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 disrupt the electrical functions of cells
C	It may cause injury by heating tissue
D	All these choices are correct

2. - T0B05

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

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

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

4. - T1A07

What is the FCC Part 97 definition of a space station?

Select	Answer
A	A manned satellite orbiting Earth
B	Any satellite orbiting Earth
C	An amateur station located more than 50 km above Earth's surface
D	An amateur station using amateur radio satellites for relay of signals

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	So that modulation sidebands do not extend beyond the band edge
C	All these choices are correct
D	To allow for transmitter frequency drift

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 inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
C	Failure to have a copy of your license available at your station
D	Failure to provide and maintain a correct email address with the FCC

7. - T1D01

With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

Select	Answer
A	Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications
B	Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
C	Any country banned from making such communications by the American Radio Relay League (ARRL)
D	Any country banned from such communications by the International Amateur Radio Union (IARU)

8. - T1E04

What determines the transmitting frequency privileges of an amateur station?

Select	Answer
A	The frequencies printed on the license grant
B	The frequency authorized by the frequency coordinator
C	The class of operator license held by the control operator
D	The highest class of operator license held by anyone on the premises

9. - T1F09

What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?

Select	Answer
A	Message forwarding station
B	Beacon station
C	Earth station
D	Repeater station

10. - T2A06

Which of the following is required when making on-the-air test transmissions?

Select	Answer
A	All these choices are correct
B	Notify the FCC of the transmissions
C	Identify the transmitting station
D	Conduct tests only between 10 p.m. and 6 a.m. local time

11. - T2B11

Which Q signal indicates that you are changing frequency?

Select	Answer
A	QSY
B	QSL
C	QRU
D	QRZ

12. - T2C04

What is RACES?

Select	Answer
A	An international radio experimentation society
B	An FCC part 97 amateur radio service for civil defense communications during national emergencies
C	An emergency organization combining amateur radio and citizens band operators and frequencies
D	A radio contest held in a short period, sometimes called a “sprint”

13. - T3A03

What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?

Select	Answer
A	Vertical
B	Left-hand circular
C	Horizontal
D	Right-hand circular

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 miles per hour
C	150,000 meters per second
D	300,000,000 meters per second

15. - T3C11

Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

Select	Answer
A	Radio waves are not blocked by dust particles
B	Radio waves are blocked by dust particles
C	The atmosphere refracts radio waves slightly
D	Radio signals move somewhat faster than the speed of light

16. - T4A10

What function is performed with a transceiver and a digital mode hot spot?

Select	Answer
A	RTTY encoding and decoding without a computer
B	Communication using digital voice or data systems via the internet
C	FT8 digital communications via AFSK
D	High-speed digital communications for meteor scatter

17. - T4B03

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

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Siemens
B	Ohms
C	Mhos
D	Coulombs

19. - T5B02

Which is equal to 1,500,000 hertz?

Select	Answer
A	150 kHz
B	1500 MHz
C	1500 kHz
D	15 GHz

20. - T5C02

What is the unit of capacitance?

Select	Answer
A	The volt
B	The henry
C	The ohm
D	The farad

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	9600 amperes
B	1.5 amperes
C	200 amperes
D	0.667 amperes

22. - T6A01

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

Select	Answer
A	Inverter
B	Resistor
C	Transformer
D	Inductor

23. - T6B07

What causes a light-emitting diode (LED) to emit light?

Select	Answer
A	Reverse current
B	Forward current
C	Inductively-coupled RF signal
D	Capacitively-coupled RF signal

24. - T6C03

What is component 2 in figure T-1?

Select	Answer
A	Connector
B	Transistor
C	Indicator lamp
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	Reflector
C	Amplifier
D	Transformer

26. - T7A06

What device converts the RF input and output of a transceiver to another band?

Select	Answer
A	High-pass filter
B	Low-pass filter
C	Phase converter
D	Transverter

27. - T7B02

What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

Select	Answer
A	The audio amplifier of the transmitter is overloaded
B	The deviation of an FM transmitter is set too low
C	The microphone gain of the transmitter is turned up too high
D	The receiver is unable to reject strong signals outside the AM or FM band

28. - T7C09

Which of the following causes failure of coaxial cables?

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

29. - T7D04

Which instrument is used to measure electric current?

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

30. - T8A12

Which of the following is a disadvantage of FM compared with single sideband?

Select	Answer
A	Only one signal can be received at a time
B	All these choices are correct
C	FM signals are harder to tune
D	Voice quality is poorer

31. - T8B07

What is Doppler shift in reference to satellite communications?

Select	Answer
A	A change in the satellite orbit
B	An observed change in signal frequency caused by relative motion between the satellite and Earth station
C	A mode where the satellite receives signals on one band and transmits on another
D	A special digital communications mode for some satellites

32. - T8C08

What is the Internet Radio Linking Project (IRLP)?

Select	Answer
A	A system for informing amateurs in real time of the frequency of active DX stations
B	A system for providing access to websites via amateur radio
C	A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
D	A technique for measuring signal strength of an amateur transmitter via the internet

33. - T8D13

What is FT8?

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

34. - T9A12

What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

Select	Answer
A	It has more gain than a 1/4-wavelength antenna
B	It eliminates distortion caused by reflected signals
C	It has 10 times the power gain of a 1/4 wavelength whip
D	It radiates at a very high angle

35. - T9B06

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

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

Figure T-1