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. - T0A05

Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

Select	Answer
A	The power supply ripple would greatly increase
B	All these choices are correct
C	Excessive current could cause a fire
D	The larger fuse would be likely to blow because it is rated for higher current

2. - T0B05

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

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

3. - T0C06

Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations?

Select	Answer
A	All these choices are correct
B	By calculation based on FCC OET Bulletin 65
C	By calculation based on computer modeling
D	By measurement of field strength using calibrated equipment

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	An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
D	A government transmitter marking the amateur radio band edges

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

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. - T1D11

When may an amateur station transmit without identifying on the air?

Select	Answer
A	When the transmissions are of a brief nature to make station adjustments
B	When the transmitted power level is below 1 watt
C	When transmitting signals to control model craft
D	When the transmissions are unmodulated

8. - T1E10

Which of the following is an example of remote control as defined in Part 97?

Select	Answer
A	Operating the station over the internet
B	All these choices are correct
C	Repeater operation
D	Controlling a model aircraft, boat, or car by amateur radio

9. - T1F02

How often must you identify with your FCC-assigned call sign when using tactical call signs such as “Race Headquarters”?

Select	Answer
A	At the end of each communication and every ten minutes during a communication
B	At the end of every transmission
C	Once during every hour
D	Never, the tactical call is sufficient

10. - T2A10

What is a band plan, beyond the privileges established by the FCC?

Select	Answer
A	A voluntary guideline for using different modes or activities within an amateur band
B	A list of available net frequencies
C	A plan devised by a club to indicate frequency band usage
D	A list of operating schedules

11. - T2B09

Why are simplex channels designated in the VHF/UHF band plans?

Select	Answer
A	For contest operation
B	So stations within range of each other can communicate without tying up a repeater
C	So stations with simple transmitters can access the repeater without automated offset
D	For working DX only

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	Operation by mobile or portable stations
C	Messages exchanged by net stations
D	Requests to activate the net by a served agency

13. - T3A11

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

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

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

15. - T3C07

What band is best suited for communicating via meteor scatter?

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

16. - T4A03

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

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

17. - T4B03

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

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Ohms
B	Siemens
C	Mhos
D	Coulombs

19. - T5B05

Which is equal to 500 milliwatts?

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

20. - T5C08

What is the formula used to calculate electrical power (P) in a DC circuit?

Select	Answer
A	P = E – I
B	P = E / I
C	P = I + E
D	P = I  E

21. - T5D03

What formula is used to calculate resistance in a circuit?

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

22. - T6A07

What electrical component is typically constructed as a coil of wire?

Select	Answer
A	Switch
B	Capacitor
C	Diode
D	Inductor

23. - T6B10

Which of the following can provide power gain?

Select	Answer
A	Reactor
B	Transformer
C	Resistor
D	Transistor

24. - T6C08

What is component 9 in figure T-2?

Select	Answer
A	Variable resistor
B	Variable transformer
C	Variable inductor
D	Variable capacitor

25. - T6D08

Which of the following is combined with an inductor to make a resonant circuit?

Select	Answer
A	Zener diode
B	Capacitor
C	Resistor
D	Potentiometer

26. - T7A04

Which term describes the ability of a receiver to discriminate between multiple signals?

Select	Answer
A	Discrimination ratio
B	Selectivity
C	Sensitivity
D	Harmonic distortion

27. - T7B05

How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

Select	Answer
A	Switch the transmitter from FM to SSB
B	Block the interfering signal with a filter on the amateur transmitter
C	Switch the transmitter to a narrow-band mode
D	Block the amateur signal with a filter at the antenna input of the affected receiver

28. - T7C07

What happens to power lost in a feed line?

Select	Answer
A	It is radiated as harmonics
B	It distorts the signal
C	It is converted into heat
D	It increases the SWR

29. - T7D01

Which instrument would you use to measure electric potential?

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

30. - T8A03

Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

Select	Answer
A	FM
B	DRM
C	PM
D	SSB

31. - T8B09

What causes spin fading of satellite signals?

Select	Answer
A	Rotation of the satellite and its antennas
B	Circular polarized noise interference radiated from the sun
C	Interfering signals within the satellite uplink band
D	Doppler shift of the received signal

32. - T8C11

What is an amateur radio station that connects other amateur stations to the internet?

Select	Answer
A	A repeater
B	A beacon
C	A gateway
D	A digipeater

33. - T8D04

What type of transmission is indicated by the term "NTSC?"

Select	Answer
A	A Normal Transmission mode in Static Circuit
B	A frame compression scheme for TV signals
C	An analog fast-scan color TV signal
D	A special mode for satellite uplink

34. - T9A02

Which of the following describes a type of antenna loading?

Select	Answer
A	Strengthening the radiating elements of a beam antenna to better resist wind damage
B	Electrically lengthening by inserting inductors in radiating elements
C	Installing a spring in the base of a mobile vertical antenna to make it more flexible
D	Inserting a resistor in the radiating portion of the antenna to make it resonant

35. - T9B02

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

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

Figure T-2