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. - T0A06

What is a good way to guard against electrical shock at your station?

Select	Answer
A	Use three-wire cords and plugs for all AC powered equipment
B	All these choices are correct
C	Install mechanical interlocks in high-voltage circuits
D	Connect all AC powered station equipment to a common safety ground

2. - T0B03

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

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

3. - T0C05

Why do exposure limits vary with frequency?

Select	Answer
A	The human body absorbs more RF energy at some frequencies than at others
B	Lower frequency RF fields have more energy than higher frequency fields
C	Higher frequency RF fields are transient in nature
D	Lower frequency RF fields do not penetrate the human body

4. - T1A10

What is the Radio Amateur Civil Emergency Service (RACES)?

Select	Answer
A	A radio service using amateur frequencies for emergency management or civil defense communications
B	An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
C	All these choices are correct
D	A radio service using amateur stations for emergency management or civil defense communications

5. - T1B04

Which amateur band includes 146.52 MHz?

Select	Answer
A	20 meters
B	6 meters
C	70 centimeters
D	2 meters

6. - T1C09

What is the grace period for renewal if an amateur license expires?

Select	Answer
A	Ten years
B	Five years
C	Two years
D	Three years

7. - T1D04

Under what conditions is an amateur station authorized to transmit music using a phone emission?

Select	Answer
A	When incidental to an authorized retransmission of manned spacecraft communications
B	When the music produces no spurious emissions
C	When transmissions are limited to less than three minutes per hour
D	When the music is transmitted above 1280 MHz

8. - T1E05

What is an amateur station’s control point?

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

9. - T1F03

When are you required to transmit your assigned call sign?

Select	Answer
A	At least once during each transmission
B	At least every 10 minutes during and at the end of a communication
C	At least every 15 minutes during and at the end of a communication
D	At the beginning of each contact, and every 10 minutes thereafter

10. - T2A11

What term describes an amateur station that is transmitting and receiving on the same frequency?

Select	Answer
A	Diplex
B	Simplex
C	Full duplex
D	Multiplex

11. - T2B03

Which of the following describes a linked repeater network?

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

12. - T2C10

What information is contained in the preamble of a formal traffic message?

Select	Answer
A	The email address of the originating station
B	Information needed to track the message
C	The address of the intended recipient
D	The telephone number of the addressee

13. - T3A04

What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

Select	Answer
A	Nothing significant will happen
B	Received signal strength is reduced
C	The modulation sidebands might become inverted
D	Signals have an echo effect

14. - T3B08

What frequency range is referred to as VHF?

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

15. - T3C06

What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?

Select	Answer
A	F2 region refraction
B	Faraday rotation
C	Tropospheric ducting
D	D region refraction

16. - T4A12

What is an electronic keyer?

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

17. - T4B04

What is a way to enable quick access to a favorite frequency or channel on your transceiver?

Select	Answer
A	Use the scan mode to select the desired frequency
B	Enable the frequency offset
C	Enable the VOX
D	Store it in a memory channel

18. - T5A01

Electrical current is measured in which of the following units?

Select	Answer
A	Ohms
B	Amperes
C	Volts
D	Watts

19. - T5B06

Which is equal to 3000 milliamperes?

Select	Answer
A	3 amperes
B	0.003 amperes
C	3,000,000 amperes
D	0.3 amperes

20. - T5C10

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

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

21. - T5D13

In which type of circuit is DC current the same through all components?

Select	Answer
A	Branch
B	Parallel
C	Series
D	Resonant

22. - T6A03

What electrical parameter is controlled by a potentiometer?

Select	Answer
A	Inductance
B	Resistance
C	Capacitance
D	Field strength

23. - T6B12

What are the names of the electrodes of a bipolar junction transistor?

Select	Answer
A	Signal, bias, power
B	Pole one, pole two, output
C	Emitter, base, collector
D	Input, output, supply

24. - T6C09

What is component 4 in figure T-2?

Select	Answer
A	Transformer
B	Double-pole switch
C	Variable inductor
D	Potentiometer

25. - T6D11

Which of the following is a resonant or tuned circuit?

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

26. - T7A04

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

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

27. - T7B07

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

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

28. - T7C11

What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

Select	Answer
A	It has more loss per foot
B	It requires special techniques to prevent moisture in the cable
C	It cannot be used for VHF or UHF antennas
D	It cannot be used at below freezing temperatures

29. - T7D02

How is a voltmeter connected to a component to measure applied voltage?

Select	Answer
A	In series
B	In quadrature
C	In parallel
D	In phase

30. - T8A06

Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

Select	Answer
A	Upper sideband
B	Lower sideband
C	Inverted sideband
D	Suppressed sideband

31. - T8B05

What is a satellite beacon?

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

32. - T8C04

Which of the following is good procedure when contacting another station in a contest?

Select	Answer
A	Sign only the last two letters of your call if there are many other stations calling
B	Contact the station twice to be sure that you are in his log
C	Send only the minimum information needed for proper identification and the contest exchange
D	All these choices are correct

33. - T8D01

Which of the following is a digital communications mode?

Select	Answer
A	FT8
B	All these choices are correct
C	Packet radio
D	IEEE 802.11

34. - T9A10

In which direction does a half-wave dipole antenna radiate the strongest signal?

Select	Answer
A	In the direction of the feed line
B	Equally in all directions
C	Off the ends of the antenna
D	Broadside to the antenna

35. - T9B12

What is standing wave ratio (SWR)?

Select	Answer
A	An indication of the quality of your station’s ground connection
B	A measure of how well a load is matched to a transmission line
C	The transmitter efficiency ratio
D	The ratio of amplifier power output to input

Figure T-2