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. - T0A01

Which of the following is a safety hazard of a 12-volt storage battery?

Select	Answer
A	Touching both terminals with the hands can cause electrical shock
B	Shorting the terminals can cause burns, fire, or an explosion
C	All these choices are correct
D	RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas

2. - T0B05

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

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

3. - T0C01

What type of radiation are radio signals?

Select	Answer
A	Non-ionizing radiation
B	Alpha radiation
C	Gamma radiation
D	Ionizing radiation

4. - T1A06

What is the FCC Part 97 definition of a beacon?

Select	Answer
A	A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
B	A bulletin sent by the FCC to announce a national emergency
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. - T1B05

How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

Select	Answer
A	Spread spectrum only
B	Fast-scan television only
C	Fixed digital message forwarding systems only
D	Emergency traffic only

6. - T1C02

Who may select a desired call sign under the vanity call sign rules?

Select	Answer
A	Only a licensed amateur with a General or Amateur Extra Class license
B	Only a licensed amateur who has been licensed continuously for more than 10 years
C	Any licensed amateur
D	Only a licensed amateur with an Amateur Extra Class license

7. - T1D08

In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station?

Select	Answer
A	When the communication is related to the sale of amateur equipment by the control operator's employer
B	When the communication is incidental to classroom instruction at an educational institution
C	All these choices are correct
D	When the communication is made to obtain emergency information for a local broadcast station

8. - T1E04

What determines the transmitting frequency privileges of an amateur station?

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

9. - T1F07

Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

Select	Answer
A	All these choices are correct
B	The foreign station must be in a country with which the U.S. has a third party agreement
C	The person must be a U.S. citizen
D	The licensed control operator must do the station identification

10. - T2A05

How should you respond to a station calling CQ?

Select	Answer
A	Transmit your call sign followed by the other station’s call sign
B	Transmit "CQ" followed by the other station’s call sign
C	Transmit the other station’s call sign followed by your call sign
D	Transmit a signal report followed by your call sign

11. - T2B06

What type of signaling uses pairs of audio tones?

Select	Answer
A	DTMF
B	D-STAR
C	GPRS
D	CTCSS

12. - T2C05

What does the term “traffic” refer to in net operation?

Select	Answer
A	Messages exchanged by net stations
B	Requests to activate the net by a served agency
C	Operation by mobile or portable stations
D	The number of stations checking in and out of a net

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

14. - T3B04

What is the velocity of a radio wave traveling through free space?

Select	Answer
A	Speed of sound
B	Speed of light
C	Speed that increases as the frequency increases
D	Speed inversely proportional to its wavelength

15. - T3C02

What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

Select	Answer
A	Long-distance ionospheric propagation is far more common on HF
B	There is less atmospheric interference (static) on HF
C	HF antennas are generally smaller
D	HF accommodates wider bandwidth signals

16. - T4A12

What is an electronic keyer?

Select	Answer
A	A device for switching antennas from transmit to receive
B	An interlock to prevent unauthorized use of a radio
C	A device that assists in manual sending of Morse code
D	A device for voice activated switching from receive to transmit

17. - T4B12

What is the result of tuning an FM receiver above or below a signal’s frequency?

Select	Answer
A	Change in audio pitch
B	Sideband inversion
C	Generation of a heterodyne tone
D	Distortion of the signal’s audio

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Watts
B	Ohms
C	Amperes
D	Volts

19. - T5B05

Which is equal to 500 milliwatts?

Select	Answer
A	5 watts
B	0.02 watts
C	0.5 watts
D	50 watts

20. - T5C11

How much current is required to deliver 120 watts at a voltage of 12 volts DC?

Select	Answer
A	132 amperes
B	10 amperes
C	0.1 amperes
D	12 amperes

21. - T5D01

What formula is used to calculate current in a circuit?

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

22. - T6A11

Which of the following battery chemistries is not rechargeable?

Select	Answer
A	Lithium-ion
B	Nickel-cadmium
C	Lead-acid
D	Carbon-zinc

23. - T6B12

What are the names of the electrodes of a bipolar junction transistor?

Select	Answer
A	Signal, bias, power
B	Input, output, supply
C	Emitter, base, collector
D	Pole one, pole two, output

24. - T6C01

What is the name of an electrical wiring diagram that uses standard component symbols?

Select	Answer
A	Bill of materials
B	Flow chart
C	Connector pinout
D	Schematic

25. - T6D06

What component changes 120 V AC power to a lower AC voltage for other uses?

Select	Answer
A	Transformer
B	Diode
C	Transistor
D	Variable capacitor

26. - T7A08

Which of the following describes combining speech with an RF carrier signal?

Select	Answer
A	Impedance matching
B	Low-pass filtering
C	Modulation
D	Oscillation

27. - T7B06

Which of the following actions should you take if a neighbor tells you that your station’s transmissions are interfering with their radio or TV reception?

Select	Answer
A	Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
B	Immediately turn off your transmitter and contact the nearest FCC office for assistance
C	All these choices are correct
D	Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated

28. - T7C01

What is the primary purpose of a dummy load?

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

29. - T7D11

Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

Select	Answer
A	Ensure that the applied voltages are correct
B	Ensure that the circuit is operating at the correct frequency
C	Ensure that the circuit is grounded
D	Ensure that the circuit is not powered

30. - T8A08

What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

Select	Answer
A	1 kHz
B	15 kHz
C	6 kHz
D	3 kHz

31. - T8B11

Who may receive telemetry from a space station?

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

32. - T8C01

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

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

33. - T8D13

What is FT8?

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

34. - T9A04

What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

Select	Answer
A	It transmits only circularly polarized signals
B	It is mechanically fragile
C	It has low efficiency
D	All these choices are correct

35. - T9B04

What is the major function of an antenna tuner (antenna coupler)?

Select	Answer
A	It helps a receiver automatically tune in weak stations
B	It matches the antenna system impedance to the transceiver's output impedance
C	It automatically selects the proper antenna for the frequency band being used
D	It allows an antenna to be used on both transmit and receive