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. - T0B11

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

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

3. - T0C10

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

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

4. - T1A07

What is the FCC Part 97 definition of a space station?

Select	Answer
A	A manned satellite orbiting Earth
B	An amateur station located more than 50 km above Earth's surface
C	An amateur station using amateur radio satellites for relay of signals
D	Any satellite orbiting Earth

5. - T1B11

What is the maximum peak envelope power output for Technician class operators in their HF band segments?

Select	Answer
A	10 watts
B	200 watts
C	100 watts
D	50 watts

6. - T1C02

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

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

7. - T1D03

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

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

8. - T1E05

What is an amateur station’s control point?

Select	Answer
A	The location of the station’s transmitting apparatus
B	The location of the station’s transmitting antenna
C	The mailing address of the station licensee
D	The location at which the control operator function is performed

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

10. - T2A02

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

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

11. - T2B05

What would cause your FM transmission audio to be distorted on voice peaks?

Select	Answer
A	You are talking too loudly
B	Your repeater offset is inverted
C	You need to talk louder
D	Your transmit power is too high

12. - T2C07

Which of the following is standard practice when you participate in a net?

Select	Answer
A	When first responding to the net control station, transmit your call sign, name, and address as in the FCC database
B	All these choices are correct
C	Unless you are reporting an emergency, transmit only when directed by the net control station
D	Record the time of each of your transmissions

13. - T3A09

Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

Select	Answer
A	Either vertically or horizontally polarized antennas may be used for transmission or reception
B	FM voice is unusable
C	Digital modes are unusable
D	Both the transmitting and receiving antennas must be of the same polarization

14. - T3B08

What frequency range is referred to as VHF?

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

15. - T3C05

Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

Select	Answer
A	Quantum tunneling
B	Knife-edge diffraction
C	Doppler shift
D	Faraday rotation

16. - T4A06

What signals are used in a computer-radio interface for digital mode operation?

Select	Answer
A	NMEA GPS location and DC power
B	Antenna and RF power
C	Receive audio, transmit audio, and transmitter keying
D	Receive and transmit mode, status, and location

17. - T4B08

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

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Mhos
B	Siemens
C	Ohms
D	Coulombs

19. - T5B13

Which is equal to 2425 MHz?

Select	Answer
A	0.002425 GHz
B	24.25 GHz
C	2425 GHz
D	2.425 GHz

20. - T5C08

What is the formula used to calculate electrical power (P) in a DC circuit?

Select	Answer
A	P = I + E
B	P = E / I
C	P = I  E
D	P = E – I

21. - T5D12

What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

Select	Answer
A	0.2 volts
B	20 volts
C	8 volts
D	12 volts

22. - T6A08

What is the function of an SPDT switch?

Select	Answer
A	Two circuits are 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	A single circuit is opened or closed

23. - T6B03

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

Select	Answer
A	Thermistor
B	Potentiometer
C	Transistor
D	Varistor

24. - T6C01

What is the name of an electrical wiring diagram that uses standard component symbols?

Select	Answer
A	Schematic
B	Connector pinout
C	Bill of materials
D	Flow chart

25. - T6D03

Which of the following is a reason to use shielded wire?

Select	Answer
A	To couple the wire to other signals
B	To decrease the resistance of DC power connections
C	To increase the current carrying capability of the wire
D	To prevent coupling of unwanted signals to or from the wire

26. - T7A06

What device converts the RF input and output of a transceiver to another band?

Select	Answer
A	Low-pass filter
B	High-pass filter
C	Phase converter
D	Transverter

27. - T7B03

Which of the following can cause radio frequency interference?

Select	Answer
A	Harmonics
B	Spurious emissions
C	Fundamental overload
D	All these choices are correct

28. - T7C10

Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

Select	Answer
A	Ultraviolet resistant jackets prevent harmonic radiation
B	Ultraviolet light can increase losses in the cable’s jacket
C	Ultraviolet light can damage the jacket and allow water to enter the cable
D	Ultraviolet and RF signals can mix, causing interference

29. - T7D07

Which of the following measurements are made using a multimeter?

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

30. - T8A09

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

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

31. - T8B09

What causes spin fading of satellite signals?

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

32. - T8C10

What is required before using the EchoLink system?

Select	Answer
A	Register your call sign and provide proof of license
B	Purchase a license to use the EchoLink software
C	All these choices are correct
D	Complete the required EchoLink training

33. - T8D12

Which of the following best describes an amateur radio mesh network?

Select	Answer
A	A satellite communications network using modified commercial satellite TV hardware
B	A wide-bandwidth digital voice mode employing DMR protocols
C	An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
D	An internet linking protocol used to network repeaters

34. - T9A05

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

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

35. - T9B04

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

Select	Answer
A	It helps a receiver automatically tune in weak stations
B	It matches the antenna system impedance to the transceiver's output impedance
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