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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	Take action to prevent human exposure to the excessive RF fields
D	All these choices are correct

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	Where the feed lines enter the building
B	On the antenna, opposite the feed point
C	In series with each ground lead
D	At the closest power pole ground electrode

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

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

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	Observation of propagation and reception
C	All these choices are correct
D	Transmission of bulletins of general interest to amateur radio licensees

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Obtain an experimental license from the FCC
B	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
C	Type-certify equipment to FCC standards
D	Publicly document the technical characteristics of the protocol

6. - G1D06

Until an upgrade to General class is shown in the FCC database, when must a Technician licensee identify with “AG” after their call sign?

Select	Answer
A	Whenever they operate using General class frequency privileges
B	A special identifier is not required if their General class license application has been filed with the FCC
C	Whenever they operate on any amateur frequency
D	Whenever they operate using Technician frequency privileges

7. - G1E01

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

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B	The third party’s amateur license has been revoked and not reinstated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

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

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

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

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Operating split to avoid interference on frequency
B	Matching the transmit frequency to the frequency of a received signal
C	Sending without error
D	Matching the speed of the transmitting station

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Toward the rising sun
B	Along the gray line
C	180 degrees from the station’s short-path heading
D	Toward the north

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

13. - 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 Earth
B	A count of sunspots that is adjusted for solar emissions
C	A measure of solar radiation with a wavelength of 10.7 centimeters
D	Another name for the American sunspot number

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

Select	Answer
A	12,000 miles
B	2,500 miles
C	180 miles
D	1,200 miles

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric region involved is unstable
B	The E region is not present
C	Energy is scattered into the skip zone through several different paths
D	Ground waves are absorbing much of the signal

16. - G4A10

What is the function of an electronic keyer?

Select	Answer
A	Automatic generation of dots and dashes for CW operation
B	Computer interface for PSK and RTTY operation
C	Automatic transmit/receive switching
D	To allow time for switching the antenna from the receiver to the transmitter

17. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	Complex impedances can be easily measured
B	Greater precision
C	Complex waveforms can be measured
D	An oscilloscope uses less power

18. - G4C07

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

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

19. - G4D06

How much change in signal strength is typically represented by one S unit?

Select	Answer
A	6 dB
B	18 dB
C	12 dB
D	15 dB

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Short antennas are more likely to cause distortion of transmitted signals
B	Operating bandwidth may be very limited
C	Q of the antenna will be very low
D	Harmonic radiation may increase

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Susceptance
B	Conductance
C	Reluctance
D	Admittance

22. - G5B09

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

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

23. - G5C12

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

Select	Answer
A	14.3 microfarads
B	0.07 microfarads
C	70 microfarads
D	1,000 microfarads

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	10.5 volts
B	6 volts
C	8.5 volts
D	12 volts

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	In the tunnel-effect region
B	Reverse biased
C	Forward biased
D	At the Zener voltage

26. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 11
B	Symbol 5
C	Symbol 1
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	A filter and an amplifier operating in a feedback loop
C	An amplifier and a divider
D	A circulator and a filter operating in a feed-forward loop

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in a single sideband receiver to extract the modulated signal
B	Used in an FM receiver to filter out unwanted sidebands
C	Used in transmitter to perform frequency multiplication
D	Used in test gear to detect spurious mixing products

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	8-bit direct sequence spread spectrum
B	8-tone frequency shift keying
C	Amplitude compressed AM
D	Vestigial sideband

30. - 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	60 kHz
C	101.75 Hz
D	416.7 Hz

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	The checksum overflows
B	The connection is dropped
C	Packets will be routed incorrectly
D	Encoding reverts to the default character set

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The feed line must be an even number of physical half wavelengths long
D	The antenna feed point must be at DC ground potential

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight at right angles to the antenna
B	It has a pair of lobes on one side of the antenna and a single lobe on the other side
C	It is a circle (equal radiation in all directions)
D	It is a figure-eight off both ends of the antenna

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 9 dB higher
B	Approximately 1.5 dB higher
C	Approximately 3 dB higher
D	Approximately 6 dB higher

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Approximately 50 ohms
B	Approximately 300 ohms
C	Very low
D	Very high

Figure G7-1