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

2. - T0B01

Which of the following is good practice when installing ground wires on a tower for lightning protection?

Select	Answer
A	Make sure all ground wire bends are right angles
B	Put a drip loop in the ground connection to prevent water damage to the ground system
C	All these choices are correct
D	Ensure that connections are short and direct

3. - T0C10

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

Select	Answer
A	It takes into account the thermal effects of the final amplifier
B	It takes into account the antenna feed line loss
C	It affects the peak exposure to radiation
D	It affects the average exposure to radiation

4. - T1A11

When is willful interference to other amateur radio stations permitted?

Select	Answer
A	At any time, stations in the Amateur Radio Service are not protected from willful interference
B	At no time
C	When making short test transmissions
D	To stop another amateur station that is breaking the FCC rules

5. - T1B10

Where may SSB phone be used in amateur bands above 50 MHz?

Select	Answer
A	In at least some segment of all these bands
B	On any band if the power is limited to 25 watts
C	Only in sub-bands allocated to General class or higher licensees
D	Only on repeaters

6. - T1C09

What is the grace period for renewal if an amateur license expires?

Select	Answer
A	Ten years
B	Two years
C	Three years
D	Five years

7. - T1D10

How does the FCC define broadcasting for the Amateur Radio Service?

Select	Answer
A	Any transmission made by the licensed station
B	Transmission of messages directed only to amateur operators
C	Transmissions intended for reception by the general public
D	Two-way transmissions by amateur stations

8. - T1E08

Which of the following is an example of automatic control?

Select	Answer
A	Using a computer or other device to send CW automatically
B	Using a computer or other device to identify automatically
C	Controlling a station over the internet
D	Repeater operation

9. - T1F02

How often must you identify with your FCC-assigned call sign when using tactical call signs such as “Race Headquarters”?

Select	Answer
A	Once during every hour
B	Never, the tactical call is sufficient
C	At the end of each communication and every ten minutes during a communication
D	At the end of every transmission

10. - T2A08

What is the meaning of the procedural signal “CQ”?

Select	Answer
A	Test transmission, no reply expected
B	Calling any station
C	Only the called station should transmit
D	Call on the quarter hour

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 system of repeaters linked by APRS
C	A single repeater with more than one receiver
D	Multiple repeaters with the same control operator

12. - T2C07

Which of the following is standard practice when you participate in a net?

Select	Answer
A	When first responding to the net control station, transmit your call sign, name, and address as in the FCC database
B	Record the time of each of your transmissions
C	All these choices are correct
D	Unless you are reporting an emergency, transmit only when directed by the net control station

13. - T3A04

What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

Select	Answer
A	Received signal strength is reduced
B	The modulation sidebands might become inverted
C	Nothing significant will happen
D	Signals have an echo effect

14. - T3B11

What is the approximate velocity of a radio wave in free space?

Select	Answer
A	150,000 miles per hour
B	300,000,000 meters per second
C	150,000 meters per second
D	300,000,000 miles per hour

15. - T3C08

What causes tropospheric ducting?

Select	Answer
A	Temperature inversions in the atmosphere
B	Sunspots and solar flares
C	Updrafts from hurricanes and tornadoes
D	Discharges of lightning during electrical storms

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. - T4B09

How is a specific group of stations selected on a digital voice transceiver?

Select	Answer
A	By enabling the group’s CTCSS tone
B	By entering the group’s identification code
C	By activating automatic identification
D	By retrieving the frequencies from transceiver memory

18. - T5A06

What is the unit of frequency?

Select	Answer
A	Hertz
B	Farad
C	Henry
D	Tesla

19. - T5B13

Which is equal to 2425 MHz?

Select	Answer
A	2.425 GHz
B	2425 GHz
C	24.25 GHz
D	0.002425 GHz

20. - T5C05

What is the unit of impedance?

Select	Answer
A	The coulomb
B	The ohm
C	The ampere
D	The volt

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	0.125 ohms
B	13.5 ohms
C	8 ohms
D	18 ohms

22. - T6A01

What electrical component opposes the flow of current in a DC circuit?

Select	Answer
A	Resistor
B	Inductor
C	Inverter
D	Transformer

23. - T6B04

Which of the following components can consist of three regions of semiconductor material?

Select	Answer
A	Alternator
B	Pentagrid converter
C	Triode
D	Transistor

24. - T6C07

What is component 8 in figure T-2?

Select	Answer
A	Regulator IC
B	Inductor
C	Light emitting diode
D	Resistor

25. - T6D10

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

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

26. - T7A10

What device increases the transmitted output power from a transceiver?

Select	Answer
A	A voltage divider
B	All these choices are correct
C	An RF power amplifier
D	An impedance network

27. - T7B01

What can you do if you are told your FM handheld or mobile transceiver is over-deviating?

Select	Answer
A	Let the transceiver cool off
B	Talk farther away from the microphone
C	Talk louder into the microphone
D	Change to a higher power level

28. - T7C10

Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

Select	Answer
A	Ultraviolet light can increase losses in the cable’s jacket
B	Ultraviolet light can damage the jacket and allow water to enter the cable
C	Ultraviolet and RF signals can mix, causing interference
D	Ultraviolet resistant jackets prevent harmonic radiation

29. - T7D08

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

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

30. - T8A06

Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

Select	Answer
A	Lower sideband
B	Upper sideband
C	Inverted sideband
D	Suppressed sideband

31. - T8B11

Who may receive telemetry from a space station?

Select	Answer
A	Anyone
B	A licensed radio amateur who has been certified by the protocol developer
C	A licensed radio amateur who has registered for an access code from AMSAT
D	A licensed radio amateur with a transmitter equipped for interrogating the satellite

32. - T8C10

What is required before using the EchoLink system?

Select	Answer
A	All these choices are correct
B	Register your call sign and provide proof of license
C	Purchase a license to use the EchoLink software
D	Complete the required EchoLink training

33. - T8D10

Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?

Select	Answer
A	Earth-Moon-Earth
B	All these choices are correct
C	Meteor scatter
D	Weak signal propagation beacons

34. - T9A05

Which of the following increases the resonant frequency of a dipole antenna?

Select	Answer
A	Inserting coils in series with radiating wires
B	Adding capacitive loading to the ends of the radiating wires
C	Shortening it
D	Lengthening it

35. - T9B08

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

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

Figure T-2

Figure T-1