantage of an NVIS antenna?

Select	Answer
A	High forward gain
B	All of these choices are correct
C	Low vertical angle radiation for working stations out to ranges of several thousand kilometers
D	High vertical angle radiation for working stations within a radius of a few hundred kilometers

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Turn off the transmitter and disconnect the feed line
B	Wear a radiation badge
C	All of these choices are correct
D	Ensure that you and the antenna structure are grounded

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

Figure G7-1