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	By measurement of field strength using calibrated equipment
C	By calculation based on FCC OET Bulletin 65
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	All these choices are correct
B	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life
C	Always hold on to the tower with one hand
D	Ensure that all heavy tools are securely fastened to the harness

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

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

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	28.20 MHz to 28.30 MHz
B	On any frequency if power is less than 1 watt
C	On any frequency if transmissions are in Morse code
D	21.08 MHz to 21.09 MHz

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	200 watts PEP output
C	50 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

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 is not a US citizen
D	The third party’s amateur license has been revoked and not reinstated

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

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

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

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign “BK”
B	An operator must activate a manual send/receive switch before and after every transmission
C	Transmitting stations can receive between code characters and elements
D	Automatic keyers, instead of hand keys, are used to send Morse code

11. - G2D05

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

Select	Answer
A	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
B	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat
C	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
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. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide high-speed data services during an emergency or community event
B	To provide real time propagation data by monitoring amateur radio transmissions worldwide
C	To provide FM repeater coverage in remote areas
D	To provide DX spotting reports to aid contesters and DXers

13. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

Select	Answer
A	8 minutes
B	28 days
C	20 to 40 hours
D	1 to 2 hours

14. - G3B04

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

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

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	Ground waves are absorbing much of the signal
B	The ionospheric region involved is unstable
C	The E region is not present
D	Energy is scattered into the skip zone through several different paths

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	All these choices are correct
C	The ALC action distorts the signal
D	When using digital modes, too much ALC activity can cause the transmitter to overheat

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The transmitter balanced mixer output
B	The local oscillator of the transmitter
C	An external RF oscillator
D	The attenuated RF output of the transmitter

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	The ground rod is resonant
D	Flat braid rather than round wire has been used for the ground wire

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 10 times less powerful
C	It is 20 times less powerful
D	It is 100 times more powerful

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Shunt
C	Series-parallel
D	Bypass

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of voltage to current
B	The product of current and voltage
C	The product of current and reactance
D	The ratio of current to voltage

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

Select	Answer
A	Approximately 2 dB
B	Approximately 6 dB
C	Approximately 9 dB
D	Approximately 3 dB

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	1,000 millihenries
B	14.3 millihenries
C	70 millihenries
D	7 millihenries

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	12 volts
B	8.5 volts
C	6 volts
D	10.5 volts

25. - G6B03

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

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

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave bridge
B	Synchronous
C	Half-wave
D	Full-wave

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

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Cutoff and rolloff
B	Upper and lower half-power
C	Pole and zero
D	Image and harmonic

29. - G8A12

What is QPSK modulation?

Select	Answer
A	Modulation using quasi-parallel to serial conversion to reduce bandwidth
B	Modulation using quadra-pole sideband keying to generate spread spectrum signals
C	Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
D	Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits

30. - G8B11

What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?

Select	Answer
A	The sum and difference
B	The ratio
C	The arithmetic product
D	The average

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	High and low
B	Dot and dash
C	Mark and space
D	On and off

32. - G9A03

What is the nominal characteristic impedance of “window line” transmission line?

Select	Answer
A	100 ohms
B	75 ohms
C	450 ohms
D	50 ohms

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight off both ends of the antenna
B	It is a figure-eight at right angles to the antenna
C	It is a circle (equal radiation in all directions)
D	It has a pair of lobes on one side of the antenna and a single lobe on the other side

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

35. - G9D09

What is the primary use of a Beverage antenna?

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