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. - T0A07

Where should a lightning arrester be installed in a coaxial feed line?

Select	Answer
A	On a grounded panel near where feed lines enter the building
B	At the antenna feed point
C	At the ac power service panel
D	At the output connector of a transceiver

2. - T0B06

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

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

3. - T0C03

How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

Select	Answer
A	It decreases by 50 percent
B	There is no adjustment allowed for lower duty cycle
C	It increases by a factor of 2
D	It increases by a factor of 3

4. - T1A03

What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

Select	Answer
A	It is encouraged
B	All these choices are correct
C	It is required when in contact with foreign stations
D	It is required when transmitting emergency messages

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

6. - T1C10

How soon after passing the examination for your first amateur radio license may you transmit on the amateur radio bands?

Select	Answer
A	As soon as you receive your license in the mail from the FCC
B	As soon as your operator/station license grant appears in the FCC’s license database
C	As soon as your operator/station license grant appears on the ARRL website
D	Immediately on receiving your Certificate of Successful Completion of Examination (CSCE)

7. - T1D03

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

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

8. - T1E08

Which of the following is an example of automatic control?

Select	Answer
A	Controlling a station over the internet
B	Using a computer or other device to identify automatically
C	Repeater operation
D	Using a computer or other device to send CW automatically

9. - T1F04

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

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

10. - T2A02

What is the national calling frequency for FM simplex operations in the 2 meter band?

Select	Answer
A	145.000 MHz
B	432.100 MHz
C	146.520 MHz
D	446.000 MHz

11. - T2B03

Which of the following describes a linked repeater network?

Select	Answer
A	A system of repeaters linked by APRS
B	Multiple repeaters with the same control operator
C	A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
D	A single repeater with more than one receiver

12. - T2C05

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

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

13. - T3A07

What weather condition might decrease range at microwave frequencies?

Select	Answer
A	High winds
B	Colder temperatures
C	Precipitation
D	Low barometric pressure

14. - T3B07

In addition to frequency, which of the following is used to identify amateur radio bands?

Select	Answer
A	The approximate wavelength in meters
B	Channel numbers
C	All these choices are correct
D	Traditional letter/number designators

15. - T3C01

Why are simplex UHF signals rarely heard beyond their radio horizon?

Select	Answer
A	UHF signals are absorbed by the ionospheric D region
B	They are too weak to go very far
C	FCC regulations prohibit them from going more than 50 miles
D	UHF signals are usually not propagated by the ionosphere

16. - T4A12

What is an electronic keyer?

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

17. - T4B12

What is the result of tuning an FM receiver above or below a signal’s frequency?

Select	Answer
A	Generation of a heterodyne tone
B	Sideband inversion
C	Distortion of the signal’s audio
D	Change in audio pitch

18. - T5A03

What is the name for the flow of electrons in an electric circuit?

Select	Answer
A	Resistance
B	Capacitance
C	Current
D	Voltage

19. - T5B09

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

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

20. - T5C10

How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

Select	Answer
A	14.5 watts
B	0.208 watts
C	4.8 watts
D	30 watts

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	8 ohms
C	18 ohms
D	13.5 ohms

22. - T6A01

What electrical component opposes the flow of current in a DC circuit?

Select	Answer
A	Resistor
B	Inductor
C	Transformer
D	Inverter

23. - T6B11

What is the term that describes a device's ability to amplify a signal?

Select	Answer
A	Forward voltage drop
B	On resistance
C	Gain
D	Forward resistance

24. - T6C11

What is component 4 in figure T-3?

Select	Answer
A	Dummy load
B	Transmitter
C	Antenna
D	Ground

25. - T6D02

What is a relay?

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

26. - T7A05

What is the name of a circuit that generates a signal at a specific frequency?

Select	Answer
A	Phase modulator
B	Oscillator
C	Low-pass filter
D	Reactance modulator

27. - T7B09

What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

Select	Answer
A	Add a preamplifier to the TV antenna input
B	Add a high-pass filter to the TV antenna input
C	Be sure all TV feed line coaxial connectors are installed properly
D	Add a low-pass filter to the TV antenna input

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 efficiency of an antenna
D	To improve the signal-to-noise ratio of a receiver

29. - T7D11

Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

Select	Answer
A	Ensure that the circuit is not powered
B	Ensure that the circuit is grounded
C	Ensure that the circuit is operating at the correct frequency
D	Ensure that the applied voltages are correct

30. - T8A09

What is the approximate bandwidth of a VHF repeater FM voice signal?

Select	Answer
A	Less than 500 Hz
B	About 150 kHz
C	Between 50 and 125 kHz
D	Between 10 and 15 kHz

31. - T8B05

What is a satellite beacon?

Select	Answer
A	The primary transmit antenna on the satellite
B	An indicator light that shows where to point your antenna
C	A reflective surface on the satellite
D	A transmission from a satellite that contains status information

32. - T8C08

What is the Internet Radio Linking Project (IRLP)?

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

33. - T8D11

What is an ARQ transmission system?

Select	Answer
A	An error correction method in which the receiving station detects errors and sends a request for retransmission
B	A method of compressing data using autonomous reiterative Q codes prior to final encoding
C	A special transmission format limited to video signals
D	A system used to encrypt command signals to an amateur radio satellite

34. - T9A03

Which of the following describes a simple dipole oriented parallel to Earth's surface?

Select	Answer
A	A travelling-wave antenna
B	A ground-wave antenna
C	A vertically polarized antenna
D	A horizontally polarized antenna

35. - T9B09

What can cause erratic changes in SWR?

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

Figure T-3