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. - T0A11

What hazard exists in a power supply immediately after turning it off?

Select	Answer
A	Voltage transients from kickback diodes
B	Circulating currents in the dc filter
C	Leakage flux in the power transformer
D	Charge stored in filter capacitors

2. - T0B09

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

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

3. - T0C03

How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

Select	Answer
A	It increases by a factor of 3
B	It increases by a factor of 2
C	It decreases by 50 percent
D	There is no adjustment allowed for lower duty cycle

4. - T1A03

What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

Select	Answer
A	It is required when in contact with foreign stations
B	It is encouraged
C	All these choices are correct
D	It is required when transmitting emergency messages

5. - T1B07

Which of the following VHF/UHF band segments are limited to CW only?

Select	Answer
A	All these choices are correct
B	902.0 MHz to 902.1 MHz
C	219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
D	50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

6. - T1C06

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

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

7. - T1D02

Under which of the following circumstances are one-way transmissions by an amateur station prohibited?

Select	Answer
A	In all circumstances
B	Broadcasting
C	Telecommand or transmissions of telemetry
D	International Morse Code Practice

8. - T1E02

Who may be the control operator of a station communicating through an amateur satellite or space station?

Select	Answer
A	Only an Amateur Extra Class operator
B	A General class or higher licensee with a satellite operator certification
C	Any amateur allowed to transmit on the satellite uplink frequency
D	Only an Amateur Extra Class operator who is also an AMSAT member

9. - T1F05

What method of call sign identification is required for a station transmitting phone signals?

Select	Answer
A	Send the call sign followed by the indicator R
B	Send the call sign followed by the indicator RPT
C	Send the call sign using a CW or phone emission
D	Send the call sign using only a phone emission

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. - T2B05

What would cause your FM transmission audio to be distorted on voice peaks?

Select	Answer
A	Your transmit power is too high
B	You need to talk louder
C	Your repeater offset is inverted
D	You are talking too loudly

12. - T2C10

What information is contained in the preamble of a formal traffic message?

Select	Answer
A	The telephone number of the addressee
B	The address of the intended recipient
C	The email address of the originating station
D	Information needed to track the message

13. - T3A11

Which region of the atmosphere can refract or bend HF and VHF radio waves?

Select	Answer
A	The stratosphere
B	The troposphere
C	The ionosphere
D	The mesosphere

14. - T3B09

What frequency range is referred to as UHF?

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

15. - T3C07

What band is best suited for communicating via meteor scatter?

Select	Answer
A	33 centimeters
B	2 meters
C	6 meters
D	70 centimeters

16. - T4A03

Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

Select	Answer
A	To provide a good counterpoise for the antenna
B	To minimize voltage drop when transmitting
C	All these choices are correct
D	To avoid RF interference

17. - T4B08

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

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

18. - T5A06

What is the unit of frequency?

Select	Answer
A	Hertz
B	Farad
C	Tesla
D	Henry

19. - T5B01

How many milliamperes is 1.5 amperes?

Select	Answer
A	150 milliamperes
B	15 milliamperes
C	1500 milliamperes
D	15,000 milliamperes

20. - T5C11

How much current is required to deliver 120 watts at a voltage of 12 volts DC?

Select	Answer
A	10 amperes
B	132 amperes
C	12 amperes
D	0.1 amperes

21. - T5D14

In which type of circuit is voltage the same across all components?

Select	Answer
A	Series
B	Branch
C	Parallel
D	Resonant

22. - T6A06

What type of electrical component stores energy in a magnetic field?

Select	Answer
A	Capacitor
B	Inductor
C	Varistor
D	Diode

23. - T6B05

What type of transistor has a gate, drain, and source?

Select	Answer
A	Varistor
B	Tesla-effect
C	Bipolar junction
D	Field-effect

24. - T6C04

What is component 3 in figure T-1?

Select	Answer
A	Ground symbol
B	Resistor
C	Lamp
D	Transistor

25. - T6D09

What is the name of a device that combines several semiconductors and other components into one package?

Select	Answer
A	Transformer
B	Transducer
C	Integrated circuit
D	Multi-pole relay

26. - T7A04

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

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

27. - T7B07

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

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

28. - T7C01

What is the primary purpose of a dummy load?

Select	Answer
A	To prevent over-modulation of a transmitter
B	To prevent transmitting signals over the air when making tests
C	To improve the signal-to-noise ratio of a receiver
D	To improve the efficiency of an antenna

29. - T7D04

Which instrument is used to measure electric current?

Select	Answer
A	An electrometer
B	An ohmmeter
C	An ammeter
D	A voltmeter

30. - T8A10

What is the approximate bandwidth of AM fast-scan TV transmissions?

Select	Answer
A	More than 10 MHz
B	About 3 MHz
C	About 1 MHz
D	About 6 MHz

31. - T8B12

Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

Select	Answer
A	Listen for distortion on your downlink signal
B	Check your signal strength report in the telemetry data
C	All these choices are correct
D	Your signal strength on the downlink should be about the same as the beacon

32. - T8C06

How is over the air access to IRLP nodes accomplished?

Select	Answer
A	By obtaining a password that is sent via voice to the node
B	By entering the proper internet password
C	By using DTMF signals
D	By using CTCSS tone codes

33. - T8D01

Which of the following is a digital communications mode?

Select	Answer
A	All these choices are correct
B	IEEE 802.11
C	Packet radio
D	FT8

34. - T9A08

What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

Select	Answer
A	12
B	19
C	112
D	50

35. - T9B06

Which of the following RF connector types is most suitable for frequencies above 400 MHz?

Select	Answer
A	DB-25
B	RS-213
C	UHF (PL-259/SO-239)
D	Type N

Figure T-1