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. - T0A12

Which of the following precautions should be taken when measuring high voltages with a voltmeter?

Select	Answer
A	Ensure that the voltmeter and leads are rated for use at the voltages to be measured
B	Ensure that the voltmeter has very low impedance
C	Ensure that the circuit is grounded through the voltmeter
D	Ensure that the voltmeter is set to the correct frequency

2. - T0B02

What is required when climbing an antenna tower?

Select	Answer
A	Always wear an approved climbing harness
B	Use appropriate tie-off to the tower at all times
C	Have sufficient training on safe tower climbing techniques
D	All these choices are correct

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	Lower frequency RF fields have more energy than higher frequency fields
B	The human body absorbs more RF energy at some frequencies than at others
C	Lower frequency RF fields do not penetrate the human body
D	Higher frequency RF fields are transient in nature

4. - T1A10

What is the Radio Amateur Civil Emergency Service (RACES)?

Select	Answer
A	A radio service using amateur frequencies for emergency management or civil defense communications
B	An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
C	A radio service using amateur stations for emergency management or civil defense communications
D	All these choices are correct

5. - T1B01

Which of the following frequency ranges are available for phone operation by Technician licensees?

Select	Answer
A	28.500 MHz to 28.600 MHz
B	28.300 MHz to 28.500 MHz
C	28.100 MHz to 28.300 MHz
D	28.050 MHz to 28.150 MHz

6. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit?

Select	Answer
A	From within any country that belongs to the International Telecommunication Union
B	From any vessel or craft located in international waters and documented or registered in the United States
C	From within any country that is a member of the United Nations
D	From anywhere within International Telecommunication Union (ITU) Regions 2 and 3

7. - T1D04

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

Select	Answer
A	When incidental to an authorized retransmission of manned spacecraft communications
B	When the music is transmitted above 1280 MHz
C	When transmissions are limited to less than three minutes per hour
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	Only the station licensee
B	The control operator and the station licensee
C	Only the control operator
D	All licensed amateurs who are present at the operation

9. - T1F06

Which of the following self-assigned indicators are acceptable when using a phone transmission?

Select	Answer
A	KL7CC stroke W3
B	KL7CC slash W3
C	KL7CC slant W3
D	All these choices are correct

10. - T2A07

What is meant by "repeater offset”?

Select	Answer
A	The repeater station identification is done on a separate frequency
B	The difference between a repeater’s transmit and receive frequencies
C	The repeater has a time delay to prevent interference
D	The number of simultaneous transmit frequencies used by a repeater

11. - T2B08

Which of the following applies when two stations transmitting on the same frequency interfere with each other?

Select	Answer
A	Use subaudible tones so both stations can share the frequency
B	Both stations should choose another frequency to avoid conflict
C	The stations should negotiate continued use of the frequency
D	Interference is inevitable, so no action is required

12. - T2C06

What is the Amateur Radio Emergency Service (ARES)?

Select	Answer
A	A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
B	A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency
C	A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies
D	A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service

13. - T3A11

Which region of the atmosphere can refract or bend HF and VHF radio waves?

Select	Answer
A	The mesosphere
B	The stratosphere
C	The troposphere
D	The ionosphere

14. - T3B08

What frequency range is referred to as VHF?

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

15. - T3C05

Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

Select	Answer
A	Faraday rotation
B	Doppler shift
C	Quantum tunneling
D	Knife-edge diffraction

16. - T4A08

Which of the following conductors is preferred for bonding at RF?

Select	Answer
A	Twisted-pair cable
B	Steel wire
C	Flat copper strap
D	Copper braid removed from coaxial cable

17. - T4B05

What does the scanning function of an FM transceiver do?

Select	Answer
A	Prevents interference to nearby repeaters
B	Checks for messages left on a digital bulletin board
C	Tunes through a range of frequencies to check for activity
D	Checks incoming signal deviation

18. - T5A05

What is the electrical term for the force that causes electron flow?

Select	Answer
A	Inductance
B	Voltage
C	Ampere-hours
D	Capacitance

19. - T5B02

Which is equal to 1,500,000 hertz?

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

20. - T5C12

What is impedance?

Select	Answer
A	The inverse of resistance
B	The Q or Quality Factor of a component
C	The power handling capability of a component
D	The opposition to AC current flow

21. - T5D04

What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

Select	Answer
A	30 ohms
B	3 ohms
C	270 ohms
D	93 ohms

22. - T6A05

What type of electrical component consists of conductive surfaces separated by an insulator?

Select	Answer
A	Oscillator
B	Resistor
C	Potentiometer
D	Capacitor

23. - T6B06

How is the cathode lead of a semiconductor diode often marked on the package?

Select	Answer
A	With the letter K
B	With the word "cathode"
C	With the letter C
D	With a stripe

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Dummy load
B	Ground
C	Transmitter
D	Antenna

25. - T6D01

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

Select	Answer
A	Amplifier
B	Transformer
C	Reflector
D	Rectifier

26. - T7A09

What is the function of the SSB/CW-FM switch on a VHF power amplifier?

Select	Answer
A	Reduce the received signal noise
B	Change the mode of the transmitted signal
C	Set the amplifier for proper operation in the selected mode
D	Change the frequency range of the amplifier to operate in the proper segment of the band

27. - T7B11

What is a symptom of RF feedback in a transmitter or transceiver?

Select	Answer
A	Frequent blowing of power supply fuses
B	The transmitter will not stay on the desired frequency
C	Excessive SWR at the antenna connection
D	Reports of garbled, distorted, or unintelligible voice transmissions

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 resistant jackets prevent harmonic radiation
D	Ultraviolet and RF signals can mix, causing interference

29. - T7D10

What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

Select	Answer
A	Increasing resistance with time
B	Steady full-scale reading
C	Alternating between open and short circuit
D	Decreasing resistance with time

30. - T8A12

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

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

31. - T8B01

What telemetry information is typically transmitted by satellite beacons?

Select	Answer
A	Time of day accurate to plus or minus 1/10 second
B	The signal strength of received signals
C	All these choices are correct
D	Health and status of the satellite

32. - T8C10

What is required before using the EchoLink system?

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

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	Weak signal propagation beacons
C	Meteor scatter
D	All these choices are correct

34. - T9A08

What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

Select	Answer
A	112
B	50
C	19
D	12

35. - T9B09

What can cause erratic changes in SWR?

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

Figure T-3