Practice Exam

T9B09

1. What can cause erratic changes in SWR?

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

T2C03

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

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

T0B05

3. What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. Prevent loosening of the turnbuckle from vibration
• B. Provide an ability to measure for proper tensioning
• C. Secure the guy line if the turnbuckle breaks
• D. Provide a ground path for lightning strikes

T0A06

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

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

T9A09

5. What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

• A. 6
• B. 112
• C. 236
• D. 50

T1E02

6. Who may be the control operator of a station communicating through an amateur satellite or space station?

• A. Any amateur allowed to transmit on the satellite uplink frequency
• B. A General class or higher licensee with a satellite operator certification
• C. Only an Amateur Extra Class operator
• D. Only an Amateur Extra Class operator who is also an AMSAT member

T7C07

7. What happens to power lost in a feed line?

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

T3A06

8. What is the meaning of the term "picket fencing"?

• A. Rapid flutter on mobile signals due to multipath propagation
• B. Alternating transmissions during a net operation
• C. Local vs long-distance communications
• D. A type of ground system used with vertical antennas

T1B04

9. Which amateur band includes 146.52 MHz?

• A. 20 meters
• B. 6 meters
• C. 70 centimeters
• D. 2 meters

T6D02

10. What is a relay?

• A. A current controlled amplifier
• B. An electrically-controlled switch
• C. A pass transistor
• D. An inverting amplifier

T8B06

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

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

T1D06

12. What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

• A. There is no such prohibition
• B. The ITU maintains a list of words that are not permitted to be used on amateur frequencies
• C. Any such language is prohibited
• D. The FCC maintains a list of words that are not permitted to be used on amateur frequencies

T1F11

13. Which of the following is a requirement for the issuance of a club station license grant?

• A. The club must have at least four members
• B. The trustee must have an Amateur Extra Class operator license grant
• C. All these choices are correct
• D. The club must be registered with the American Radio Relay League

T2B03

14. Which of the following describes a linked repeater network?

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

T1C03

15. What types of international communications are an FCC-licensed amateur radio station permitted to make?

• A. Any communications that would be permitted by an international broadcast station
• B. Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
• C. Communications incidental to conducting business or remarks of a personal nature
• D. Only communications incidental to contest exchanges; all other communications are prohibited

T1A03

16. What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

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

T5D06

17. What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

• A. 16 ohms
• B. 8 ohms
• C. 48 ohms
• D. 3 ohms

T6C11

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

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

T6B10

19. Which of the following can provide power gain?

• A. Transistor
• B. Transformer
• C. Resistor
• D. Reactor

T8D11

20. What is an ARQ transmission system?

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

T7A05

21. What is the name of a circuit that generates a signal at a specific frequency?

• A. Low-pass filter
• B. Reactance modulator
• C. Oscillator
• D. Phase modulator

T2A03

22. What is a common repeater frequency offset in the 70 cm band?

• A. Plus or minus 5 MHz
• B. Plus or minus 600 kHz
• C. Plus or minus 1 MHz
• D. Plus or minus 500 kHz

T3B02

23. What property of a radio wave defines its polarization?

• A. The ratio of the velocity to the wavelength
• B. The orientation of the electric field
• C. The orientation of the magnetic field
• D. The ratio of the energy in the magnetic field to the energy in the electric field

T8C10

24. What is required before using the EchoLink system?

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

T7B02

25. What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

• A. The deviation of an FM transmitter is set too low
• B. The audio amplifier of the transmitter is overloaded
• C. The microphone gain of the transmitter is turned up too high
• D. The receiver is unable to reject strong signals outside the AM or FM band

T4B06

26. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The RIT or Clarifier
• B. The tone squelch
• C. The AGC or limiter
• D. The bandwidth selection

T6A03

27. What electrical parameter is controlled by a potentiometer?

• A. Inductance
• B. Resistance
• C. Capacitance
• D. Field strength

T5A10

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

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

T3C07

29. What band is best suited for communicating via meteor scatter?

• A. 33 centimeters
• B. 6 meters
• C. 2 meters
• D. 70 centimeters

T7D11

30. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the circuit is grounded
• B. Ensure that the circuit is operating at the correct frequency
• C. Ensure that the circuit is not powered
• D. Ensure that the applied voltages are correct

T8A01

31. Which of the following is a form of amplitude modulation?

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

T5C01

32. What describes the ability to store energy in an electric field?

• A. Resistance
• B. Capacitance
• C. Tolerance
• D. Inductance

T0C01

33. What type of radiation are radio signals?

• A. Ionizing radiation
• B. Gamma radiation
• C. Alpha radiation
• D. Non-ionizing radiation

T5B05

34. Which is equal to 500 milliwatts?

• A. 0.5 watts
• B. 50 watts
• C. 5 watts
• D. 0.02 watts

T4A05

35. Where should an RF power meter be installed?

• A. In the feed line, between the transmitter and antenna
• B. In parallel with the push-to-talk line and the antenna
• C. In the power supply cable, as close as possible to the radio
• D. At the power supply output