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. - T0A02

What health hazard is presented by electrical current flowing through the body?

Select	Answer
A	All these choices are correct
B	It may disrupt the electrical functions of cells
C	It may cause involuntary muscle contractions
D	It may cause injury by heating tissue

2. - T0B06

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

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

3. - T0C11

What is the definition of duty cycle during the averaging time for RF exposure?

Select	Answer
A	The difference between the lowest power output and the highest power output of a transmitter
B	The percentage of time that a transmitter is transmitting
C	The percentage of time that a transmitter is not transmitting
D	The difference between the PEP and average power output of a transmitter

4. - T1A01

Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

Select	Answer
A	Providing personal radio communications for as many citizens as possible
B	All these choices are correct
C	Providing communications for international non-profit organizations
D	Advancing skills in the technical and communication phases of the radio art

5. - T1B05

How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

Select	Answer
A	Fast-scan television only
B	Fixed digital message forwarding systems only
C	Spread spectrum only
D	Emergency traffic only

6. - T1C11

If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

Select	Answer
A	Yes, for up to one year
B	Yes, as soon as you apply for renewal
C	No, you must wait until the license has been renewed
D	Yes, for up to two years

7. - T1D01

With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

Select	Answer
A	Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
B	Any country banned from making such communications by the American Radio Relay League (ARRL)
C	Any country banned from such communications by the International Amateur Radio Union (IARU)
D	Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications

8. - T1E01

When may an amateur station transmit without a control operator?

Select	Answer
A	When the station licensee is away and another licensed amateur is using the station
B	Never
C	When the transmitting station is an auxiliary station
D	When using automatic control, such as in the case of a repeater

9. - T1F09

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

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

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

12. - T2C11

What is meant by “check” in a radiogram header?

Select	Answer
A	The call sign of the originating station
B	A box on the message form that indicates that the message was received and/or relayed
C	A list of stations that have relayed the message
D	The number of words or word equivalents in the text portion of the message

13. - T3A05

When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

Select	Answer
A	Change from vertical to horizontal polarization
B	Increase the antenna SWR
C	Try to find a path that reflects signals to the repeater
D	Try the long path

14. - T3B07

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

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

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	The atmosphere refracts radio waves slightly
D	Radio signals move somewhat faster than the speed of light

16. - T4A12

What is an electronic keyer?

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

17. - T4B01

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

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Coulombs
B	Ohms
C	Siemens
D	Mhos

19. - T5B12

Which is equal to 28400 kHz?

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

20. - T5C07

What is the abbreviation for megahertz?

Select	Answer
A	MH
B	MHz
C	mh
D	Mhz

21. - T5D03

What formula is used to calculate resistance in a circuit?

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

22. - T6A05

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

Select	Answer
A	Resistor
B	Oscillator
C	Capacitor
D	Potentiometer

23. - T6B01

Which is true about forward voltage drop in a diode?

Select	Answer
A	It has no impact on the voltage delivered to the load
B	It is proportional to peak inverse voltage
C	It indicates that the diode is defective
D	It is lower in some diode types than in others

24. - T6C05

What is component 4 in figure T-1?

Select	Answer
A	Transistor
B	Ground symbol
C	Battery
D	Resistor

25. - T6D11

Which of the following is a resonant or tuned circuit?

Select	Answer
A	A linear voltage regulator
B	An inductor and a capacitor in series or parallel
C	A circuit designed to provide high-fidelity audio
D	A resistor circuit used for reducing standing wave ratio

26. - T7A04

Which term describes the ability of a receiver to discriminate between multiple signals?

Select	Answer
A	Selectivity
B	Discrimination ratio
C	Harmonic distortion
D	Sensitivity

27. - T7B07

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

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

28. - T7C07

What happens to power lost in a feed line?

Select	Answer
A	It distorts the signal
B	It is radiated as harmonics
C	It increases the SWR
D	It is converted into heat

29. - T7D07

Which of the following measurements are made using a multimeter?

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

30. - T8A07

What is a characteristic of single sideband (SSB) compared to FM?

Select	Answer
A	SSB signals are less susceptible to interference
B	SSB signals are easier to tune in correctly
C	SSB signals have narrower bandwidth
D	All these choices are correct

31. - T8B04

What mode of transmission is commonly used by amateur radio satellites?

Select	Answer
A	FM
B	CW/data
C	All these choices are correct
D	SSB

32. - T8C05

What is a grid locator?

Select	Answer
A	An instrument for neutralizing a final amplifier
B	A letter-number designator assigned to an azimuth and elevation
C	An instrument for radio direction finding
D	A letter-number designator assigned to a geographic location

33. - T8D08

Which of the following is included in packet radio transmissions?

Select	Answer
A	Automatic repeat request in case of error
B	A header that contains the call sign of the station to which the information is being sent
C	A check sum that permits error detection
D	All these choices are correct

34. - T9A09

What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

Select	Answer
A	236
B	50
C	112
D	6

35. - T9B10

What is the electrical difference between RG-58 and RG-213 coaxial cable?

Select	Answer
A	RG-58 cable can handle higher power levels
B	RG-58 cable has two shields
C	RG-213 cable has less loss at a given frequency
D	There is no significant difference between the two types

Figure T-1