US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

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1. - T0A01

Which of the following is a safety hazard of a 12-volt storage battery?

Select	Answer
A	Shorting the terminals can cause burns, fire, or an explosion
B	Touching both terminals with the hands can cause electrical shock
C	All these choices are correct
D	RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas

2. - T0B08

Which is a proper grounding method for a tower?

Select	Answer
A	A ferrite-core RF choke connected between the tower and ground
B	Separate eight-foot ground rods for each tower leg, bonded to the tower and each other
C	A single four-foot ground rod, driven into the ground no more than 12 inches from the base
D	A connection between the tower base and a cold water pipe

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	Lower frequency RF fields have more energy than higher frequency fields
B	The human body absorbs more RF energy at some frequencies than at others
C	Lower frequency RF fields do not penetrate the human body
D	Higher frequency RF fields are transient in nature

4. - T1A06

What is the FCC Part 97 definition of a beacon?

Select	Answer
A	A bulletin sent by the FCC to announce a national emergency
B	An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
C	A government transmitter marking the amateur radio band edges
D	A continuous transmission of weather information authorized in the amateur bands by the National Weather Service

5. - T1B09

Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

Select	Answer
A	To allow for calibration error in the transmitter frequency display
B	All these choices are correct
C	To allow for transmitter frequency drift
D	So that modulation sidebands do not extend beyond the band edge

6. - T1C11

If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

Select	Answer
A	Yes, as soon as you apply for renewal
B	No, you must wait until the license has been renewed
C	Yes, for up to one year
D	Yes, for up to two years

7. - T1D08

In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station?

Select	Answer
A	When the communication is made to obtain emergency information for a local broadcast station
B	All these choices are correct
C	When the communication is incidental to classroom instruction at an educational institution
D	When the communication is related to the sale of amateur equipment by the control operator's employer

8. - T1E11

Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?

Select	Answer
A	The third party participant
B	The station custodian
C	The person operating the station equipment
D	The station licensee

9. - T1F06

Which of the following self-assigned indicators are acceptable when using a phone transmission?

Select	Answer
A	KL7CC slant W3
B	KL7CC slash W3
C	KL7CC stroke W3
D	All these choices are correct

10. - T2A03

What is a common repeater frequency offset in the 70 cm band?

Select	Answer
A	Plus or minus 600 kHz
B	Plus or minus 500 kHz
C	Plus or minus 5 MHz
D	Plus or minus 1 MHz

11. - T2B01

How is a VHF/UHF transceiver’s “reverse” function used?

Select	Answer
A	To listen on a repeater’s input frequency
B	To increase power output
C	To reduce power output
D	To listen on a repeater’s output frequency

12. - T2C03

What technique is used to ensure that voice messages containing unusual words are received correctly?

Select	Answer
A	All these choices are correct
B	Spell the words using a standard phonetic alphabet
C	Speak very loudly into the microphone
D	Send the words by voice and Morse code

13. - T3A01

Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

Select	Answer
A	The signal path encounters different concentrations of water vapor
B	All these choices are correct
C	Multipath propagation cancels or reinforces signals
D	VHF ionospheric propagation is very sensitive to path length

14. - T3B09

What frequency range is referred to as UHF?

Select	Answer
A	300 to 3000 MHz
B	300 to 3000 kHz
C	30 to 300 kHz
D	30 to 300 MHz

15. - T3C04

Which of the following types of propagation is most commonly associated with occasional strong signals on the 10, 6, and 2 meter bands from beyond the radio horizon?

Select	Answer
A	Sporadic E
B	Gray-line propagation
C	Backscatter
D	D region absorption

16. - T4A05

Where should an RF power meter be installed?

Select	Answer
A	In parallel with the push-to-talk line and the antenna
B	In the feed line, between the transmitter and antenna
C	At the power supply output
D	In the power supply cable, as close as possible to the radio

17. - T4B08

What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

Select	Answer
A	Increases the number of frequencies that can be stored in memory
B	Permits monitoring several modes at once by selecting a separate filter for each mode
C	Increases the amount of offset between receive and transmit frequencies
D	Permits noise or interference reduction by selecting a bandwidth matching the mode

18. - T5A06

What is the unit of frequency?

Select	Answer
A	Farad
B	Henry
C	Tesla
D	Hertz

19. - T5B04

Which is equal to one microvolt?

Select	Answer
A	One one-thousandth of a volt
B	One thousand kilovolts
C	One one-millionth of a volt
D	One million volts

20. - T5C09

How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

Select	Answer
A	3.8 watts
B	0.7 watts
C	23.8 watts
D	138 watts

21. - T5D05

What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

Select	Answer
A	13.5 ohms
B	18 ohms
C	0.125 ohms
D	8 ohms

22. - T6A07

What electrical component is typically constructed as a coil of wire?

Select	Answer
A	Inductor
B	Capacitor
C	Switch
D	Diode

23. - T6B11

What is the term that describes a device's ability to amplify a signal?

Select	Answer
A	Gain
B	Forward voltage drop
C	Forward resistance
D	On resistance

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Antenna
B	Ground
C	Transmitter
D	Dummy load

25. - T6D10

What is the function of component 2 in figure T-1?

Select	Answer
A	Give off light when current flows through it
B	Control the flow of current
C	Supply electrical energy
D	Convert electrical energy into radio waves

26. - T7A04

Which term describes the ability of a receiver to discriminate between multiple signals?

Select	Answer
A	Discrimination ratio
B	Selectivity
C	Harmonic distortion
D	Sensitivity

27. - T7B10

What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

Select	Answer
A	Your batteries are running low
B	All these choices are correct
C	You are in a bad location
D	Your transmitter is slightly off frequency

28. - T7C08

Which instrument can be used to determine SWR?

Select	Answer
A	Directional wattmeter
B	Iambic pentameter
C	Voltmeter
D	Ohmmeter

29. - T7D10

What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

Select	Answer
A	Alternating between open and short circuit
B	Decreasing resistance with time
C	Steady full-scale reading
D	Increasing resistance with time

30. - T8A11

What is the approximate bandwidth required to transmit a CW signal?

Select	Answer
A	15 kHz
B	150 Hz
C	1000 Hz
D	2.4 kHz

31. - T8B09

What causes spin fading of satellite signals?

Select	Answer
A	Rotation of the satellite and its antennas
B	Circular polarized noise interference radiated from the sun
C	Doppler shift of the received signal
D	Interfering signals within the satellite uplink band

32. - T8C01

Which of the following methods is used to locate sources of noise interference or jamming?

Select	Answer
A	Echolocation
B	Radio direction finding
C	Doppler radar
D	Phase locking

33. - T8D13

What is FT8?

Select	Answer
A	A digital mode capable of low signal-to-noise operation
B	A wideband FM voice mode
C	An eight channel multiplex mode for FM repeaters
D	A digital slow-scan TV mode with forward error correction and automatic color compensation

34. - T9A04

What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

Select	Answer
A	It has low efficiency
B	It is mechanically fragile
C	All these choices are correct
D	It transmits only circularly polarized signals

35. - T9B02

What is the most common impedance of coaxial cables used in amateur radio?

Select	Answer
A	8 ohms
B	12 ohms
C	600 ohms
D	50 ohms

Figure T-3

Figure T-1