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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
B	All these choices are correct
C	Post a copy of FCC Part 97.13 in the station
D	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	Make sure all circuits that supply power to the tower are locked out and tagged
B	Unground the base of the tower
C	All these choices are correct
D	Notify the electric company that a person will be working on the tower

3. - G1A10

What portion of the 10-meter band is available for repeater use?

Select	Answer
A	The entire band
B	The portion between 28.3 MHz and 28.5 MHz
C	The portion above 29.5 MHz
D	The portion between 28.1 MHz and 28.2 MHz

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Automatic identification of repeaters
B	Transmission of bulletins of general interest to amateur radio licensees
C	Observation of propagation and reception
D	All these choices are correct

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1500 watts PEP output
B	200 watts PEP output
C	1000 watts PEP output
D	1200 watts PEP output

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	16 years
B	18 years
C	21 years
D	There is no age limit

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
B	Only during an FCC-declared general state of communications emergency
C	Under no circumstances
D	Only if the 10-meter repeater control operator holds at least a General class license

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

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

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response
B	Listen for 2 minutes before calling CQ
C	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
D	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 10 wpm
B	At the standard calling speed of 5 wpm
C	The fastest speed at which you are comfortable copying, but no faster than the CQ
D	The fastest speed at which you are comfortable copying, but no slower than the CQ

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
B	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
C	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
D	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary

12. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	All these choices are correct
B	You may have selected the wrong baud rate
C	The mark and space frequencies may be reversed
D	You may be listening on the wrong sideband

13. - G3A13

What does the A-index measure?

Select	Answer
A	The solar radio flux at Boulder, Colorado
B	The relative position of sunspots on the surface of the Sun
C	The long-term stability of Earth’s geomagnetic field
D	The amount of polarization of the Sun’s electric field

14. - G3B07

What does LUF stand for?

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

15. - G3C02

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

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

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To prevent receiver overload from 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 reduce excessive audio level on strong signals

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Received power that interferes with SWR readings
B	Generation of harmonics which interfere with frequency readings
C	All these choices are correct
D	Desensitization which can cause intermodulation products which interfere with impedance readings

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	A soldered joint will likely be destroyed by the heat of a lightning strike
B	Solder flux will prevent a low conductivity connection
C	Solder has too high a dielectric constant to provide adequate lightning protection
D	All these choices are correct

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz below the edge of the band
B	At least 1 kHz below the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 3 kHz above the edge of the band

20. - G4E01

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

Select	Answer
A	To electrically lengthen a physically short antenna
B	To lower the radiation angle
C	To reduce radiation resistance
D	To increase the power handling capacity of a whip antenna

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Current and voltage are equal
B	Resistance is cancelled
C	Inductive reactance and capacitive reactance cancel
D	The circuit radiates all its energy in the form of radio waves

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The RMS value
B	The peak-to-peak value
C	The reciprocal of the RMS value
D	The peak value

23. - G5C04

What is the approximate total resistance of a 100- and a 200-ohm resistor in parallel?

Select	Answer
A	300 ohms
B	150 ohms
C	67 ohms
D	75 ohms

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Enhancement and depletion modes
B	The active region (between cutoff and saturation)
C	Saturation and cutoff
D	Peak and valley current points

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	4 GHz
B	500 MHz
C	50 MHz
D	40 GHz

26. - G7A01

What is the function of a power supply bleeder resistor?

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Add the RF input power to the DC output power
B	Multiply the RF input power by the reciprocal of the RF output power
C	Divide the RF output power by the DC input power
D	Divide the DC input power by the DC output power

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Pure sine wave output
B	Extremely narrow tuning range
C	Relatively high-power output
D	Variable output frequency with the stability of a crystal oscillator

29. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	5F1-3F2
B	All these choices are correct
C	2F1-F2
D	3F1-F2

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Binary
B	Viterbi
C	Volumetric
D	Varicode

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	5:1
B	Between 1:1 and 5:1 depending on the characteristic impedance of the line
C	1:1
D	Between 1:1 and 5:1 depending on the reflected power at the transmitter

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	11 feet
B	21 feet
C	16 feet
D	8 feet

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	3/4 wavelength
B	1/2 wavelength
C	1 wavelength
D	1/4 wavelength

35. - G9D04

What is the primary function of antenna traps?

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