US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

Anonymous User

US Amateur Radio - Technician (Element 2, 2022-2026) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - T0A11

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

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

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

3. - T0C04

What factors affect the RF exposure of people near an amateur station antenna?

Select	Answer
A	Distance from the antenna to a person
B	Frequency and power level of the RF field
C	All these choices are correct
D	Radiation pattern of the antenna

4. - T1A02

Which agency regulates and enforces the rules for the Amateur Radio Service in the United States?

Select	Answer
A	All these choices are correct
B	FEMA
C	Homeland Security
D	The FCC

5. - T1B08

How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

Select	Answer
A	U.S. amateurs must give foreign amateur stations priority in those segments
B	Digital transmissions are not permitted in those segments
C	International communications are not permitted in those segments
D	U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them

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, for up to two years
C	No, you must wait until the license has been renewed
D	Yes, as soon as you apply for renewal

7. - T1D07

What types of amateur stations can automatically retransmit the signals of other amateur stations?

Select	Answer
A	Auxiliary, beacon, or Earth stations
B	Beacon, repeater, or space stations
C	Earth, repeater, or space stations
D	Repeater, auxiliary, or space stations

8. - T1E08

Which of the following is an example of automatic control?

Select	Answer
A	Using a computer or other device to identify automatically
B	Using a computer or other device to send CW automatically
C	Repeater operation
D	Controlling a station over the internet

9. - T1F04

What language may you use for identification when operating in a phone sub-band?

Select	Answer
A	English, French, or Spanish
B	Any language recognized by the United Nations
C	Any language recognized by the ITU
D	English

10. - T2A07

What is meant by "repeater offset”?

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

11. - T2B04

Which of the following could be the reason you are unable to access a repeater whose output you can hear?

Select	Answer
A	All these choices are correct
B	You are using the wrong DCS code
C	You are using the wrong CTCSS tone
D	Improper transceiver offset

12. - T2C03

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

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

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

14. - T3B06

What is the formula for converting frequency to approximate wavelength in meters?

Select	Answer
A	Wavelength in meters equals 300 divided by frequency in megahertz
B	Wavelength in meters equals frequency in hertz multiplied by 300
C	Wavelength in meters equals frequency in hertz divided by 300
D	Wavelength in meters equals frequency in megahertz divided by 300

15. - T3C10

Which of the following bands may provide long-distance communications via the ionosphere’s F region during the peak of the sunspot cycle?

Select	Answer
A	23 centimeters
B	70 centimeters and 1.25 meters
C	6 and 10 meters
D	All these choices are correct

16. - T4A01

Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

Select	Answer
A	24.0 volts at 12 amperes
B	13.8 volts at 12 amperes
C	13.8 volts at 4 amperes
D	24.0 volts at 4 amperes

17. - T4B01

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

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

18. - T5A02

Electrical power is measured in which of the following units?

Select	Answer
A	Watts
B	Volts
C	Watt-hours
D	Amperes

19. - T5B01

How many milliamperes is 1.5 amperes?

Select	Answer
A	1500 milliamperes
B	150 milliamperes
C	15,000 milliamperes
D	15 milliamperes

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	14.5 watts
D	4.8 watts

21. - T5D13

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

Select	Answer
A	Series
B	Resonant
C	Branch
D	Parallel

22. - T6A03

What electrical parameter is controlled by a potentiometer?

Select	Answer
A	Capacitance
B	Field strength
C	Resistance
D	Inductance

23. - T6B08

What does the abbreviation FET stand for?

Select	Answer
A	Field Effect Transistor
B	Free Electron Transmitter
C	Fast Electron Transistor
D	Frequency Emission Transmitter

24. - T6C12

Which of the following is accurately represented in electrical schematics?

Select	Answer
A	All these choices are correct
B	Component connections
C	Physical appearance of components
D	Wire lengths

25. - T6D07

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

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

26. - T7A07

What is the function of a transceiver’s PTT input?

Select	Answer
A	Input for a preamplifier tuning tone
B	Provides a transmit tuning tone when grounded
C	Switches transceiver from receive to transmit when grounded
D	Input for a key used to send CW

27. - T7B11

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

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

28. - T7C01

What is the primary purpose of a dummy load?

Select	Answer
A	To prevent transmitting signals over the air when making tests
B	To prevent over-modulation of a transmitter
C	To improve the efficiency of an antenna
D	To improve the signal-to-noise ratio of a receiver

29. - T7D08

Which of the following types of solder should not be used for radio and electronic applications?

Select	Answer
A	Lead-tin solder
B	Tin-copper solder
C	Rosin-core solder
D	Acid-core solder

30. - T8A01

Which of the following is a form of amplitude modulation?

Select	Answer
A	Spread spectrum
B	Phase shift keying (PSK)
C	Packet radio
D	Single sideband

31. - T8B07

What is Doppler shift in reference to satellite communications?

Select	Answer
A	An observed change in signal frequency caused by relative motion between the satellite and Earth station
B	A mode where the satellite receives signals on one band and transmits on another
C	A special digital communications mode for some satellites
D	A change in the satellite orbit

32. - T8C02

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

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

33. - T8D07

Which of the following describes DMR?

Select	Answer
A	An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
B	An automatic position tracking mode for FM mobiles communicating through repeaters
C	A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
D	A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel

34. - T9A06

Which of the following types of antenna offers the greatest gain?

Select	Answer
A	J pole
B	Yagi
C	Isotropic
D	5/8 wave vertical

35. - T9B09

What can cause erratic changes in SWR?

Select	Answer
A	Overload from a strong local station
B	Local thunderstorm
C	Loose connection in the antenna or feed line
D	Over-modulation