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. - T0A10

What hazard is caused by charging or discharging a battery too quickly?

Select	Answer
A	Half-wave rectification
B	Inverse memory effect
C	Excess output ripple
D	Overheating or out-gassing

2. - T0B06

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

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

3. - T0C11

What is the definition of duty cycle during the averaging time for RF exposure?

Select	Answer
A	The percentage of time that a transmitter is not transmitting
B	The difference between the PEP and average power output of a transmitter
C	The percentage of time that a transmitter is transmitting
D	The difference between the lowest power output and the highest power output of a transmitter

4. - T1A10

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

Select	Answer
A	A radio service using amateur stations 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 frequencies for emergency management or civil defense communications

5. - T1B02

Which amateurs may contact the International Space Station (ISS) on VHF bands?

Select	Answer
A	Any amateur holding a Technician class or higher license
B	Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
C	Any amateur holding a General class or higher license
D	Any amateur holding a General class or higher license who has applied for and received approval from NASA

6. - T1C03

What types of international communications are an FCC-licensed amateur radio station permitted to make?

Select	Answer
A	Any communications that would be permitted by an international broadcast station
B	Communications incidental to conducting business or remarks of a personal nature
C	Only communications incidental to contest exchanges; all other communications are prohibited
D	Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character

7. - T1D05

When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?

Select	Answer
A	When no profit is made on the sale
B	When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives
C	When selling amateur radio equipment and not on a regular basis
D	Never

8. - T1E10

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

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

9. - T1F04

What language may you use for identification when operating in a phone sub-band?

Select	Answer
A	English, French, or Spanish
B	Any language recognized by the United Nations
C	Any language recognized by the ITU
D	English

10. - T2A10

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

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

11. - T2B06

What type of signaling uses pairs of audio tones?

Select	Answer
A	DTMF
B	GPRS
C	CTCSS
D	D-STAR

12. - T2C06

What is the Amateur Radio Emergency Service (ARES)?

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

13. - T3A08

What is a likely cause of irregular fading of signals propagated by the ionosphere?

Select	Answer
A	Interference from thunderstorms
B	Frequency shift due to Faraday rotation
C	Random combining of signals arriving via different paths
D	Intermodulation distortion

14. - T3B11

What is the approximate velocity of a radio wave in free space?

Select	Answer
A	300,000,000 meters per second
B	300,000,000 miles per hour
C	150,000 miles per hour
D	150,000 meters per second

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 generally strongest when your antenna is aimed west
C	They are often received from 10,000 miles or more
D	They are distorted and signal strength varies considerably

16. - T4A06

What signals are used in a computer-radio interface for digital mode operation?

Select	Answer
A	Receive and transmit mode, status, and location
B	Antenna and RF power
C	Receive audio, transmit audio, and transmitter keying
D	NMEA GPS location and DC power

17. - T4B05

What does the scanning function of an FM transceiver do?

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Siemens
B	Ohms
C	Mhos
D	Coulombs

19. - T5B12

Which is equal to 28400 kHz?

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

20. - T5C05

What is the unit of impedance?

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

21. - T5D05

What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

Select	Answer
A	0.125 ohms
B	13.5 ohms
C	8 ohms
D	18 ohms

22. - T6A02

What type of component is often used as an adjustable volume control?

Select	Answer
A	Power resistor
B	Fixed resistor
C	Transformer
D	Potentiometer

23. - T6B04

Which of the following components can consist of three regions of semiconductor material?

Select	Answer
A	Alternator
B	Triode
C	Transistor
D	Pentagrid converter

24. - T6C05

What is component 4 in figure T-1?

Select	Answer
A	Resistor
B	Ground symbol
C	Transistor
D	Battery

25. - T6D02

What is a relay?

Select	Answer
A	An electrically-controlled switch
B	An inverting amplifier
C	A pass transistor
D	A current controlled amplifier

26. - T7A11

Where is an RF preamplifier installed?

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

27. - T7B04

Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

Select	Answer
A	Ferrite choke
B	Band-pass filter
C	Low-pass filter
D	Preamplifier

28. - T7C11

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

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

29. - T7D06

Which of the following can damage a multimeter?

Select	Answer
A	Attempting to measure resistance using the voltage setting
B	Failing to connect one of the probes to ground
C	Attempting to measure voltage when using the resistance setting
D	Not allowing it to warm up properly

30. - T8A05

Which of the following types of signal has the narrowest bandwidth?

Select	Answer
A	FM voice
B	SSB voice
C	Slow-scan TV
D	CW

31. - T8B09

What causes spin fading of satellite signals?

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

32. - T8C08

What is the Internet Radio Linking Project (IRLP)?

Select	Answer
A	A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
B	A system for providing access to websites via amateur radio
C	A technique for measuring signal strength of an amateur transmitter via the internet
D	A system for informing amateurs in real time of the frequency of active DX stations

33. - T8D05

Which of the following is an application of APRS?

Select	Answer
A	Providing real-time tactical digital communications in conjunction with a map showing the locations of stations
B	Providing information on the number of stations signed into a repeater
C	Showing automatically the number of packets transmitted via PACTOR during a specific time interval
D	Providing voice over internet connection between repeaters

34. - T9A07

What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

Select	Answer
A	The SWR might decrease, decreasing the signal strength
B	The bandwidth of the antenna will decrease, increasing SWR
C	Signal strength is reduced due to the shielding effect of the vehicle
D	All these choices are correct

35. - T9B06

Which of the following RF connector types is most suitable for frequencies above 400 MHz?

Select	Answer
A	DB-25
B	RS-213
C	Type N
D	UHF (PL-259/SO-239)

Figure T-1