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. - T0A11

What hazard exists in a power supply immediately after turning it off?

Select	Answer
A	Voltage transients from kickback diodes
B	Charge stored in filter capacitors
C	Leakage flux in the power transformer
D	Circulating currents in the dc filter

2. - T0B09

Why should you avoid attaching an antenna to a utility pole?

Select	Answer
A	The antenna could contact high-voltage power lines
B	All these choices are correct
C	The antenna will not work properly because of induced voltages
D	The 60 Hz radiations from the feed line may increase the SWR

3. - T0C02

At which of the following frequencies does maximum permissible exposure have the lowest value?

Select	Answer
A	3.5 MHz
B	440 MHz
C	50 MHz
D	1296 MHz

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

5. - T1B05

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

Select	Answer
A	Fixed digital message forwarding systems only
B	Emergency traffic only
C	Fast-scan television only
D	Spread spectrum 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 two years
B	No, you must wait until the license has been renewed
C	Yes, for up to one year
D	Yes, as soon as you apply for renewal

7. - T1D05

When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?

Select	Answer
A	When selling amateur radio equipment and not on a regular basis
B	Never
C	When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives
D	When no profit is made on the sale

8. - T1E01

When may an amateur station transmit without a control operator?

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

9. - T1F05

What method of call sign identification is required for a station transmitting phone signals?

Select	Answer
A	Send the call sign followed by the indicator RPT
B	Send the call sign using a CW or phone emission
C	Send the call sign followed by the indicator R
D	Send the call sign using only a phone emission

10. - T2A12

What should you do before calling CQ?

Select	Answer
A	All these choices are correct
B	Make sure you are authorized to use that frequency
C	Listen first to be sure that no one else is using the frequency
D	Ask if the frequency is in use

11. - T2B06

What type of signaling uses pairs of audio tones?

Select	Answer
A	CTCSS
B	DTMF
C	GPRS
D	D-STAR

12. - T2C06

What is the Amateur Radio Emergency Service (ARES)?

Select	Answer
A	A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service
B	A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies
C	A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
D	A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency

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	Try to find a path that reflects signals to the repeater
C	Increase the antenna SWR
D	Try the long path

14. - T3B03

What are the two components of a radio wave?

Select	Answer
A	Impedance and reactance
B	Ionizing and non-ionizing radiation
C	Electric and magnetic fields
D	Voltage and current

15. - T3C08

What causes tropospheric ducting?

Select	Answer
A	Temperature inversions in the atmosphere
B	Updrafts from hurricanes and tornadoes
C	Sunspots and solar flares
D	Discharges of lightning during electrical storms

16. - T4A10

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

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

17. - T4B01

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

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

18. - T5A04

What are the units of electrical resistance?

Select	Answer
A	Coulombs
B	Ohms
C	Mhos
D	Siemens

19. - T5B08

Which is equal to 1,000,000 picofarads?

Select	Answer
A	1 microfarad
B	0.001 microfarads
C	1000 microfarads
D	1,000,000,000 microfarads

20. - T5C07

What is the abbreviation for megahertz?

Select	Answer
A	MHz
B	Mhz
C	mh
D	MH

21. - T5D09

What is the current through a 24-ohm resistor connected across 240 volts?

Select	Answer
A	0.1 amperes
B	24,000 amperes
C	216 amperes
D	10 amperes

22. - T6A12

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

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

23. - T6B11

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

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

24. - T6C04

What is component 3 in figure T-1?

Select	Answer
A	Resistor
B	Transistor
C	Ground symbol
D	Lamp

25. - T6D02

What is a relay?

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

26. - T7A06

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

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

27. - T7B03

Which of the following can cause radio frequency interference?

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

28. - T7C07

What happens to power lost in a feed line?

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

29. - T7D10

What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

Select	Answer
A	Decreasing resistance with time
B	Alternating between open and short circuit
C	Increasing resistance with time
D	Steady full-scale reading

30. - T8A10

What is the approximate bandwidth of AM fast-scan TV transmissions?

Select	Answer
A	About 3 MHz
B	More than 10 MHz
C	About 1 MHz
D	About 6 MHz

31. - T8B11

Who may receive telemetry from a space station?

Select	Answer
A	A licensed radio amateur who has registered for an access code from AMSAT
B	A licensed radio amateur with a transmitter equipped for interrogating the satellite
C	A licensed radio amateur who has been certified by the protocol developer
D	Anyone

32. - T8C02

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

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

33. - T8D01

Which of the following is a digital communications mode?

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

34. - T9A10

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

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

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-2

Figure T-1