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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	3560 kHz
B	1855 kHz
C	2560 kHz
D	3650 kHz

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	50 feet
B	100 feet
C	300 feet
D	200 feet

3. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	A special identifier is not required as long as your General Class license application has been filed with the FCC
B	Whenever you operate on any amateur frequency
C	Whenever you operate using Technician frequency privileges
D	Whenever you operate using General Class frequency privileges

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party's amateur license has been revoked and not reinstated
B	The third party is speaking in a language other than English
C	The third party is not a U.S. citizen
D	The third party is a licensed amateur

6. - G2A05

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

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

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. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	BK
B	KN
C	AR
D	SK

9. - G2D10

What is QRP operation?

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

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3570 - 3600 kHz
B	3775 - 3825 kHz
C	3500 - 3525 kHz
D	3700 - 3750 kHz

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
B	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
C	All of these choices are correct.
D	A zero sunspot number indicate radio propagation is not possible on any band

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Severe attenuation of signals on the 10-meter band
B	Long skip sky-wave propagation on the 10-meter band
C	Long delayed echoes on the 10-meter band
D	Short skip sky-wave propagation on the 10-meter band

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

14. - G4A08

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

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

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Faster response
B	Better for RF measurements
C	Better for measuring computer circuits
D	Better precision for most uses

16. - G4C13

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

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

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 4 times
B	Approximately 1.5 times
C	Approximately 8 times
D	Approximately 2 times

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
B	The socket is not wired with an RF-shielded power cable
C	The socket's wiring may be inadequate for the current drawn by the transceiver
D	Drawing more than 50 watts from this socket could cause the engine to overheat

19. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Ampere
C	Farad
D	Siemens

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	400 watts
B	353.5 watts
C	100 watts
D	1.4 watts

21. - G5C09

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

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

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's internal capacitance would detune the circuit
B	The resistor could overheat
C	The resistor's tolerance value would not be adequate for such a circuit
D	The resistor's inductance could make circuit performance unpredictable

23. - G6B16

Which of the following describes a type N connector?

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

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 11
C	Symbol 1
D	Symbol 2

25. - G7B02

Which of the following is an advantage of using the binary system when processing digital signals?

Select	Answer
A	Binary numbers are more compatible with analog circuitry
B	Binary "ones" and "zeros" are easy to represent by an "on" or "off" state
C	The binary number system is most accurate
D	All of these choices are correct

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	IF amplifier
B	Balanced modulator
C	Mixer
D	Detector

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	Signal distortion caused by excessive drive
B	The transmitter's automatic level control (ALC) is properly adjusted
C	Signal distortion caused by insufficient collector current
D	The transmitter's carrier is properly suppressed

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	31.5 Hz
B	2300 Hz
C	500 Hz
D	1800 Hz

29. - G8C08

Which of the following statements is true about PSK31?

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

30. - G9A02

What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

Select	Answer
A	80 and 100 ohms
B	500 and 750 ohms
C	50 and 75 ohms
D	25 and 30 ohms

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

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 isotropic antenna, dBd refers to a dipole antenna
C	dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna
D	dBi refers to an isometric antenna, dBd refers to a discone antenna

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They present low impedance on all design frequencies
B	They must be used with an antenna tuner
C	They have poor harmonic rejection
D	They must be fed with open wire line

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	By calculation based on computer modeling
C	All of these choices are correct
D	By calculation based on FCC OET Bulletin 65

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of engine over torque
B	Lack of nitrogen for adequate combustion
C	Danger of carbon monoxide poisoning
D	Lack of oxygen for adequate combustion

Figure G7-1