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. - T0A06

What is a good way to guard against electrical shock at your station?

Select	Answer
A	All these choices are correct
B	Install mechanical interlocks in high-voltage circuits
C	Use three-wire cords and plugs for all AC powered equipment
D	Connect all AC powered station equipment to a common safety ground

2. - T0B09

Why should you avoid attaching an antenna to a utility pole?

Select	Answer
A	All these choices are correct
B	The antenna could contact high-voltage power lines
C	The 60 Hz radiations from the feed line may increase the SWR
D	The antenna will not work properly because of induced voltages

3. - T0C12

How does RF radiation differ from ionizing radiation (radioactivity)?

Select	Answer
A	RF radiation can only be detected with an RF dosimeter
B	RF radiation is perfectly safe
C	RF radiation is limited in range to a few feet
D	RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA

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	A government transmitter marking the amateur radio band edges
C	A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
D	An amateur station transmitting communications for the purposes of observing propagation or related experimental activities

5. - T1B11

What is the maximum peak envelope power output for Technician class operators in their HF band segments?

Select	Answer
A	200 watts
B	50 watts
C	100 watts
D	10 watts

6. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit?

Select	Answer
A	From any vessel or craft located in international waters and documented or registered in the United States
B	From within any country that is a member of the United Nations
C	From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
D	From within any country that belongs to the International Telecommunication Union

7. - T1D06

What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

Select	Answer
A	Any such language is prohibited
B	The FCC maintains a list of words that are not permitted to be used on amateur frequencies
C	The ITU maintains a list of words that are not permitted to be used on amateur frequencies
D	There is no such prohibition

8. - T1E03

Who must designate the station control operator?

Select	Answer
A	Any licensed operator
B	The FCC
C	The station licensee
D	The frequency coordinator

9. - T1F09

What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?

Select	Answer
A	Repeater station
B	Message forwarding station
C	Beacon station
D	Earth station

10. - T2A12

What should you do before calling CQ?

Select	Answer
A	Make sure you are authorized to use that frequency
B	All these choices are correct
C	Listen first to be sure that no one else is using the frequency
D	Ask if the frequency is in use

11. - T2B13

What is the purpose of a squelch function?

Select	Answer
A	Eliminate parasitic oscillations in an RF amplifier
B	Reduce interference from impulse noise
C	Mute the receiver audio when a signal is not present
D	Reduce a CW transmitter's key clicks

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	Send the words by voice and Morse code
D	Speak very loudly into the microphone

13. - T3A09

Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

Select	Answer
A	Both the transmitting and receiving antennas must be of the same polarization
B	Either vertically or horizontally polarized antennas may be used for transmission or reception
C	Digital modes are unusable
D	FM voice is unusable

14. - T3B09

What frequency range is referred to as UHF?

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

15. - T3C03

What is a characteristic of VHF signals received via auroral backscatter?

Select	Answer
A	They are distorted and signal strength varies considerably
B	They are generally strongest when your antenna is aimed west
C	They are often received from 10,000 miles or more
D	They occur only during winter nighttime hours

16. - T4A01

Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

Select	Answer
A	24.0 volts at 4 amperes
B	13.8 volts at 4 amperes
C	13.8 volts at 12 amperes
D	24.0 volts at 12 amperes

17. - T4B07

What does a DMR “code plug” contain?

Select	Answer
A	The codec for digitizing audio
B	The DMR software version
C	Your call sign in CW for automatic identification
D	Access information for repeaters and talkgroups

18. - T5A11

What type of current flow is opposed by resistance?

Select	Answer
A	Direct current
B	All these choices are correct
C	Alternating current
D	RF current

19. - T5B12

Which is equal to 28400 kHz?

Select	Answer
A	28.400 kHz
B	2.800 MHz
C	284.00 MHz
D	28.400 MHz

20. - T5C03

What describes the ability to store energy in a magnetic field?

Select	Answer
A	Resistance
B	Admittance
C	Inductance
D	Capacitance

21. - T5D13

In which type of circuit is DC current the same through all components?

Select	Answer
A	Parallel
B	Branch
C	Resonant
D	Series

22. - T6A09

What electrical component is used to protect other circuit components from current overloads?

Select	Answer
A	Fuse
B	Thyratron
C	All these choices are correct
D	Varactor

23. - T6B02

What electronic component allows current to flow in only one direction?

Select	Answer
A	Fuse
B	Resistor
C	Diode
D	Driven element

24. - T6C09

What is component 4 in figure T-2?

Select	Answer
A	Potentiometer
B	Double-pole switch
C	Variable inductor
D	Transformer

25. - T6D02

What is a relay?

Select	Answer
A	An electrically-controlled switch
B	A current controlled amplifier
C	An inverting amplifier
D	A pass transistor

26. - T7A08

Which of the following describes combining speech with an RF carrier signal?

Select	Answer
A	Low-pass filtering
B	Oscillation
C	Impedance matching
D	Modulation

27. - T7B07

Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

Select	Answer
A	Installing bypass capacitors on the microphone cable
B	Using double-shielded coaxial cable
C	Installing an RF preamplifier
D	Installing a band-reject filter

28. - T7C04

What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

Select	Answer
A	Zero
B	Full Scale
C	1:1
D	50:50

29. - T7D09

What is the characteristic appearance of a cold tin-lead solder joint?

Select	Answer
A	Dark black spots
B	Excessive solder
C	A bright or shiny surface
D	A rough or lumpy surface

30. - T8A07

What is a characteristic of single sideband (SSB) compared to FM?

Select	Answer
A	SSB signals are less susceptible to interference
B	SSB signals are easier to tune in correctly
C	All these choices are correct
D	SSB signals have narrower bandwidth

31. - T8B07

What is Doppler shift in reference to satellite communications?

Select	Answer
A	A change in the satellite orbit
B	A special digital communications mode for some satellites
C	An observed change in signal frequency caused by relative motion between the satellite and Earth station
D	A mode where the satellite receives signals on one band and transmits on another

32. - T8C09

Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

Select	Answer
A	DMR
B	D-STAR
C	EchoLink
D	IRLP

33. - T8D06

What does the abbreviation "PSK" mean?

Select	Answer
A	Packet Short Keying
B	Phased Slide Keying
C	Pulse Shift Keying
D	Phase Shift Keying

34. - T9A09

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

Select	Answer
A	6
B	236
C	112
D	50

35. - T9B08

Which of the following is a source of loss in coaxial feed line?

Select	Answer
A	Water intrusion into coaxial connectors
B	High SWR
C	Multiple connectors in the line
D	All these choices are correct

Figure T-2