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. - T0A04

What is the purpose of a fuse in an electrical circuit?

Select	Answer
A	To remove power in case of overload
B	To limit current to prevent shocks
C	All these choices are correct
D	To prevent power supply ripple from damaging a component

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. - T0C02

At which of the following frequencies does maximum permissible exposure have the lowest value?

Select	Answer
A	3.5 MHz
B	440 MHz
C	1296 MHz
D	50 MHz

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

5. - T1B02

Which amateurs may contact the International Space Station (ISS) on VHF bands?

Select	Answer
A	Any amateur holding a General class or higher license
B	Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
C	Any amateur holding a Technician class or higher license
D	Any amateur holding a General class or higher license who has applied for and received approval from NASA

6. - T1C03

What types of international communications are an FCC-licensed amateur radio station permitted to make?

Select	Answer
A	Any communications that would be permitted by an international broadcast station
B	Communications incidental to conducting business or remarks of a personal nature
C	Only communications incidental to contest exchanges; all other communications are prohibited
D	Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character

7. - T1D04

Under what conditions is an amateur station authorized to transmit music using a phone emission?

Select	Answer
A	When the music produces no spurious emissions
B	When incidental to an authorized retransmission of manned spacecraft communications
C	When the music is transmitted above 1280 MHz
D	When transmissions are limited to less than three minutes per hour

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

9. - T1F10

Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

Select	Answer
A	The control operator of the repeater
B	The owner of the repeater
C	The control operator of the originating station
D	Both the originating station and the repeater owner

10. - T2A04

What is an appropriate way to call another station on a repeater if you know the other station's call sign?

Select	Answer
A	Wait for the station to call CQ, then answer
B	Say the station's call sign, then identify with your call sign
C	Say "CQ" three times, then the other station's call sign
D	Say "break, break," then say the station's call sign

11. - T2B03

Which of the following describes a linked repeater network?

Select	Answer
A	A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
B	A single repeater with more than one receiver
C	A system of repeaters linked by APRS
D	Multiple repeaters with the same control operator

12. - T2C03

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

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

13. - T3A02

What is the effect of vegetation on UHF and microwave signals?

Select	Answer
A	Absorption
B	Amplification
C	Polarization rotation
D	Knife-edge diffraction

14. - T3B01

What is the relationship between the electric and magnetic fields of an electromagnetic wave?

Select	Answer
A	They revolve in opposite directions
B	They travel at different speeds
C	They are in parallel
D	They are at right angles

15. - T3C09

What is generally the best time for long-distance 10 meter band propagation via the F region?

Select	Answer
A	From dawn to shortly after sunset during periods of low sunspot activity
B	From dawn to shortly after sunset during periods of high sunspot activity
C	From shortly after sunset to dawn during periods of high sunspot activity
D	From shortly after sunset to dawn during periods of low sunspot activity

16. - T4A01

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

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

17. - T4B01

What is the effect of excessive microphone gain on SSB transmissions?

Select	Answer
A	Increased SWR
B	All these choices are correct
C	Frequency instability
D	Distorted transmitted audio

18. - T5A07

Why are metals generally good conductors of electricity?

Select	Answer
A	They have many free protons
B	All these choices are correct
C	They have many free electrons
D	They have relatively high density

19. - T5B03

Which is equal to one kilovolt?

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

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	0.1 amperes
D	12 amperes

21. - T5D14

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

Select	Answer
A	Parallel
B	Resonant
C	Series
D	Branch

22. - T6A07

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

Select	Answer
A	Capacitor
B	Switch
C	Diode
D	Inductor

23. - T6B03

Which of these components can be used as an electronic switch?

Select	Answer
A	Thermistor
B	Transistor
C	Potentiometer
D	Varistor

24. - T6C09

What is component 4 in figure T-2?

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

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	Convert electrical energy into radio waves
C	Supply electrical energy
D	Control the flow of current

26. - T7A09

What is the function of the SSB/CW-FM switch on a VHF power amplifier?

Select	Answer
A	Change the frequency range of the amplifier to operate in the proper segment of the band
B	Set the amplifier for proper operation in the selected mode
C	Reduce the received signal noise
D	Change the mode of the transmitted signal

27. - T7B05

How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

Select	Answer
A	Block the amateur signal with a filter at the antenna input of the affected receiver
B	Switch the transmitter to a narrow-band mode
C	Switch the transmitter from FM to SSB
D	Block the interfering signal with a filter on the amateur transmitter

28. - T7C09

Which of the following causes failure of coaxial cables?

Select	Answer
A	Rapid fluctuation in transmitter output power
B	Operation at 100% duty cycle for an extended period
C	Moisture contamination
D	Solder flux contamination

29. - T7D08

Which of the following types of solder should not be used for radio and electronic applications?

Select	Answer
A	Rosin-core solder
B	Lead-tin solder
C	Acid-core solder
D	Tin-copper solder

30. - T8A11

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

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

31. - T8B04

What mode of transmission is commonly used by amateur radio satellites?

Select	Answer
A	FM
B	All these choices are correct
C	CW/data
D	SSB

32. - T8C07

What is Voice Over Internet Protocol (VoIP)?

Select	Answer
A	A technique employed to “spot” DX stations via the internet
B	A set of rules specifying how to identify your station when linked over the internet to another station
C	A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
D	A method of delivering voice communications over the internet using digital techniques

33. - T8D08

Which of the following is included in packet radio transmissions?

Select	Answer
A	Automatic repeat request in case of error
B	A header that contains the call sign of the station to which the information is being sent
C	All these choices are correct
D	A check sum that permits error detection

34. - T9A03

Which of the following describes a simple dipole oriented parallel to Earth's surface?

Select	Answer
A	A vertically polarized antenna
B	A horizontally polarized antenna
C	A travelling-wave antenna
D	A ground-wave antenna

35. - T9B12

What is standing wave ratio (SWR)?

Select	Answer
A	The ratio of amplifier power output to input
B	The transmitter efficiency ratio
C	A measure of how well a load is matched to a transmission line
D	An indication of the quality of your station’s ground connection

Figure T-2

Figure T-1