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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on computer modeling
B	All these choices are correct
C	By measurement of field strength using calibrated equipment
D	By calculation based on FCC OET Bulletin 65

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	Always hold on to the tower with one hand
B	Ensure that all heavy tools are securely fastened to the harness
C	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life
D	All these choices are correct

3. - G1A04

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

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

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 FCC
B	The control operator
C	The IEEE
D	The ITU

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	1.8 kHz
C	3 kHz
D	5.6 kHz

6. - G1D05

When operating a US station by remote control from outside the country, what license is required of the control operator?

Select	Answer
A	A license from the foreign country and a special remote station permit from the FCC
B	A US operator/primary station license
C	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US
D	Only an appropriate US operator/primary license and a special remote station permit from the FCC

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	On any band segment where digital operation is permitted
B	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
C	Only in the non-phone Extra Class segments of the bands
D	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands

8. - G2A12

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

Select	Answer
A	Transmit audio or microphone gain
B	Antenna inductance or capacitance
C	RF clipping level
D	Attenuator level

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Nets have priority
B	Contest operations should yield to non-contest use of frequencies
C	Except during emergencies, no amateur station has priority access to any frequency
D	QSOs in progress have priority

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	AR
D	KN

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To follow standard radiogram structure
B	To allow each station to operate according to conditions
C	To be sure the contact will count for award programs
D	To allow each station to calibrate their frequency display

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	At the bottom of the slow-scan TV segment, near 14.230 MHz
B	At the top of the SSB phone segment, near 14.325 MHz
C	Between 14.070 MHz and 14.100 MHz
D	In the middle of the CW segment, near 14.100 MHz

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A sudden drop in the solar flux index
B	A temporary disturbance in Earth’s geomagnetic field
C	A thunderstorm that affects radio propagation
D	Ripples in the geomagnetic force

14. - G3B02

What factors affect the MUF?

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

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Scatter propagation occurs only at night
B	There are very large, sudden swings in signal strength
C	Signals have a fluttering sound
D	Phone signals have high intelligibility

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

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All these choices are correct
B	Transmitter
C	Receiver
D	Antenna and feed line

18. - G4C07

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

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

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	All these choices are correct
B	Excessive background noise
C	Distorted speech
D	Excess intermodulation products

20. - G4E01

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

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

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Reluctance
B	Admittance
C	Susceptance
D	Conductance

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

Select	Answer
A	25.9 percent
B	20.6 percent
C	10.9 percent
D	12.2 percent

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	3.0 microfarads
B	300 microfarads
C	33.3 microfarads
D	0.33 microfarads

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

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

25. - G6B11

What is an SMA connector?

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

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 11
C	Symbol 2
D	Symbol 1

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

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	45 degrees
B	180 degrees
C	Zero
D	90 degrees

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	The waveform created by connecting the peak values of the modulated signal
C	Spurious signals that envelop nearby frequencies
D	The carrier frequency that contains the signal

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	5 kHz
B	3 kHz
C	16 kHz
D	8 kHz

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	Winlink, PACTOR II, and PACTOR III
B	FT8, FT4, and FST4
C	DMR, D-STAR, and SystemFusion
D	WSPR, MFSK16, and EasyPAL

32. - G9A09

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

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

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Omnidirectional in azimuth
B	Hemispherical
C	Bi-directional in azimuth
D	Isotropic

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBd is 1.25 dBd higher
B	Gain in dBi is 2.15 dB lower
C	Gain in dBd is 1.25 dBd lower
D	Gain in dBi is 2.15 dB higher

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