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. - T0A06

What is a good way to guard against electrical shock at your station?

Select	Answer
A	Use three-wire cords and plugs for all AC powered equipment
B	Install mechanical interlocks in high-voltage circuits
C	Connect all AC powered station equipment to a common safety ground
D	All these choices are correct

2. - T0B06

What is the minimum safe distance from a power line to allow when installing an antenna?

Select	Answer
A	Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
B	Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
C	1/2 wavelength at the operating frequency
D	The height of the power line above ground

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	The human body absorbs more RF energy at some frequencies than at others
B	Lower frequency RF fields do not penetrate the human body
C	Lower frequency RF fields have more energy than higher frequency fields
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	All these choices are correct
C	An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
D	A radio service using amateur stations for emergency management or civil defense communications

5. - T1B07

Which of the following VHF/UHF band segments are limited to CW only?

Select	Answer
A	902.0 MHz to 902.1 MHz
B	All these choices are correct
C	219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
D	50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

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 inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
B	Failure to obtain FCC type acceptance prior to using a home-built transmitter
C	Failure to provide and maintain a correct email address with the FCC
D	Failure to have a copy of your license available at your station

7. - T1D09

When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

Select	Answer
A	When such communications are directly related to the immediate safety of human life or protection of property
B	When broadcasting communications to or from the space shuttle
C	Never
D	Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network

8. - T1E08

Which of the following is an example of automatic control?

Select	Answer
A	Controlling a station over the internet
B	Using a computer or other device to send CW automatically
C	Repeater operation
D	Using a computer or other device to identify automatically

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	Earth station
C	Beacon 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. - T2B12

What is the purpose of the color code used on DMR repeater systems?

Select	Answer
A	Defines the frequency pair to use
B	Defines the minimum signal level required for access
C	Must match the repeater color code for access
D	Identifies the codec used

12. - T2C07

Which of the following is standard practice when you participate in a net?

Select	Answer
A	Record the time of each of your transmissions
B	All these choices are correct
C	Unless you are reporting an emergency, transmit only when directed by the net control station
D	When first responding to the net control station, transmit your call sign, name, and address as in the FCC database

13. - T3A06

What is the meaning of the term “picket fencing”?

Select	Answer
A	Alternating transmissions during a net operation
B	Rapid flutter on mobile signals due to multipath propagation
C	Local vs long-distance communications
D	A type of ground system used with vertical antennas

14. - T3B04

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

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

15. - T3C03

What is a characteristic of VHF signals received via auroral backscatter?

Select	Answer
A	They occur only during winter nighttime hours
B	They are distorted and signal strength varies considerably
C	They are often received from 10,000 miles or more
D	They are generally strongest when your antenna is aimed west

16. - T4A09

How can you determine the length of time that equipment can be powered from a battery?

Select	Answer
A	Divide the battery ampere-hour rating by the average current draw of the equipment
B	Divide the watt-hour rating of the battery by the peak power consumption of the equipment
C	Multiply the square of the current rating of the battery by the input resistance of the equipment
D	Multiply the watts per hour consumed by the equipment by the battery power rating

17. - T4B10

Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

Select	Answer
A	5000 Hz
B	500 Hz
C	1000 Hz
D	2400 Hz

18. - T5A11

What type of current flow is opposed by resistance?

Select	Answer
A	RF current
B	Alternating current
C	All these choices are correct
D	Direct current

19. - T5B13

Which is equal to 2425 MHz?

Select	Answer
A	2.425 GHz
B	2425 GHz
C	24.25 GHz
D	0.002425 GHz

20. - T5C01

What describes the ability to store energy in an electric field?

Select	Answer
A	Inductance
B	Capacitance
C	Resistance
D	Tolerance

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. - T6A06

What type of electrical component stores energy in a magnetic field?

Select	Answer
A	Varistor
B	Diode
C	Capacitor
D	Inductor

23. - T6B08

What does the abbreviation FET stand for?

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

24. - T6C06

What is component 6 in figure T-2?

Select	Answer
A	Regulator IC
B	Resistor
C	Capacitor
D	Transistor

25. - T6D04

Which of the following displays an electrical quantity as a numeric value?

Select	Answer
A	Transistor
B	Potentiometer
C	Relay
D	Meter

26. - T7A01

Which term describes the ability of a receiver to detect the presence of a signal?

Select	Answer
A	Linearity
B	Selectivity
C	Sensitivity
D	Total Harmonic Distortion

27. - T7B07

Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

Select	Answer
A	Installing an RF preamplifier
B	Using double-shielded coaxial cable
C	Installing a band-reject filter
D	Installing bypass capacitors on the microphone cable

28. - T7C09

Which of the following causes failure of coaxial cables?

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

29. - T7D03

When configured to measure current, how is a multimeter connected to a component?

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

30. - T8A01

Which of the following is a form of amplitude modulation?

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

31. - T8B05

What is a satellite beacon?

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

32. - T8C03

What operating activity involves contacting as many stations as possible during a specified period?

Select	Answer
A	Contesting
B	Net operations
C	Public service events
D	Simulated emergency exercises

33. - T8D06

What does the abbreviation "PSK" mean?

Select	Answer
A	Packet Short Keying
B	Phased Slide Keying
C	Phase Shift Keying
D	Pulse Shift Keying

34. - T9A10

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

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

35. - T9B02

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

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

Figure T-2