US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
B	Contact the FCC for permission to transmit
C	Use an FCC-approved band-pass filter
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	As close to the station equipment as possible
B	Outside the building
C	Parallel to the water supply line
D	Next to the closest power pole

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	80 meters, 40 meters, 20 meters, and 15 meters
B	All HF bands except 160 meters and 10 meters
C	60 meters, 30 meters, 17 meters, and 12 meters
D	All HF bands

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Unidentified transmissions of less than 10 seconds duration for test purposes only
B	Automatic retransmission of other amateur signals by any amateur station
C	Encrypted messages, if not intended to facilitate a criminal act
D	Occasional retransmission of weather and propagation forecast information from US government stations

5. - G1C05

What is the limit for 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

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment except 30 meters and 60 meters
B	Only on the Technician band segments until you have a receipt for the FCC application fee payment
C	On any General or Technician class band segment
D	Only the Technician band segments until your upgrade is posted in the FCC database

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 2
B	Region 4
C	Region 1
D	Region 3

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Very high-fidelity voice modulation
B	Less subject to interference from atmospheric static crashes
C	Less bandwidth used and greater power efficiency
D	Ease of tuning on receive and immunity to impulse noise

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per week
B	No more than 1 hour per week
C	No more than 1 hour per month
D	No more than 2 hours per month

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	Send slower
B	We have worked before
C	I have received and understood
D	We have already confirmed the contact

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	Submit a log to the contest sponsor
B	Send a QSL card to the stations worked, or QSL via Logbook of The World
C	All these choices are correct
D	Identify your station according to normal FCC regulations

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	425 Hz
B	85 Hz
C	170 Hz
D	850 Hz

13. - G3A04

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

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

14. - G3B07

What does LUF stand for?

Select	Answer
A	Lowest Usable Frequency for communications to any point outside a 100-mile radius
B	Lowest Usable Frequency during the past 60 minutes
C	The Lowest Usable Frequency for communications between two specific points
D	The Lowest Usable Frequency during a 24-hour period

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The frequency at which the signal-to-noise ratio approaches unity
B	The highest frequency which is refracted back to Earth
C	The lowest frequency which is refracted back to Earth
D	The frequency at which the signal-to-noise ratio is 6 dB

16. - G4A09

What is the purpose of delaying RF output after activating a transmitter’s keying line to an external amplifier?

Select	Answer
A	To allow time for the amplifier to switch the antenna between the transceiver and the amplifier output
B	To allow time for the amplifier power supply to reach operating level
C	To prevent transient overmodulation
D	To prevent key clicks on CW

17. - 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	An external RF oscillator
B	The local oscillator of the transmitter
C	The attenuated RF output of the transmitter
D	The transmitter balanced mixer output

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	You receive reports of “hum” on your station’s transmitted signal
B	You receive reports of harmonic interference from your station
C	An item of station equipment starts to draw excessive amounts of current
D	The SWR reading for one or more antennas is suddenly very high

19. - 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	7.175 MHz to 7.178 MHz
B	7.178 MHz to 7.184 MHz
C	7.178 MHz to 7.181 MHz
D	7.1765 MHz to 7.1795 MHz

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.02 VDC
C	0.5 VDC
D	0.2 VDC

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of voltage to current
B	The ratio of current to voltage
C	The product of current and voltage
D	The product of current and reactance

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	245 volts
B	692 volts
C	346 volts
D	173 volts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	An inductor in series
B	A capacitor in parallel
C	An inductor in parallel
D	A capacitor in series

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Suppressor grid
B	Control grid
C	Screen grid
D	Trigger electrode

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Metal Monolayer Integrated Circuit
B	Monolithic Microwave Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Multi-Mode Integrated Circuit

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It eliminates ground loop current
B	It discharges the filter capacitors when power is removed
C	It acts as a fuse for excess voltage
D	It removes shock hazards from the induction coils

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class B
B	Class AB
C	Class A
D	Class C

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	Input amplifier noise figure
B	Demodulator stage bandwidth
C	All these choices are correct
D	Input amplifier gain

29. - G8A01

How is direct binary FSK modulation generated?

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

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The arithmetic product
B	The average
C	The ratio
D	The sum and difference

31. - G8C02

Which digital mode is used as a low-power beacon for assessing HF propagation?

Select	Answer
A	MFSK16
B	PSK31
C	SSB-SC
D	WSPR

32. - G9A03

What is the nominal characteristic impedance of “window line” transmission line?

Select	Answer
A	50 ohms
B	100 ohms
C	75 ohms
D	450 ohms

33. - G9B11

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

Select	Answer
A	132 feet
B	263 feet
C	42 feet
D	84 feet

34. - G9C09

In free space, how does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

Select	Answer
A	Approximately 3 dB higher
B	Approximately 1.5 dB higher
C	Approximately 6 dB higher
D	Approximately 9 dB higher

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Portable direction finding at higher HF frequencies
B	Portable direction finding at lower HF frequencies
C	Directional receiving for MF and low HF bands
D	Directional transmitting for low HF bands