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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	A calibrated field strength meter with a calibrated antenna
B	An SWR meter with a peak-reading function
C	An oscilloscope with a high-stability crystal marker generator
D	A receiver with digital signal processing (DSP) noise reduction

2. - G0B04

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

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

3. - G1A09

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

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

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The control operator
B	The FCC
C	The ITU
D	The IEEE

5. - G1C08

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

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

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only on the Technician band segments until you have a receipt for the FCC application fee payment
C	Only the Technician band segments until your upgrade is posted in the FCC database
D	On any General or Technician class band segment except 30 meters and 60 meters

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Under no circumstances except for emergencies
B	Only when the message is intended for third parties in areas where licensing is controlled by the FCC
C	Under any circumstances in which third party messages are permitted by FCC rules
D	Only when the message is intended for licensed radio amateurs

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

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only contacts with stations not within the 48 contiguous states
B	Only contacts with other stations within the 48 contiguous states
C	Only SSTV contacts
D	Only digital contacts

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	Zero beat my signal
B	Send more slowly
C	I am troubled by static
D	Stop sending

11. - G2D04

Which of the following describes an azimuthal projection map?

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

12. - G2E02

What is VARA?

Select	Answer
A	A radio direction finding system used on VHF and UHF
B	A DX spotting system using a network of software defined radios
C	A low signal-to-noise digital mode used for EME (moonbounce)
D	A digital protocol used with Winlink

13. - G3A05

What is the solar flux index?

Select	Answer
A	Another name for the American sunspot number
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	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	World-wide propagation during daylight hours
B	Poor propagation at any time of day
C	High levels of atmospheric noise or static
D	Heavy distortion on signals due to photon absorption

15. - G3C03

Why is skip propagation via the F2 region longer than that via the other ionospheric regions?

Select	Answer
A	Because it is the densest
B	Because it is the highest
C	Because of temperature inversions
D	Because of the Doppler effect

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A pronounced peak
B	A pronounced dip
C	A slow, rhythmic oscillation
D	No change will be observed

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Antenna front-to-back ratio
B	Standing wave ratio
C	Radio wave propagation
D	RF interference

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	Corrosion of the ground rod
C	A ground loop
D	Overheating of ground straps

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

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
B	The socket’s wiring may be inadequate for the current drawn by the transceiver
C	The socket is not wired with an RF-shielded power cable
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ohm
B	Siemens
C	Ampere
D	Farad

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.414
B	2.00
C	0.707
D	1.00

23. - G5C04

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

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

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	Rapid recharge
B	High voltage
C	Long life
D	High discharge current

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The composition, or “mix,” of materials used
B	Its thickness
C	Its conductivity
D	The ratio of outer diameter to inner diameter

26. - G7A10

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

Select	Answer
A	Symbol 1
B	Symbol 5
C	Symbol 11
D	Symbol 4

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	An amplifier used as a frequency multiplier
B	Any RF power amplifier used in conjunction with an amateur transceiver
C	An amplifier in which the output preserves the input waveform
D	A Class C high efficiency amplifier

28. - G7C13

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

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

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase inversion
B	Phase transformation
C	Phase modulation
D	Phase convolution

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Frequency inversion
B	Synthesizing
C	Phase inversion
D	Heterodyning

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 the Varicode character set
C	By using a parity bit with each character
D	By transmitting redundant information with the data

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	1:2
B	2:1
C	4:1
D	1:4

33. - G9B12

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

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

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	The reflector is longer, and the director is shorter
B	The reflector is shorter, and the director is longer
C	Relative length depends on the frequency of operation
D	They are all the same length

35. - G9D09

What is the primary use of a Beverage antenna?

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

Figure G7-1