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

2. - T0B07

Which of the following is an important safety rule to remember when using a crank-up tower?

Select	Answer
A	This type of tower must not be climbed unless it is retracted, or mechanical safety locking devices have been installed
B	This type of tower must never be grounded
C	This type of tower must never be painted
D	All these choices are correct

3. - T0C12

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

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

4. - T1A04

How many operator/primary station license grants may be held by any one person?

Select	Answer
A	One for each band on which the person plans to operate
B	One for each permanent station location from which the person plans to operate
C	One
D	No more than two

5. - T1B06

On which HF bands does a Technician class operator have phone privileges?

Select	Answer
A	80 meter, 40 meter, 15 meter, and 10 meter bands
B	None
C	10 meter band only
D	30 meter band only

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 have a copy of your license available at your station
D	Failure to provide and maintain a correct email address with the FCC

7. - T1D07

What types of amateur stations can automatically retransmit the signals of other amateur stations?

Select	Answer
A	Repeater, auxiliary, or space stations
B	Beacon, repeater, or space stations
C	Auxiliary, beacon, or Earth stations
D	Earth, repeater, or space stations

8. - T1E01

When may an amateur station transmit without a control operator?

Select	Answer
A	When the transmitting station is an auxiliary station
B	Never
C	When using automatic control, such as in the case of a repeater
D	When the station licensee is away and another licensed amateur is using the station

9. - T1F01

When must the station and its records be available for FCC inspection?

Select	Answer
A	Only when presented with a valid warrant by an FCC official or government agent
B	At any time upon request by an FCC representative
C	At any time ten days after notification by the FCC of such an inspection
D	At any time after written notification by the FCC of such inspection

10. - T2A09

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

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

11. - T2B02

What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

Select	Answer
A	Tone burst
B	DTMF
C	CTCSS
D	Carrier squelch

12. - T2C08

Which of the following is a characteristic of good traffic handling?

Select	Answer
A	All these choices are correct
B	Ensuring that any newsworthy messages are relayed to the news media
C	Making decisions as to whether messages are worthy of relay or delivery
D	Passing messages exactly as received

13. - T3A10

What effect does multi-path propagation have on data transmissions?

Select	Answer
A	No significant changes will occur if the signals are transmitted using FM
B	Transmission rates must be decreased by a factor equal to the number of separate paths observed
C	Error rates are likely to increase
D	Transmission rates must be increased by a factor equal to the number of separate paths observed

14. - T3B04

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

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

15. - T3C11

Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

Select	Answer
A	The atmosphere refracts radio waves slightly
B	Radio signals move somewhat faster than the speed of light
C	Radio waves are not blocked by dust particles
D	Radio waves are blocked by dust particles

16. - T4A08

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

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

17. - T4B05

What does the scanning function of an FM transceiver do?

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

18. - T5A06

What is the unit of frequency?

Select	Answer
A	Hertz
B	Farad
C	Henry
D	Tesla

19. - T5B13

Which is equal to 2425 MHz?

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

20. - T5C05

What is the unit of impedance?

Select	Answer
A	The coulomb
B	The ampere
C	The volt
D	The ohm

21. - T5D12

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

Select	Answer
A	12 volts
B	8 volts
C	0.2 volts
D	20 volts

22. - T6A10

Which of the following battery chemistries is rechargeable?

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

23. - T6B07

What causes a light-emitting diode (LED) to emit light?

Select	Answer
A	Reverse current
B	Forward current
C	Capacitively-coupled RF signal
D	Inductively-coupled RF signal

24. - T6C02

What is component 1 in figure T-1?

Select	Answer
A	Transistor
B	Connector
C	Battery
D	Resistor

25. - T6D04

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

Select	Answer
A	Potentiometer
B	Meter
C	Relay
D	Transistor

26. - T7A08

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

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

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

28. - T7C11

What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

Select	Answer
A	It cannot be used for VHF or UHF antennas
B	It cannot be used at below freezing temperatures
C	It requires special techniques to prevent moisture in the cable
D	It has more loss per foot

29. - T7D11

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

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

30. - T8A10

What is the approximate bandwidth of AM fast-scan TV transmissions?

Select	Answer
A	About 6 MHz
B	About 3 MHz
C	About 1 MHz
D	More than 10 MHz

31. - T8B04

What mode of transmission is commonly used by amateur radio satellites?

Select	Answer
A	All these choices are correct
B	SSB
C	FM
D	CW/data

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. - T8D12

Which of the following best describes an amateur radio mesh network?

Select	Answer
A	An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
B	A wide-bandwidth digital voice mode employing DMR protocols
C	An internet linking protocol used to network repeaters
D	A satellite communications network using modified commercial satellite TV hardware

34. - T9A06

Which of the following types of antenna offers the greatest gain?

Select	Answer
A	Yagi
B	Isotropic
C	5/8 wave vertical
D	J pole

35. - T9B05

What happens as the frequency of a signal in coaxial cable is increased?

Select	Answer
A	The characteristic impedance increases
B	The loss increases
C	The loss decreases
D	The characteristic impedance decreases

Figure T-1