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

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
B	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
C	Amateur stations may use the band only during emergencies
D	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Encrypted messages, if not intended to facilitate a criminal act
B	Automatic retransmission of other amateur signals by any amateur station
C	Occasional retransmission of weather and propagation forecast information from US government stations
D	Unidentified transmissions of less than 10 seconds duration for test purposes only

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
B	Obtain an experimental license from the FCC
C	Publicly document the technical characteristics of the protocol
D	Type-certify equipment to FCC standards

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 except 30 meters and 60 meters
C	On any General or Technician class band segment
D	Only the Technician band segments until your upgrade is posted in the FCC database

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	No third-party traffic may be transmitted
B	The interrogating transmission must be made by another automatically controlled station
C	The control operator of the interrogating station must hold an Amateur Extra class license
D	The station initiating the contact must be under local or remote control

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

9. - G2B06

How can you avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send “QRL?” on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
B	Listen for 2 minutes before calling CQ
C	Send “QSY” on CW or if using phone, announce “the frequency is in use,” then give your call sign and listen for a response
D	Send the letter “V” in Morse code several times and listen for a response, or say “test” several times and listen for a response

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Change frequency
B	Repeat everything twice
C	Send slower
D	Increase your power

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	Able, Baker, Charlie, Dog
B	Adam, Boy, Charles, David
C	Alpha, Bravo, Charlie, Delta
D	America, Boston, Canada, Denmark

12. - G2E11

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

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

13. - G3A04

Which of the following are the least reliable bands for long-distance communications during periods of low solar activity?

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

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

Select	Answer
A	12,000 miles
B	180 miles
C	2,500 miles
D	1,200 miles

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The E region is unstable during daylight hours
B	The F region is unstable during daylight hours
C	The F region absorbs signals at these frequencies during daylight hours
D	The D region absorbs signals at these frequencies during daylight hours

16. - G4A10

What is the function of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	Computer interface for PSK and RTTY operation
C	Automatic generation of dots and dashes for CW operation
D	To allow time for switching the antenna from the receiver to the transmitter

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

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	Clearly audible speech
B	A steady hum whenever the transmitter is on the air
C	Distorted speech
D	On-and-off humming or clicking

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It increases peak power
B	It increases average power
C	It reduces intermodulation distortion
D	It reduces harmonic distortion

20. - G4E01

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

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

21. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance decreases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance increases

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	1500 watts
B	2120 watts
C	1060 watts
D	530 watts

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	0.30 henries
B	3.3 millihenries
C	30 millihenries
D	3.3 henries

24. - G6A02

What is an advantage of batteries with low internal resistance?

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

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A small bayonet connector used for data circuits
B	A moisture-resistant RF connector useful to 10 GHz
C	A nickel plated version of the PL-259
D	A low noise figure VHF connector

26. - G7A05

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

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

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	SSB
C	FM
D	All these choices are correct

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in a single sideband receiver to extract the modulated signal
B	Used in transmitter to perform frequency multiplication
C	Used in an FM receiver to filter out unwanted sidebands
D	Used in test gear to detect spurious mixing products

29. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Amplitude modulation
B	Phase modulation
C	Frequency modulation
D	Power modulation

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Intercept point
B	Second harmonics
C	Even-order
D	Odd-order

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	Backscatter propagation
C	Overmodulation
D	Long path propagation

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR increases loss in a lossy transmission line
B	High SWR reduces the relative effect of transmission line loss
C	There is no relationship between transmission line loss and SWR
D	High SWR makes it difficult to measure transmission line loss

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	8 feet
C	33 feet
D	16 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	They are all the same length
C	Relative length depends on the frequency of operation
D	The reflector is shorter, and the director is longer

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Approximately 50 ohms
B	Approximately 300 ohms
C	Very high
D	Very low