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. - T0A12

Which of the following precautions should be taken when measuring high voltages with a voltmeter?

Select	Answer
A	Ensure that the voltmeter is set to the correct frequency
B	Ensure that the circuit is grounded through the voltmeter
C	Ensure that the voltmeter and leads are rated for use at the voltages to be measured
D	Ensure that the voltmeter has very low impedance

2. - T0B03

Under what circumstances is it safe to climb a tower without a helper or observer?

Select	Answer
A	When no electrical work is being performed
B	When the work being done is not more than 20 feet above the ground
C	Never
D	When no mechanical work is being performed

3. - T0C10

Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

Select	Answer
A	It affects the average exposure to radiation
B	It takes into account the thermal effects of the final amplifier
C	It takes into account the antenna feed line loss
D	It affects the peak exposure to radiation

4. - T1A02

Which agency regulates and enforces the rules for the Amateur Radio Service in the United States?

Select	Answer
A	Homeland Security
B	The FCC
C	All these choices are correct
D	FEMA

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

6. - T1C06

From which of the following locations may an FCC-licensed amateur station transmit?

Select	Answer
A	From within any country that is a member of the United Nations
B	From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
C	From within any country that belongs to the International Telecommunication Union
D	From any vessel or craft located in international waters and documented or registered in the United States

7. - T1D03

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

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

8. - T1E04

What determines the transmitting frequency privileges of an amateur station?

Select	Answer
A	The frequencies printed on the license grant
B	The frequency authorized by the frequency coordinator
C	The highest class of operator license held by anyone on the premises
D	The class of operator license held by 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	Repeater station
B	Earth station
C	Beacon station
D	Message forwarding station

10. - T2A08

What is the meaning of the procedural signal “CQ”?

Select	Answer
A	Test transmission, no reply expected
B	Call on the quarter hour
C	Calling any station
D	Only the called station should transmit

11. - T2B07

How can you join a digital repeater’s “talkgroup”?

Select	Answer
A	Sign your call after the courtesy tone
B	Register your radio with the local FCC office
C	Join the repeater owner’s club
D	Program your radio with the group’s ID or code

12. - T2C05

What does the term “traffic” refer to in net operation?

Select	Answer
A	Messages exchanged by net stations
B	Requests to activate the net by a served agency
C	The number of stations checking in and out of a net
D	Operation by mobile or portable stations

13. - T3A02

What is the effect of vegetation on UHF and microwave signals?

Select	Answer
A	Absorption
B	Polarization rotation
C	Amplification
D	Knife-edge diffraction

14. - T3B04

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

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

15. - T3C07

What band is best suited for communicating via meteor scatter?

Select	Answer
A	70 centimeters
B	6 meters
C	33 centimeters
D	2 meters

16. - T4A12

What is an electronic keyer?

Select	Answer
A	A device for voice activated switching from receive to transmit
B	A device for switching antennas from transmit to receive
C	A device that assists in manual sending of Morse code
D	An interlock to prevent unauthorized use of a radio

17. - T4B08

What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

Select	Answer
A	Increases the number of frequencies that can be stored in memory
B	Increases the amount of offset between receive and transmit frequencies
C	Permits monitoring several modes at once by selecting a separate filter for each mode
D	Permits noise or interference reduction by selecting a bandwidth matching the mode

18. - T5A09

Which of the following describes alternating current?

Select	Answer
A	Current that alternates between positive and negative directions
B	Current that alternates between a positive direction and zero
C	All these answers are correct
D	Current that alternates between a negative direction and zero

19. - T5B12

Which is equal to 28400 kHz?

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

20. - T5C09

How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

Select	Answer
A	138 watts
B	23.8 watts
C	0.7 watts
D	3.8 watts

21. - T5D03

What formula is used to calculate resistance in a circuit?

Select	Answer
A	R = E + I
B	R = E x I
C	R = E / I
D	R = E - I

22. - T6A11

Which of the following battery chemistries is not rechargeable?

Select	Answer
A	Carbon-zinc
B	Nickel-cadmium
C	Lithium-ion
D	Lead-acid

23. - T6B06

How is the cathode lead of a semiconductor diode often marked on the package?

Select	Answer
A	With the word "cathode"
B	With a stripe
C	With the letter K
D	With the letter C

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Transmitter
B	Ground
C	Dummy load
D	Antenna

25. - T6D01

Which of the following devices or circuits changes an alternating current into a varying direct current signal?

Select	Answer
A	Transformer
B	Rectifier
C	Reflector
D	Amplifier

26. - T7A11

Where is an RF preamplifier installed?

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

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	Your transmitter is slightly off frequency
C	All these choices are correct
D	Your batteries are running low

28. - T7C04

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

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

29. - T7D07

Which of the following measurements are made using a multimeter?

Select	Answer
A	Impedance and reactance
B	Signal strength and noise
C	All these choices are correct
D	Voltage and resistance

30. - T8A03

Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

Select	Answer
A	FM
B	SSB
C	PM
D	DRM

31. - T8B09

What causes spin fading of satellite signals?

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

32. - T8C02

Which of these items would be useful for a hidden transmitter hunt?

Select	Answer
A	A directional antenna
B	A calibrated noise bridge
C	All these choices are correct
D	Calibrated SWR meter

33. - T8D05

Which of the following is an application of APRS?

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

34. - T9A04

What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

Select	Answer
A	It is mechanically fragile
B	It has low efficiency
C	It transmits only circularly polarized signals
D	All these choices are correct

35. - T9B04

What is the major function of an antenna tuner (antenna coupler)?

Select	Answer
A	It matches the antenna system impedance to the transceiver's output impedance
B	It helps a receiver automatically tune in weak stations
C	It allows an antenna to be used on both transmit and receive
D	It automatically selects the proper antenna for the frequency band being used

Figure T-3