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	RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas
B	Touching both terminals with the hands can cause electrical shock
C	All these choices are correct
D	Shorting the terminals can cause burns, fire, or an explosion

2. - T0B04

Which of the following is an important safety precaution to observe when putting up an antenna tower?

Select	Answer
A	Wear a ground strap connected to your wrist at all times
B	Insulate the base of the tower to avoid lightning strikes
C	Look for and stay clear of any overhead electrical wires
D	All these choices are correct

3. - T0C07

What hazard is created by touching an antenna during a transmission?

Select	Answer
A	RF burn to skin
B	Radiation poisoning
C	All these choices are correct
D	Electrocution

4. - T1A04

How many operator/primary station license grants may be held by any one person?

Select	Answer
A	One for each permanent station location from which the person plans to operate
B	No more than two
C	One for each band on which the person plans to operate
D	One

5. - T1B06

On which HF bands does a Technician class operator have phone privileges?

Select	Answer
A	80 meter, 40 meter, 15 meter, and 10 meter bands
B	10 meter band only
C	30 meter band only
D	None

6. - T1C02

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

Select	Answer
A	Only a licensed amateur who has been licensed continuously for more than 10 years
B	Only a licensed amateur with an Amateur Extra Class license
C	Any licensed amateur
D	Only a licensed amateur with a General or Amateur Extra Class license

7. - T1D09

When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

Select	Answer
A	When such communications are directly related to the immediate safety of human life or protection of property
B	Never
C	Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
D	When broadcasting communications to or from the space shuttle

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. - T1F02

How often must you identify with your FCC-assigned call sign when using tactical call signs such as “Race Headquarters”?

Select	Answer
A	At the end of every transmission
B	Never, the tactical call is sufficient
C	Once during every hour
D	At the end of each communication and every ten minutes during a communication

10. - T2A07

What is meant by "repeater offset”?

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

11. - T2B09

Why are simplex channels designated in the VHF/UHF band plans?

Select	Answer
A	For contest operation
B	So stations within range of each other can communicate without tying up a repeater
C	So stations with simple transmitters can access the repeater without automated offset
D	For working DX only

12. - T2C03

What technique is used to ensure that voice messages containing unusual words are received correctly?

Select	Answer
A	Spell the words using a standard phonetic alphabet
B	All these choices are correct
C	Speak very loudly into the microphone
D	Send the words by voice and Morse code

13. - T3A11

Which region of the atmosphere can refract or bend HF and VHF radio waves?

Select	Answer
A	The troposphere
B	The stratosphere
C	The mesosphere
D	The ionosphere

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. - T3C11

Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

Select	Answer
A	Radio waves are blocked by dust particles
B	Radio waves are not blocked by dust particles
C	Radio signals move somewhat faster than the speed of light
D	The atmosphere refracts radio waves slightly

16. - T4A10

What function is performed with a transceiver and a digital mode hot spot?

Select	Answer
A	FT8 digital communications via AFSK
B	High-speed digital communications for meteor scatter
C	Communication using digital voice or data systems via the internet
D	RTTY encoding and decoding without a computer

17. - T4B01

What is the effect of excessive microphone gain on SSB transmissions?

Select	Answer
A	Distorted transmitted audio
B	Increased SWR
C	All these choices are correct
D	Frequency instability

18. - T5A06

What is the unit of frequency?

Select	Answer
A	Tesla
B	Hertz
C	Henry
D	Farad

19. - T5B09

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

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

20. - T5C05

What is the unit of impedance?

Select	Answer
A	The coulomb
B	The ohm
C	The volt
D	The ampere

21. - T5D04

What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

Select	Answer
A	30 ohms
B	93 ohms
C	3 ohms
D	270 ohms

22. - T6A12

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

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

23. - T6B11

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

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

24. - T6C04

What is component 3 in figure T-1?

Select	Answer
A	Transistor
B	Lamp
C	Ground symbol
D	Resistor

25. - T6D07

Which of the following is commonly used as a visual indicator?

Select	Answer
A	Zener diode
B	LED
C	FET
D	Bipolar transistor

26. - T7A11

Where is an RF preamplifier installed?

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

27. - T7B11

What is a symptom of RF feedback in a transmitter or transceiver?

Select	Answer
A	Excessive SWR at the antenna connection
B	Frequent blowing of power supply fuses
C	The transmitter will not stay on the desired frequency
D	Reports of garbled, distorted, or unintelligible voice transmissions

28. - T7C08

Which instrument can be used to determine SWR?

Select	Answer
A	Directional wattmeter
B	Voltmeter
C	Iambic pentameter
D	Ohmmeter

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 resistance using the voltage setting
C	Attempting to measure voltage when using the resistance setting
D	Not allowing it to warm up properly

30. - T8A12

Which of the following is a disadvantage of FM compared with single sideband?

Select	Answer
A	FM signals are harder to tune
B	Only one signal can be received at a time
C	Voice quality is poorer
D	All these choices are correct

31. - T8B08

What is meant by the statement that a satellite is operating in U/V mode?

Select	Answer
A	The satellite operates using ultraviolet frequencies
B	The satellite uplink is in the 15 meter band and the downlink is in the 10 meter band
C	The satellite uplink is in the 70 centimeter band and the downlink is in the 2 meter band
D	The satellite frequencies are usually variable

32. - T8C02

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

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

33. - T8D04

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

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

34. - T9A08

What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

Select	Answer
A	50
B	12
C	19
D	112

35. - T9B03

Why is coaxial cable the most common feed line for amateur radio antenna systems?

Select	Answer
A	It is less expensive than any other type of feed line
B	It can handle more power than any other type of feed line
C	It is easy to use and requires few special installation considerations
D	It has less loss than any other type of feed line

Figure T-2

Figure T-1