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. - T0A05

Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

Select	Answer
A	The power supply ripple would greatly increase
B	All these choices are correct
C	Excessive current could cause a fire
D	The larger fuse would be likely to blow because it is rated for higher current

2. - T0B06

What is the minimum safe distance from a power line to allow when installing an antenna?

Select	Answer
A	Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
B	The height of the power line above ground
C	Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
D	1/2 wavelength at the operating frequency

3. - T0C11

What is the definition of duty cycle during the averaging time for RF exposure?

Select	Answer
A	The difference between the lowest power output and the highest power output of a transmitter
B	The percentage of time that a transmitter is transmitting
C	The difference between the PEP and average power output of a transmitter
D	The percentage of time that a transmitter is not transmitting

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 required when transmitting emergency messages
C	All these choices are correct
D	It is encouraged

5. - T1B07

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

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

6. - T1C07

Which of the following can result in revocation of the station license or suspension of the operator license?

Select	Answer
A	Failure to obtain FCC type acceptance prior to using a home-built transmitter
B	Failure to have a copy of your license available at your station
C	Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
D	Failure to provide and maintain a correct email address with the FCC

7. - T1D04

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

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

8. - T1E07

When the control operator is not the station licensee, who is responsible for the proper operation of the station?

Select	Answer
A	All licensed amateurs who are present at the operation
B	Only the control operator
C	Only the station licensee
D	The control operator and the station licensee

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

10. - T2A09

Which of the following indicates that a station is listening on a repeater and looking for a contact?

Select	Answer
A	“QSY” followed by your call sign
B	“CQ CQ” followed by the repeater’s call sign
C	The station’s call sign followed by the word “monitoring”
D	The repeater call sign followed by the station’s call sign

11. - T2B09

Why are simplex channels designated in the VHF/UHF band plans?

Select	Answer
A	For working DX only
B	For contest operation
C	So stations within range of each other can communicate without tying up a repeater
D	So stations with simple transmitters can access the repeater without automated offset

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 email address of the originating station
C	The address of the intended recipient
D	Information needed to track the message

13. - T3A06

What is the meaning of the term “picket fencing”?

Select	Answer
A	Alternating transmissions during a net operation
B	Local vs long-distance communications
C	Rapid flutter on mobile signals due to multipath propagation
D	A type of ground system used with vertical antennas

14. - T3B03

What are the two components of a radio wave?

Select	Answer
A	Impedance and reactance
B	Electric and magnetic fields
C	Voltage and current
D	Ionizing and non-ionizing radiation

15. - T3C10

Which of the following bands may provide long-distance communications via the ionosphere’s F region during the peak of the sunspot cycle?

Select	Answer
A	23 centimeters
B	70 centimeters and 1.25 meters
C	6 and 10 meters
D	All these choices are correct

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	24.0 volts at 12 amperes
C	13.8 volts at 12 amperes
D	13.8 volts at 4 amperes

17. - T4B09

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

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

18. - T5A10

Which term describes the rate at which electrical energy is used?

Select	Answer
A	Resistance
B	Current
C	Power
D	Voltage

19. - T5B08

Which is equal to 1,000,000 picofarads?

Select	Answer
A	0.001 microfarads
B	1000 microfarads
C	1 microfarad
D	1,000,000,000 microfarads

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	23.8 watts
C	138 watts
D	0.7 watts

21. - T5D07

What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

Select	Answer
A	200 amperes
B	1.5 amperes
C	0.667 amperes
D	9600 amperes

22. - T6A04

What electrical component stores energy in an electric field?

Select	Answer
A	Inductor
B	Varistor
C	Diode
D	Capacitor

23. - T6B01

Which is true about forward voltage drop in a diode?

Select	Answer
A	It is lower in some diode types than in others
B	It is proportional to peak inverse voltage
C	It has no impact on the voltage delivered to the load
D	It indicates that the diode is defective

24. - T6C06

What is component 6 in figure T-2?

Select	Answer
A	Transistor
B	Regulator IC
C	Capacitor
D	Resistor

25. - T6D01

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

Select	Answer
A	Rectifier
B	Amplifier
C	Reflector
D	Transformer

26. - T7A10

What device increases the transmitted output power from a transceiver?

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

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 bypass capacitors on the microphone cable
D	Installing an RF preamplifier

28. - T7C01

What is the primary purpose of a dummy load?

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

29. - T7D08

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

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

30. - T8A03

Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

Select	Answer
A	SSB
B	DRM
C	FM
D	PM

31. - T8B11

Who may receive telemetry from a space station?

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

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	Send only the minimum information needed for proper identification and the contest exchange
B	Sign only the last two letters of your call if there are many other stations calling
C	All these choices are correct
D	Contact the station twice to be sure that you are in his log

33. - T8D08

Which of the following is included in packet radio transmissions?

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

34. - T9A01

What is a beam antenna?

Select	Answer
A	An antenna that reverses the phase of received signals
B	An omnidirectional antenna invented by Clarence Beam
C	An antenna that concentrates signals in one direction
D	An antenna built from aluminum I-beams

35. - T9B08

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

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

Figure T-2