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

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

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1. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The total RF exposure averaged over a certain period
B	The total time of the exposure
C	The average amount of power developed by the transmitter over a specific 24-hour period
D	The average time it takes RF radiation to have any long-term effect on the body

2. - G0B08

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

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

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	60 meters
B	30 meters
C	11 meters
D	12 meters

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	No more than one beacon station may transmit in the same band from the same station location
B	The frequency must be coordinated with the National Beacon Organization
C	All these choices are correct
D	The frequency must be posted on the internet or published in a national periodical

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	None, only Amateur Extra class licensees may be accredited
B	General and Technician
C	Technician only
D	Amateur Extra, General, and Technician

7. - G1E01

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

Select	Answer
A	All these choices are correct
B	The third party’s amateur license has been revoked and not reinstated
C	The third party is not a US citizen
D	The third party is speaking in a language other than English

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
C	SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC-issued amateur operator license or an appropriate government official
B	Any control operator when normal communication systems are operational
C	Only a person holding an FCC-issued amateur operator license
D	Only a RACES net control operator

10. - G2C09

What does the Q signal “QSL” mean?

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

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international contacts
B	To help with a reply if the FCC requests information about your station
C	The FCC requires a log of all international third-party traffic
D	The log provides evidence of operation needed to renew a license without retest

12. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Transmit a steady carrier until the PACTOR protocol times out and disconnects
B	Send broadcast packets containing your call sign while in MONITOR mode
C	Send a NAK code
D	Joining an existing contact is not possible, PACTOR connections are limited to two stations

13. - G3A05

What is the solar flux index?

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

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They are refracted back to Earth
C	They pass through the ionosphere
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

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

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	All these choices are correct
B	Reduce the power dissipation in the feedline to the antenna
C	Reduce the SWR in the feed line to the antenna
D	Increase power transfer from the transmitter to the feed line

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When adjusting circuits for maximum or minimum values
B	When measuring the frequency of an oscillator
C	When testing logic circuits
D	When high precision is desired

18. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Ground the center conductor of the audio cable causing the interference
B	Connect the center conductor to the shield of all cables to short circuit the RFI signal
C	Place a ferrite choke on the cable
D	Add an additional insulating jacket to the cable

19. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Carrier suppression
C	Received signal strength
D	Transmitter power output

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce RF voltage discharge from the tip of the antenna while transmitting
B	To narrow the operating bandwidth of the antenna
C	To increase the “Q” of the antenna
D	To reduce the chance of damage if the antenna should strike an object

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	X
B	Y
C	B
D	Z

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	12 volts
B	8.5 volts
C	34 volts
D	24 volts

23. - G5C14

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

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

24. - G6A07

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

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

25. - G6B11

What is an SMA connector?

Select	Answer
A	A type of push-on connector intended for high-voltage applications
B	A connector designed for serial multiple access signals
C	A small threaded connector suitable for signals up to several GHz
D	A type-S to type-M adaptor

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 2
B	Symbol 1
C	Symbol 5
D	Symbol 4

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A frequency multiplier and a mixer
B	An amplifier and a divider
C	A circulator and a filter operating in a feed-forward loop
D	A filter and an amplifier operating in a feedback loop

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	A wide range of filter bandwidths and shapes can be created
B	The DSP filter is much more effective at VHF frequencies
C	Mixing products are greatly reduced
D	Fewer digital components are required

29. - G8A13

What is a link budget?

Select	Answer
A	The difference between transmit power and receiver sensitivity
B	The sum of antenna gains minus system losses
C	The sum of transmit power and antenna gains minus system losses as seen at the receiver
D	The financial costs associated with operating a radio link

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

Select	Answer
A	Detection
B	Heterodyning
C	Intermodulation
D	Rolloff

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By controlling transmitter output power for optimum signal strength
B	By using a parity bit with each character
C	By using the Varicode character set
D	By transmitting redundant information with the data

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss reduces SWR measured at the input to the line
B	Higher loss increases SWR measured at the input to the line
C	Transmission line loss does not affect the SWR measurement
D	Higher loss increases the accuracy of SWR measured at the input to the line

33. - G9B10

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

Select	Answer
A	24 feet
B	8 feet
C	33 feet
D	16 feet

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The maximum voltage standing wave point on a radiating element
C	The point of maximum current in a radiating antenna element
D	The direction of maximum radiated field strength from the antenna

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By deploying a capacitance hat
B	By varying its body capacitance
C	By extending and retracting the whip
D	By varying the base loading inductance

Figure G7-1