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

3. - G1A10

What portion of the 10-meter band is available for repeater use?

Select	Answer
A	The entire band
B	The portion above 29.5 MHz
C	The portion between 28.3 MHz and 28.5 MHz
D	The portion between 28.1 MHz and 28.2 MHz

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
B	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity
C	Under no circumstances, FCC rules take priority
D	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS input to the antenna
B	RMS output from the transmitter
C	PEP input to the antenna
D	PEP output from the transmitter

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 Technician 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 using General class frequency privileges
D	Whenever they operate on any amateur frequency

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	All these choices are correct
C	The third party’s amateur license has been revoked and not reinstated
D	The third party is not a US citizen

8. - G2A05

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

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

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	Always use multiple sets of phonetics during check-in
B	Transmit the full net roster at the beginning of every session
C	Have a backup frequency in case of interference or poor conditions
D	All these choices are correct

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you operating full break-in?” or “Can you operate full break-in?”
B	“Will you keep the frequency clear?”
C	“Are you listening only for a specific station?”
D	“Are you busy?” or “Is this frequency in use?”

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. - G2E02

What is VARA?

Select	Answer
A	A digital protocol used with Winlink
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 radio direction finding system used on VHF and UHF

13. - G3A06

What is a geomagnetic storm?

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

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	Check the A-index
B	Send a series of dots and listen for echoes
C	All these choices are correct
D	Use a network of automated receiving stations on the internet to see where your transmissions are being received

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. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To prevent receiver overload from strong incoming signals
C	To reduce power consumption when operating from batteries
D	To reduce the transmitter power when driving a linear amplifier

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	A sidetone monitor
B	A wavemeter
C	A field strength meter
D	An oscilloscope

18. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Ground the center conductor of the audio cable causing the interference
B	Connect the center conductor to the shield of all cables to short circuit the RFI signal
C	Add an additional insulating jacket to the cable
D	Place a ferrite choke on the cable

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.178 MHz to 7.184 MHz
B	7.178 MHz to 7.181 MHz
C	7.1765 MHz to 7.1795 MHz
D	7.175 MHz to 7.178 MHz

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 battery charging system
C	The control computers
D	All these choices are correct

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Farad
B	Ampere
C	Ohm
D	Siemens

22. - G5B09

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

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

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	0.17 ohms
C	80 ohms
D	17 ohms

24. - G6A02

What is an advantage of batteries with low internal resistance?

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

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Digital
B	Programmable Logic
C	MMIC
D	Analog

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It eliminates ground loop current
B	It acts as a fuse for excess voltage
C	It removes shock hazards from the induction coils
D	It discharges the filter capacitors when power is removed

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is high only when both inputs are high
C	Output is low when either or both inputs are high
D	Output is high when either or both inputs are low

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Extremely narrow tuning range
B	Relatively high-power output
C	Pure sine wave output
D	Variable output frequency with the stability of a crystal oscillator

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Phase modulation
B	Pulse modulation
C	Multiplex modulation
D	Amplitude modulation

30. - G8B13

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

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

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Insufficient modulation
B	Long path propagation
C	Overmodulation
D	Backscatter propagation

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases the accuracy of SWR measured at the input to the line
B	Higher loss increases SWR measured at the input to the line
C	Transmission line loss does not affect the SWR measurement
D	Higher loss reduces SWR measured at the input to the line

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Lengthen the radials beyond one wavelength
B	Slope the radials upward
C	Slope the radials downward
D	Coil the radials

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The physical length of the boom
B	All these choices are correct
C	The number of elements on the boom
D	The spacing of each element along the boom

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Broadside and in the plane of the loop
B	Broadside to the loop
C	In the plane of the loop
D	Electrically small loops are omnidirectional