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. - T0A01

Which of the following is a safety hazard of a 12-volt storage battery?

Select	Answer
A	Shorting the terminals can cause burns, fire, or an explosion
B	Touching both terminals with the hands can cause electrical shock
C	RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas
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. - T0C08

Which of the following actions can reduce exposure to RF radiation?

Select	Answer
A	Relocate the transmitter
B	Increase the duty cycle
C	Relocate antennas
D	All these choices are correct

4. - T1A08

Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

Select	Answer
A	Frequency Spectrum Manager appointed by the FCC
B	Volunteer Frequency Coordinator recognized by local amateurs
C	FCC Regional Field Office
D	International Telecommunication Union

5. - T1B08

How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

Select	Answer
A	International communications are not permitted in those segments
B	U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them
C	Digital transmissions are not permitted in those segments
D	U.S. amateurs must give foreign amateur stations priority in those segments

6. - T1C09

What is the grace period for renewal if an amateur license expires?

Select	Answer
A	Three years
B	Ten years
C	Five years
D	Two years

7. - T1D11

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

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

8. - T1E04

What determines the transmitting frequency privileges of an amateur station?

Select	Answer
A	The class of operator license held by the control operator
B	The frequency authorized by the frequency coordinator
C	The frequencies printed on the license grant
D	The highest class of operator license held by anyone on the premises

9. - T1F06

Which of the following self-assigned indicators are acceptable when using a phone transmission?

Select	Answer
A	All these choices are correct
B	KL7CC stroke W3
C	KL7CC slash W3
D	KL7CC slant W3

10. - T2A01

What is a common repeater frequency offset in the 2 meter band?

Select	Answer
A	Plus or minus 5 MHz
B	Plus or minus 500 kHz
C	Plus or minus 1 MHz
D	Plus or minus 600 kHz

11. - T2B10

Which Q signal indicates that you are receiving interference from other stations?

Select	Answer
A	QRM
B	QRN
C	QSB
D	QTH

12. - T2C10

What information is contained in the preamble of a formal traffic message?

Select	Answer
A	The email address of the originating station
B	Information needed to track the message
C	The address of the intended recipient
D	The telephone number of the addressee

13. - T3A05

When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

Select	Answer
A	Try the long path
B	Change from vertical to horizontal polarization
C	Increase the antenna SWR
D	Try to find a path that reflects signals to the repeater

14. - T3B10

What frequency range is referred to as HF?

Select	Answer
A	300 to 3000 kHz
B	300 to 3000 MHz
C	30 to 300 MHz
D	3 to 30 MHz

15. - T3C08

What causes tropospheric ducting?

Select	Answer
A	Sunspots and solar flares
B	Discharges of lightning during electrical storms
C	Updrafts from hurricanes and tornadoes
D	Temperature inversions in the atmosphere

16. - T4A04

How are the transceiver audio input and output connected in a station configured to operate using FT8?

Select	Answer
A	To an FT8 conversion unit, a keyboard, and a computer monitor
B	To the audio input and output of a computer running WSJT-X software
C	To a computer connected to the FT8converter.com website
D	To a computer running a terminal program and connected to a terminal node controller unit

17. - T4B07

What does a DMR “code plug” contain?

Select	Answer
A	Access information for repeaters and talkgroups
B	The DMR software version
C	Your call sign in CW for automatic identification
D	The codec for digitizing audio

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Amperes
B	Volts
C	Watts
D	Ohms

19. - T5B05

Which is equal to 500 milliwatts?

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

20. - T5C11

How much current is required to deliver 120 watts at a voltage of 12 volts DC?

Select	Answer
A	10 amperes
B	132 amperes
C	0.1 amperes
D	12 amperes

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	13.5 ohms
B	18 ohms
C	0.125 ohms
D	8 ohms

22. - T6A12

What type of switch is represented by component 3 in figure T-2?

Select	Answer
A	Single-pole single-throw
B	Double-pole double-throw
C	Single-pole double-throw
D	Double-pole single-throw

23. - T6B10

Which of the following can provide power gain?

Select	Answer
A	Transformer
B	Resistor
C	Transistor
D	Reactor

24. - T6C10

What is component 3 in figure T-3?

Select	Answer
A	Variable capacitor
B	Connector
C	Meter
D	Variable inductor

25. - T6D03

Which of the following is a reason to use shielded wire?

Select	Answer
A	To prevent coupling of unwanted signals to or from the wire
B	To increase the current carrying capability of the wire
C	To decrease the resistance of DC power connections
D	To couple the wire to other signals

26. - T7A01

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

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

27. - T7B01

What can you do if you are told your FM handheld or mobile transceiver is over-deviating?

Select	Answer
A	Let the transceiver cool off
B	Talk louder into the microphone
C	Talk farther away from the microphone
D	Change to a higher power level

28. - T7C07

What happens to power lost in a feed line?

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

29. - T7D08

Which of the following types of solder should not be used for radio and electronic applications?

Select	Answer
A	Lead-tin solder
B	Rosin-core solder
C	Tin-copper solder
D	Acid-core solder

30. - T8A02

What type of modulation is commonly used for VHF packet radio transmissions?

Select	Answer
A	SSB
B	PSK
C	AM
D	FM or PM

31. - T8B06

Which of the following are inputs to a satellite tracking program?

Select	Answer
A	All these choices are correct
B	The satellite transmitted power
C	The last observed time of zero Doppler shift
D	The Keplerian elements

32. - T8C01

Which of the following methods is used to locate sources of noise interference or jamming?

Select	Answer
A	Doppler radar
B	Radio direction finding
C	Echolocation
D	Phase locking

33. - T8D01

Which of the following is a digital communications mode?

Select	Answer
A	All these choices are correct
B	FT8
C	IEEE 802.11
D	Packet radio

34. - T9A09

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

Select	Answer
A	236
B	50
C	6
D	112

35. - T9B01

What is a benefit of low SWR?

Select	Answer
A	Less antenna wear
B	Reduced signal loss
C	Reduced television interference
D	All these choices are correct

Figure T-2

Figure T-3