Practice Exam

T4A04

1. How are the transceiver audio input and output connected in a station configured to operate using FT8?

• A. To a computer running a terminal program and connected to a terminal node controller unit
• B. To a computer connected to the FT8converter.com website
• C. To an FT8 conversion unit, a keyboard, and a computer monitor
• D. To the audio input and output of a computer running WSJT-X software

T7B03

2. Which of the following can cause radio frequency interference?

• A. Spurious emissions
• B. Fundamental overload
• C. Harmonics
• D. All these choices are correct

T3A03

3. What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?

• A. Right-hand circular
• B. Left-hand circular
• C. Vertical
• D. Horizontal

T1A08

4. Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

• A. FCC Regional Field Office
• B. Volunteer Frequency Coordinator recognized by local amateurs
• C. Frequency Spectrum Manager appointed by the FCC
• D. International Telecommunication Union

T9B06

5. Which of the following RF connector types is most suitable for frequencies above 400 MHz?

• A. UHF (PL-259/SO-239)
• B. Type N
• C. DB-25
• D. RS-213

T1F09

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

• A. Earth station
• B. Message forwarding station
• C. Beacon station
• D. Repeater station

T7D10

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

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

T2B01

8. How is a VHF/UHF transceiver's "reverse" function used?

• A. To listen on a repeater's input frequency
• B. To listen on a repeater's output frequency
• C. To reduce power output
• D. To increase power output

T6D04

9. Which of the following displays an electrical quantity as a numeric value?

• A. Meter
• B. Transistor
• C. Potentiometer
• D. Relay

T0A11

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

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

T0C05

11. Why do exposure limits vary with frequency?

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

T5A10

12. Which term describes the rate at which electrical energy is used?

• A. Current
• B. Resistance
• C. Voltage
• D. Power

T6A01

13. What electrical component opposes the flow of current in a DC circuit?

• A. Resistor
• B. Inductor
• C. Transformer
• D. Inverter

T8D11

14. What is an ARQ transmission system?

• A. A system used to encrypt command signals to an amateur radio satellite
• B. A special transmission format limited to video signals
• C. An error correction method in which the receiving station detects errors and sends a request for retransmission
• D. A method of compressing data using autonomous reiterative Q codes prior to final encoding

T5C09

15. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

• A. 3.8 watts
• B. 138 watts
• C. 23.8 watts
• D. 0.7 watts

T2C03

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

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

T3C01

17. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. FCC regulations prohibit them from going more than 50 miles
• B. UHF signals are usually not propagated by the ionosphere
• C. UHF signals are absorbed by the ionospheric D region
• D. They are too weak to go very far

T7C08

18. Which instrument can be used to determine SWR?

• A. Directional wattmeter
• B. Iambic pentameter
• C. Voltmeter
• D. Ohmmeter

T6B05

19. What type of transistor has a gate, drain, and source?

• A. Field-effect
• B. Varistor
• C. Bipolar junction
• D. Tesla-effect

T9A05

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

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

T8C06

21. How is over the air access to IRLP nodes accomplished?

• A. By obtaining a password that is sent via voice to the node
• B. By using CTCSS tone codes
• C. By using DTMF signals
• D. By entering the proper internet password

T3B08

22. What frequency range is referred to as VHF?

• A. 30 kHz to 300 kHz
• B. 30 MHz to 300 MHz
• C. 300 MHz to 3000 MHz
• D. 300 kHz to 3000 kHz

T6C11

23. What is component 4 in figure T-3?

• A. Ground
• B. Transmitter
• C. Antenna
• D. Dummy load

T1E08

24. Which of the following is an example of automatic control?

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

T8B06

25. Which of the following are inputs to a satellite tracking program?

• A. All these choices are correct
• B. The last observed time of zero Doppler shift
• C. The satellite transmitted power
• D. The Keplerian elements

T2A04

26. What is an appropriate way to call another station on a repeater if you know the other station's call sign?

• A. Say "CQ" three times, then the other station's call sign
• B. Say "break, break," then say the station's call sign
• C. Wait for the station to call CQ, then answer
• D. Say the station's call sign, then identify with your call sign

T0B06

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

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

T5D03

28. What formula is used to calculate resistance in a circuit?

• A. R = E - I
• B. R = E / I
• C. R = E + I
• D. R = E x I

T4B03

29. How is squelch adjusted so that a weak FM signal can be heard?

• A. Set the squelch threshold so that receiver output audio is on all the time
• B. Enable squelch enhancement
• C. Turn up the audio level until it overcomes the squelch threshold
• D. Turn on the anti-squelch function

T8A09

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

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

T7A11

31. Where is an RF preamplifier installed?

• A. At the output of the transmitter power amplifier
• B. Between the transmitter and the antenna tuner
• C. Between the antenna and receiver
• D. At the output of the receiver audio amplifier

T1D02

32. Under which of the following circumstances are one-way transmissions by an amateur station prohibited?

• A. In all circumstances
• B. Telecommand or transmissions of telemetry
• C. Broadcasting
• D. International Morse Code Practice

T1C02

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

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

T5B10

34. Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

• A. -3 dB
• B. -6 dB
• C. -9 dB
• D. -1 dB

T1B12

35. Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz?

• A. 100 watts
• B. 1500 watts
• C. 500 watts
• D. 50 watts