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. - T0A02

What health hazard is presented by electrical current flowing through the body?

Select	Answer
A	It may cause involuntary muscle contractions
B	It may cause injury by heating tissue
C	All these choices are correct
D	It may disrupt the electrical functions of cells

2. - T0B05

What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

Select	Answer
A	Provide a ground path for lightning strikes
B	Secure the guy line if the turnbuckle breaks
C	Provide an ability to measure for proper tensioning
D	Prevent loosening of the turnbuckle from vibration

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

4. - T1A11

When is willful interference to other amateur radio stations permitted?

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

5. - T1B09

Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

Select	Answer
A	To allow for calibration error in the transmitter frequency display
B	All these choices are correct
C	To allow for transmitter frequency drift
D	So that modulation sidebands do not extend beyond the band edge

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 within any country that belongs to the International Telecommunication Union
C	From any vessel or craft located in international waters and documented or registered in the United States
D	From within any country that is a member of the United Nations

7. - T1D02

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

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

8. - T1E06

When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

Select	Answer
A	When designated as the control operator by an Amateur Extra Class licensee
B	As part of a multi-operator contest team
C	When using a club station whose trustee holds an Amateur Extra Class license
D	At no time

9. - T1F10

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

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

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	Say "break, break," then say the station's call sign
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	Wait for the station to call CQ, then answer

11. - T2B04

Which of the following could be the reason you are unable to access a repeater whose output you can hear?

Select	Answer
A	You are using the wrong CTCSS tone
B	You are using the wrong DCS code
C	Improper transceiver offset
D	All these choices are correct

12. - T2C03

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

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

13. - T3A10

What effect does multi-path propagation have on data transmissions?

Select	Answer
A	Error rates are likely to increase
B	Transmission rates must be increased by a factor equal to the number of separate paths observed
C	Transmission rates must be decreased by a factor equal to the number of separate paths observed
D	No significant changes will occur if the signals are transmitted using FM

14. - T3B10

What frequency range is referred to as HF?

Select	Answer
A	30 to 300 MHz
B	300 to 3000 kHz
C	3 to 30 MHz
D	300 to 3000 MHz

15. - T3C06

What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?

Select	Answer
A	D region refraction
B	Tropospheric ducting
C	F2 region refraction
D	Faraday rotation

16. - T4A06

What signals are used in a computer-radio interface for digital mode operation?

Select	Answer
A	Receive audio, transmit audio, and transmitter keying
B	Receive and transmit mode, status, and location
C	Antenna and RF power
D	NMEA GPS location and DC power

17. - T4B03

How is squelch adjusted so that a weak FM signal can be heard?

Select	Answer
A	Set the squelch threshold so that receiver output audio is on all the time
B	Turn on the anti-squelch function
C	Turn up the audio level until it overcomes the squelch threshold
D	Enable squelch enhancement

18. - T5A09

Which of the following describes alternating current?

Select	Answer
A	Current that alternates between a negative direction and zero
B	Current that alternates between a positive direction and zero
C	Current that alternates between positive and negative directions
D	All these answers are correct

19. - T5B12

Which is equal to 28400 kHz?

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

20. - T5C08

What is the formula used to calculate electrical power (P) in a DC circuit?

Select	Answer
A	P = E – I
B	P = I  E
C	P = E / I
D	P = I + E

21. - T5D03

What formula is used to calculate resistance in a circuit?

Select	Answer
A	R = E - I
B	R = E / I
C	R = E x I
D	R = E + I

22. - T6A07

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

Select	Answer
A	Capacitor
B	Diode
C	Inductor
D	Switch

23. - T6B08

What does the abbreviation FET stand for?

Select	Answer
A	Frequency Emission Transmitter
B	Field Effect Transistor
C	Fast Electron Transistor
D	Free Electron Transmitter

24. - T6C12

Which of the following is accurately represented in electrical schematics?

Select	Answer
A	Physical appearance of components
B	Component connections
C	All these choices are correct
D	Wire lengths

25. - T6D11

Which of the following is a resonant or tuned circuit?

Select	Answer
A	A circuit designed to provide high-fidelity audio
B	An inductor and a capacitor in series or parallel
C	A linear voltage regulator
D	A resistor circuit used for reducing standing wave ratio

26. - T7A10

What device increases the transmitted output power from a transceiver?

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

27. - T7B08

What should you do if something in a neighbor’s home is causing harmful interference to your amateur station?

Select	Answer
A	Work with your neighbor to identify the offending device
B	All these choices are correct
C	Make sure your station meets the standards of good amateur practice
D	Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference

28. - T7C09

Which of the following causes failure of coaxial cables?

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

29. - T7D01

Which instrument would you use to measure electric potential?

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

30. - T8A01

Which of the following is a form of amplitude modulation?

Select	Answer
A	Packet radio
B	Single sideband
C	Phase shift keying (PSK)
D	Spread spectrum

31. - T8B05

What is a satellite beacon?

Select	Answer
A	The primary transmit antenna on the satellite
B	A reflective surface on the satellite
C	An indicator light that shows where to point your antenna
D	A transmission from a satellite that contains status information

32. - T8C01

Which of the following methods is used to locate sources of noise interference or jamming?

Select	Answer
A	Doppler radar
B	Phase locking
C	Echolocation
D	Radio direction finding

33. - T8D13

What is FT8?

Select	Answer
A	A wideband FM voice mode
B	A digital slow-scan TV mode with forward error correction and automatic color compensation
C	An eight channel multiplex mode for FM repeaters
D	A digital mode capable of low signal-to-noise operation

34. - T9A02

Which of the following describes a type of antenna loading?

Select	Answer
A	Electrically lengthening by inserting inductors in radiating elements
B	Inserting a resistor in the radiating portion of the antenna to make it resonant
C	Installing a spring in the base of a mobile vertical antenna to make it more flexible
D	Strengthening the radiating elements of a beam antenna to better resist wind damage

35. - T9B09

What can cause erratic changes in SWR?

Select	Answer
A	Local thunderstorm
B	Overload from a strong local station
C	Loose connection in the antenna or feed line
D	Over-modulation