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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Make sure that MPE limits are not exceeded in occupied areas
B	Locate the antenna close to your operating position to minimize feed-line radiation
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Make sure the antenna is properly shielded

2. - G0B11

Which of the following is required for lightning protection ground rods?

Select	Answer
A	They must be bonded to all buried water and gas lines
B	They must be bonded together with all other grounds
C	Lightning grounds must be connected to all ungrounded wiring
D	Bends in ground wires must be made as close as possible to a right angle

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	24900 kHz
B	14250 kHz
C	21300 kHz
D	18155 kHz

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	Only “Q” signals are permitted
B	They may be used if they do not obscure the meaning of a message
C	They are not permitted
D	They are limited to those expressly listed in Part 97 of the FCC rules

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least three Volunteer Examiners of Technician class
B	At least two Volunteer Examiners of Technician class or higher
C	At least three Volunteer Examiners of General class or higher
D	At least two Volunteer Examiners of General class or higher

7. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When under automatic control
B	Under no circumstances
C	When messages are encrypted
D	When messages are not encrypted

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 bandwidth used and greater power efficiency
C	Ease of tuning on receive and immunity to impulse noise
D	Less subject to interference from atmospheric static crashes

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Identify your station by transmitting your call sign at least 3 times
B	All these choices are correct
C	Follow the voluntary band plan
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	No US stations should call
B	Listening only for a specific station or stations
C	Operating full break-in
D	Closing station now

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the angle at which an amateur satellite crosses the equator
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows true bearings and distances from a specific location
D	A map that shows accurate land masses

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Anywhere in the voice portion of the band
B	Approximately 14.110 MHz to 14.113 MHz
C	Anywhere in the CW portion of the band
D	Approximately 14.074 MHz to 14.077 MHz

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve high-latitude HF propagation
B	Degrade high-latitude HF propagation
C	Degrade ground wave propagation
D	Improve ground wave propagation

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	A slightly delayed echo might be heard
C	Signal strength increased by 3 dB
D	The signal might be cancelled causing severe attenuation

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The E region
B	The D region
C	The F2 region
D	The F1 region

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	Received frequency may shift several kHz
B	Received frequency may become unstable
C	Received signals may become distorted
D	CW signals may become severely attenuated

17. - G4B06

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

Select	Answer
A	Higher precision
B	Faster response
C	Less prone to overload
D	Better for measuring computer circuits

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	A ground loop
C	Corrosion of the ground rod
D	Overheating of ground straps

19. - G4D10

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

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

20. - G4E01

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

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

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A Pi-network
B	A length of transmission line
C	A transformer
D	All these choices are correct

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	1500 watts
B	2120 watts
C	530 watts
D	1060 watts

23. - G5C04

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

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

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Tight tolerance
B	High capacitance for a given volume
C	Inexpensive RF capacitor
D	Much less leakage than any other type

25. - G6B08

How is an LED biased when emitting light?

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

26. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	360 degrees
B	180 degrees
C	90 degrees
D	270 degrees

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The time delay of the lag circuit
C	The number of stages in the divider
D	The inductance and capacitance in the tank circuit

28. - G7C02

What output is produced by a balanced modulator?

Select	Answer
A	Audio extracted from the modulation signal
B	Frequency modulated RF
C	Double-sideband modulated RF
D	Audio with equalized frequency response

29. - G8A14

What is link margin?

Select	Answer
A	The opposite of fade margin
B	The difference between received power level and minimum required signal level at the input to the receiver
C	Transmit power minus receiver sensitivity
D	Receiver sensitivity plus 3 dB

30. - G8B13

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

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

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Directory
B	Preamble
C	Header
D	Trailer

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation increases
B	Attenuation decreases
C	Attenuation follows Marconi’s Law of Attenuation
D	Attenuation is independent of frequency

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It peaks at about 1/8 wavelength from the end
B	It steadily increases
C	It is unaffected by the location of the feed point
D	It steadily decreases

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
B	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
C	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
D	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

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