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

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

3. - T0C06

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

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

4. - T1A10

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

Select	Answer
A	All these choices are correct
B	A radio service using amateur frequencies for emergency management or civil defense communications
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. - T1B10

Where may SSB phone be used in amateur bands above 50 MHz?

Select	Answer
A	In at least some segment of all these bands
B	On any band if the power is limited to 25 watts
C	Only in sub-bands allocated to General class or higher licensees
D	Only on repeaters

6. - T1C02

Who may select a desired call sign under the vanity call sign rules?

Select	Answer
A	Only a licensed amateur with an 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 a General or Amateur Extra Class license

7. - T1D03

When is it permissible to transmit messages encoded to obscure their meaning?

Select	Answer
A	Never
B	Only when transmitting certain approved digital codes
C	Only during contests
D	Only when transmitting control commands to space stations or radio control craft

8. - T1E09

Which of the following are required for remote control operation?

Select	Answer
A	The control operator must indirectly manipulate the controls
B	A control operator is required at all times
C	The control operator must be at the control point
D	All these choices are correct

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 after written notification by the FCC of such inspection
D	At any time ten days after notification by the FCC of such an inspection

10. - T2A07

What is meant by "repeater offset”?

Select	Answer
A	The repeater has a time delay to prevent interference
B	The difference between a repeater’s transmit and receive frequencies
C	The number of simultaneous transmit frequencies used by a repeater
D	The repeater station identification is done on a separate frequency

11. - T2B08

Which of the following applies when two stations transmitting on the same frequency interfere with each other?

Select	Answer
A	Interference is inevitable, so no action is required
B	Both stations should choose another frequency to avoid conflict
C	Use subaudible tones so both stations can share the frequency
D	The stations should negotiate continued use of the frequency

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	Requests to activate the net by a served agency
D	Messages exchanged by net stations

13. - T3A04

What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

Select	Answer
A	The modulation sidebands might become inverted
B	Nothing significant will happen
C	Signals have an echo effect
D	Received signal strength is reduced

14. - T3B01

What is the relationship between the electric and magnetic fields of an electromagnetic wave?

Select	Answer
A	They revolve in opposite directions
B	They are at right angles
C	They are in parallel
D	They travel at different speeds

15. - T3C08

What causes tropospheric ducting?

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

16. - T4A03

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

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

17. - T4B07

What does a DMR “code plug” contain?

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

18. - T5A11

What type of current flow is opposed by resistance?

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

19. - T5B09

Which decibel value most closely represents a power increase from 5 watts to 10 watts?

Select	Answer
A	3 dB
B	5 dB
C	10 dB
D	2 dB

20. - T5C03

What describes the ability to store energy in a magnetic field?

Select	Answer
A	Inductance
B	Admittance
C	Resistance
D	Capacitance

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. - T6A05

What type of electrical component consists of conductive surfaces separated by an insulator?

Select	Answer
A	Oscillator
B	Potentiometer
C	Capacitor
D	Resistor

23. - T6B08

What does the abbreviation FET stand for?

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

24. - T6C03

What is component 2 in figure T-1?

Select	Answer
A	Connector
B	Transistor
C	Resistor
D	Indicator lamp

25. - T6D08

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

Select	Answer
A	Resistor
B	Zener diode
C	Capacitor
D	Potentiometer

26. - T7A08

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

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

27. - T7B01

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

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

28. - T7C04

What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

Select	Answer
A	50:50
B	Zero
C	Full Scale
D	1:1

29. - T7D04

Which instrument is used to measure electric current?

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

30. - T8A08

What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

Select	Answer
A	15 kHz
B	3 kHz
C	1 kHz
D	6 kHz

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. - T8C10

What is required before using the EchoLink system?

Select	Answer
A	Complete the required EchoLink training
B	All these choices are correct
C	Purchase a license to use the EchoLink software
D	Register your call sign and provide proof of license

33. - T8D04

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

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

34. - T9A07

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

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

35. - T9B11

Which of the following types of feed line has the lowest loss at VHF and UHF?

Select	Answer
A	Air-insulated hardline
B	50-ohm flexible coax
C	75-ohm flexible coax
D	Multi-conductor unbalanced cable

Figure T-1