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

2. - G0B04

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

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

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	160 meters
C	12 meters
D	17 meters

4. - G1B07

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

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

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	56 kilobaud
B	300 baud
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	Technician only
B	Amateur Extra, General, and Technician
C	General and Technician
D	None, only Amateur Extra class licensees may be accredited

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	1500 watts
B	10 watts
C	100 milliwatts
D	100 watts

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Single phase modulation
B	Single sideband
C	Frequency modulation
D	Double sideband

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Switch to the opposite sideband
B	Advise the interfering stations that you are on the frequency and that you have priority
C	Decrease power and continue to transmit
D	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	You are sending too fast
B	I am ready to receive
C	There is interference on the frequency
D	I am quitting for the day

11. - G2D09

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

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

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	All these choices are correct
B	Long pauses in message transmission
C	Failure to establish a connection between stations
D	Frequent retries or timeouts

13. - G3A12

What does the K-index measure?

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

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Path distance and location
B	All these choices are correct
C	Time of day and season
D	Solar radiation and ionospheric disturbances

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region is unstable during daylight hours
B	The D region absorbs signals at these frequencies during daylight hours
C	The E region is unstable during daylight hours
D	The F region absorbs signals at these frequencies during daylight hours

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

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Percentage of suppression of the carrier and undesired sideband for SSB
B	Percentage of frequency modulation
C	Percentage of carrier phase shift
D	Linearity

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Bond equipment enclosures together
B	Connect all ground conductors in series
C	Avoid using lock washers and star washers when making ground connections
D	Connect the AC neutral conductor to the ground wire

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Increase the apparent loudness of transmitted voice signals
B	Prevent distortion of voice signals
C	Decrease high-frequency voice output to prevent out-of-band operation
D	Increase transmitter bass response for more natural-sounding SSB signals

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The fuel delivery system
B	The control computers
C	The battery charging system
D	All these choices are correct

21. - G5A10

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

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

22. - G5B06

What is the PEP produced by 200 volts peak-to-peak across a 50-ohm dummy load?

Select	Answer
A	353.5 watts
B	100 watts
C	400 watts
D	1.4 watts

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

Select	Answer
A	40 volts
B	120 volts
C	360 volts
D	25.5 volts

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Comparatively low cost
B	High stability
C	Tight tolerance
D	High capacitance for given volume

25. - G6B08

How is an LED biased when emitting light?

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

26. - G7A06

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

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

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	Divide the RF output power by the DC input power
C	Multiply the RF input power by the reciprocal of the RF output power
D	Divide the DC input power by the DC output power

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Ultimate rejection
B	Rolloff
C	Insertion loss
D	Notch depth

29. - G8A01

How is direct binary FSK modulation generated?

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

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Second harmonics
B	Intercept point
C	Even-order
D	Odd-order

31. - G8C12

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

Select	Answer
A	Binary
B	Varicode
C	Volumetric
D	Viterbi

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The distance between the centers of the conductors and the length of the line
C	The frequency of the signal and the length of the line
D	The distance between the centers of the conductors and the radius of the conductors

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface or buried a few inches below the ground
B	Parallel to the antenna element
C	As high as possible above the ground
D	At the center of the antenna

34. - G9C02

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

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

35. - G9D09

What is the primary use of a Beverage antenna?

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