US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

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	File an Environmental Impact Statement (EIS-97) with the FCC
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	Take action to prevent human exposure to the excessive RF fields
D	All these choices are correct

2. - G0B07

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

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

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	80 meters, 20 meters, 15 meters, and 10 meters
B	80 meters, 40 meters, 20 meters, and 15 meters
C	160 meters, 60 meters, 15 meters, and 12 meters
D	60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B06

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

Select	Answer
A	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
B	Under no circumstances, FCC rules take priority
C	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
D	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	200 watts PEP output
B	2000 watts PEP output
C	1000 watts PEP output
D	1500 watts PEP output

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	Only on the Technician band segments until you have a receipt for the FCC application fee payment
B	On any General or Technician class band segment
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. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	These frequencies are set aside for bulletins from the FCC
B	A system of propagation beacon stations operates on those frequencies
C	These frequencies are set aside for emergency operations
D	A system of automatic digital stations operates on those frequencies

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

Select	Answer
A	Lower sideband
B	Upper sideband
C	Suppressed sideband
D	Double sideband

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	Approximately 6 kHz
C	2 kHz to 3 kHz
D	150 Hz to 500 Hz

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	We have already confirmed the contact
B	Send slower
C	I have received and understood
D	We have worked before

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
B	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
C	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
D	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary

12. - G2E03

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

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

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At the summer solstice
C	At any point
D	Only at the maximum point

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Maximum Usable Frequency for communications between two points
C	The Minimum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24-hour period

15. - G3C03

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

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

16. - G4A11

Why should the ALC system be inactive when transmitting AFSK data signals?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	The ALC action distorts the signal
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	All these choices are correct

17. - G4B10

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

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

18. - G4C07

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

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

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 MHz to 14.350 MHz
B	14.3455 MHz to 14.3485 MHz
C	14.347 MHz to 14.647 MHz
D	14.344 MHz to 14.347 MHz

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the alternator or generator using heavy-gauge wire
B	To the alternator or generator using insulated heavy duty balanced transmission line
C	To the battery using heavy-gauge wire
D	To the battery using insulated heavy duty balanced transmission line

21. - G5A10

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

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

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	245 volts
C	346 volts
D	173 volts

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

Select	Answer
A	24 to 1
B	144 to 1
C	3.5 to 1
D	12 to 1

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	1.0 volts
B	0.3 volts
C	0.7 volts
D	0.1 volt

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for RF amplification
B	Low power consumption
C	High power handling capability
D	Better suited for power supply regulation

26. - G7A05

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

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

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A frequency multiplier and a mixer
C	A circulator and a filter operating in a feed-forward loop
D	An amplifier and a divider

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	Carrier oscillator
B	RF amplifier
C	Filter
D	IF amplifier

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	Its encoding provides error correction
B	It is sideband sensitive
C	Its bandwidth is approximately the same as BPSK31
D	All these choices are correct

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Reactance modulator
B	Mixer
C	Balanced converter
D	Multiplier

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By transmitting redundant information with the data
B	By controlling transmitter output power for optimum signal strength
C	By using the Varicode character set
D	By using a parity bit with each character

32. - G9A09

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

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

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	At the center of the antenna
C	As high as possible above the ground
D	Parallel to the antenna element

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It does not require the driven element to be insulated from the boom
B	It is useful for matching multiband antennas
C	All these choices are correct
D	It does not require any inductors or capacitors

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