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

2. - T0B11

Which of the following establishes grounding requirements for an amateur radio tower or antenna?

Select	Answer
A	UL recommended practices
B	FAA tower lighting regulations
C	Local electrical codes
D	FCC Part 97 rules

3. - T0C12

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

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

4. - T1A06

What is the FCC Part 97 definition of a beacon?

Select	Answer
A	An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
B	A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
C	A government transmitter marking the amateur radio band edges
D	A bulletin sent by the FCC to announce a national emergency

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

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 obtain FCC type acceptance prior to using a home-built transmitter
B	Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
C	Failure to provide and maintain a correct email address with the FCC
D	Failure to have a copy of your license available at your station

7. - T1D08

In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station?

Select	Answer
A	When the communication is incidental to classroom instruction at an educational institution
B	When the communication is related to the sale of amateur equipment by the control operator's employer
C	When the communication is made to obtain emergency information for a local broadcast station
D	All these choices are correct

8. - T1E07

When the control operator is not the station licensee, who is responsible for the proper operation of the station?

Select	Answer
A	Only the station licensee
B	The control operator and the station licensee
C	All licensed amateurs who are present at the operation
D	Only the control operator

9. - T1F09

What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?

Select	Answer
A	Earth station
B	Repeater station
C	Beacon station
D	Message forwarding station

10. - T2A03

What is a common repeater frequency offset in the 70 cm band?

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

11. - T2B11

Which Q signal indicates that you are changing frequency?

Select	Answer
A	QRU
B	QSL
C	QSY
D	QRZ

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 stratosphere
B	The troposphere
C	The ionosphere
D	The mesosphere

14. - T3B10

What frequency range is referred to as HF?

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

15. - T3C09

What is generally the best time for long-distance 10 meter band propagation via the F region?

Select	Answer
A	From shortly after sunset to dawn during periods of low sunspot activity
B	From shortly after sunset to dawn during periods of high sunspot activity
C	From dawn to shortly after sunset during periods of low sunspot activity
D	From dawn to shortly after sunset during periods of high sunspot activity

16. - T4A01

Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

Select	Answer
A	13.8 volts at 12 amperes
B	24.0 volts at 12 amperes
C	24.0 volts at 4 amperes
D	13.8 volts at 4 amperes

17. - T4B09

How is a specific group of stations selected on a digital voice transceiver?

Select	Answer
A	By enabling the group’s CTCSS tone
B	By activating automatic identification
C	By entering the group’s identification code
D	By retrieving the frequencies from transceiver memory

18. - T5A07

Why are metals generally good conductors of electricity?

Select	Answer
A	They have many free protons
B	All these choices are correct
C	They have relatively high density
D	They have many free electrons

19. - T5B07

Which is equal to 3.525 MHz?

Select	Answer
A	3525 kHz
B	0.003525 kHz
C	35.25 kHz
D	3,525,000 kHz

20. - T5C01

What describes the ability to store energy in an electric field?

Select	Answer
A	Resistance
B	Tolerance
C	Capacitance
D	Inductance

21. - T5D08

What is the current through a 100-ohm resistor connected across 200 volts?

Select	Answer
A	100 amperes
B	0.5 amperes
C	2 amperes
D	20,000 amperes

22. - T6A08

What is the function of an SPDT switch?

Select	Answer
A	A single circuit is opened or closed
B	Two circuits are each switched between one of two other circuits
C	A single circuit is switched between one of two other circuits
D	Two circuits are opened or closed

23. - T6B03

Which of these components can be used as an electronic switch?

Select	Answer
A	Thermistor
B	Varistor
C	Potentiometer
D	Transistor

24. - T6C02

What is component 1 in figure T-1?

Select	Answer
A	Resistor
B	Connector
C	Transistor
D	Battery

25. - T6D08

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

Select	Answer
A	Zener diode
B	Resistor
C	Potentiometer
D	Capacitor

26. - T7A10

What device increases the transmitted output power from a transceiver?

Select	Answer
A	An RF power amplifier
B	An impedance network
C	A voltage divider
D	All these choices are correct

27. - T7B07

Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

Select	Answer
A	Installing an RF preamplifier
B	Using double-shielded coaxial cable
C	Installing a band-reject filter
D	Installing bypass capacitors on the microphone cable

28. - T7C01

What is the primary purpose of a dummy load?

Select	Answer
A	To prevent transmitting signals over the air when making tests
B	To prevent over-modulation of a transmitter
C	To improve the signal-to-noise ratio of a receiver
D	To improve the efficiency of an antenna

29. - T7D06

Which of the following can damage a multimeter?

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

30. - T8A02

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

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

31. - T8B03

Which of the following are provided by satellite tracking programs?

Select	Answer
A	All these choices are correct
B	The apparent frequency of the satellite transmission, including effects of Doppler shift
C	The time, azimuth, and elevation of the start, maximum altitude, and end of a pass
D	Maps showing the real-time position of the satellite track over Earth

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	Sign only the last two letters of your call if there are many other stations calling
B	All these choices are correct
C	Contact the station twice to be sure that you are in his log
D	Send only the minimum information needed for proper identification and the contest exchange

33. - T8D07

Which of the following describes DMR?

Select	Answer
A	A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel
B	An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
C	An automatic position tracking mode for FM mobiles communicating through repeaters
D	A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction

34. - T9A05

Which of the following increases the resonant frequency of a dipole antenna?

Select	Answer
A	Adding capacitive loading to the ends of the radiating wires
B	Inserting coils in series with radiating wires
C	Lengthening it
D	Shortening it

35. - T9B09

What can cause erratic changes in SWR?

Select	Answer
A	Local thunderstorm
B	Loose connection in the antenna or feed line
C	Overload from a strong local station
D	Over-modulation

Figure T-1