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. - T0A11

What hazard exists in a power supply immediately after turning it off?

Select	Answer
A	Charge stored in filter capacitors
B	Leakage flux in the power transformer
C	Circulating currents in the dc filter
D	Voltage transients from kickback diodes

2. - T0B11

Which of the following establishes grounding requirements for an amateur radio tower or antenna?

Select	Answer
A	UL recommended practices
B	FAA tower lighting regulations
C	FCC Part 97 rules
D	Local electrical codes

3. - T0C12

How does RF radiation differ from ionizing radiation (radioactivity)?

Select	Answer
A	RF radiation is perfectly safe
B	RF radiation is limited in range to a few feet
C	RF radiation can only be detected with an RF dosimeter
D	RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA

4. - T1A01

Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

Select	Answer
A	Providing personal radio communications for as many citizens as possible
B	All these choices are correct
C	Advancing skills in the technical and communication phases of the radio art
D	Providing communications for international non-profit organizations

5. - T1B03

Which frequency is in the 6 meter amateur band?

Select	Answer
A	49.00 MHz
B	52.525 MHz
C	222.15 MHz
D	28.50 MHz

6. - T1C06

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

Select	Answer
A	From any vessel or craft located in international waters and documented or registered in the United States
B	From within any country that belongs to the International Telecommunication Union
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. - T1D10

How does the FCC define broadcasting for the Amateur Radio Service?

Select	Answer
A	Transmission of messages directed only to amateur operators
B	Two-way transmissions by amateur stations
C	Transmissions intended for reception by the general public
D	Any transmission made by the licensed station

8. - T1E09

Which of the following are required for remote control operation?

Select	Answer
A	All these choices are correct
B	A control operator is required at all times
C	The control operator must be at the control point
D	The control operator must indirectly manipulate the controls

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

10. - T2A09

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

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

11. - T2B05

What would cause your FM transmission audio to be distorted on voice peaks?

Select	Answer
A	Your transmit power is too high
B	You are talking too loudly
C	You need to talk louder
D	Your repeater offset is inverted

12. - T2C05

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

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

13. - T3A01

Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

Select	Answer
A	VHF ionospheric propagation is very sensitive to path length
B	All these choices are correct
C	Multipath propagation cancels or reinforces signals
D	The signal path encounters different concentrations of water vapor

14. - T3B06

What is the formula for converting frequency to approximate wavelength in meters?

Select	Answer
A	Wavelength in meters equals frequency in hertz divided by 300
B	Wavelength in meters equals frequency in hertz multiplied by 300
C	Wavelength in meters equals frequency in megahertz divided by 300
D	Wavelength in meters equals 300 divided by frequency in megahertz

15. - T3C07

What band is best suited for communicating via meteor scatter?

Select	Answer
A	6 meters
B	70 centimeters
C	33 centimeters
D	2 meters

16. - T4A03

Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

Select	Answer
A	To avoid RF interference
B	To minimize voltage drop when transmitting
C	To provide a good counterpoise for the antenna
D	All these choices are correct

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 entering the group’s identification code
C	By enabling the group’s CTCSS tone
D	By activating automatic identification

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Watts
B	Volts
C	Ohms
D	Amperes

19. - T5B12

Which is equal to 28400 kHz?

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

20. - T5C04

What is the unit of inductance?

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

21. - T5D02

What formula is used to calculate voltage in a circuit?

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

22. - T6A10

Which of the following battery chemistries is rechargeable?

Select	Answer
A	Lithium-ion
B	Nickel-metal hydride
C	All these choices are correct
D	Lead-acid

23. - T6B02

What electronic component allows current to flow in only one direction?

Select	Answer
A	Resistor
B	Diode
C	Driven element
D	Fuse

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Ground
B	Transmitter
C	Dummy load
D	Antenna

25. - T6D10

What is the function of component 2 in figure T-1?

Select	Answer
A	Supply electrical energy
B	Control the flow of current
C	Convert electrical energy into radio waves
D	Give off light when current flows through it

26. - T7A11

Where is an RF preamplifier installed?

Select	Answer
A	Between the antenna and receiver
B	At the output of the transmitter power amplifier
C	Between the transmitter and the antenna tuner
D	At the output of the receiver audio amplifier

27. - T7B10

What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

Select	Answer
A	Your transmitter is slightly off frequency
B	Your batteries are running low
C	You are in a bad location
D	All these choices are correct

28. - T7C03

What does a dummy load consist of?

Select	Answer
A	A non-inductive resistor mounted on a heat sink
B	A 50-ohm reactance used to terminate a transmission line
C	A high-gain amplifier and a TR switch
D	A low-voltage power supply and a DC relay

29. - T7D02

How is a voltmeter connected to a component to measure applied voltage?

Select	Answer
A	In series
B	In quadrature
C	In parallel
D	In phase

30. - T8A11

What is the approximate bandwidth required to transmit a CW signal?

Select	Answer
A	2.4 kHz
B	1000 Hz
C	150 Hz
D	15 kHz

31. - T8B07

What is Doppler shift in reference to satellite communications?

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

32. - T8C07

What is Voice Over Internet Protocol (VoIP)?

Select	Answer
A	A method of delivering voice communications over the internet using digital techniques
B	A technique employed to “spot” DX stations via the internet
C	A set of rules specifying how to identify your station when linked over the internet to another station
D	A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet

33. - T8D13

What is FT8?

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

34. - T9A10

In which direction does a half-wave dipole antenna radiate the strongest signal?

Select	Answer
A	Off the ends of the antenna
B	In the direction of the feed line
C	Equally in all directions
D	Broadside to the antenna

35. - T9B02

What is the most common impedance of coaxial cables used in amateur radio?

Select	Answer
A	8 ohms
B	12 ohms
C	50 ohms
D	600 ohms

Figure T-3

Figure T-1