Practice Exam

T4B09

1. How is a specific group of stations selected on a digital voice transceiver?

• A. By enabling the group's CTCSS tone
• B. By retrieving the frequencies from transceiver memory
• C. By entering the group's identification code
• D. By activating automatic identification

T2B03

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

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

T4A03

3. Why are short, heavy-gauge wires used for a transceiver's DC power connection?

• A. To avoid RF interference
• B. All these choices are correct
• C. To minimize voltage drop when transmitting
• D. To provide a good counterpoise for the antenna

T0C08

4. Which of the following actions can reduce exposure to RF radiation?

• A. Relocate the transmitter
• B. Relocate antennas
• C. All these choices are correct
• D. Increase the duty cycle

T8C03

5. What operating activity involves contacting as many stations as possible during a specified period?

• A. Net operations
• B. Public service events
• C. Simulated emergency exercises
• D. Contesting

T9A11

6. What is antenna gain?

• A. The increase in impedance on receive or transmit compared to a reference antenna
• B. The increase in signal strength in a specified direction compared to a reference antenna
• C. The additional power that is required in the antenna when transmitting on a higher frequency
• D. The additional power that is added to the transmitter power

T1F03

7. When are you required to transmit your assigned call sign?

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

T2C02

8. Which of the following are typical duties of a Net Control Station?

• A. Choose the regular net meeting time and frequency
• B. Ensure that all stations checking into the net are properly licensed for operation on the net frequency
• C. All these choices are correct
• D. Call the net to order and direct communications between stations checking in

T2A07

9. What is meant by "repeater offset"?

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

T5D07

10. What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

• A. 0.667 amperes
• B. 1.5 amperes
• C. 9600 amperes
• D. 200 amperes

T7C09

11. Which of the following causes failure of coaxial cables?

• A. Moisture contamination
• B. Operation at 100% duty cycle for an extended period
• C. Rapid fluctuation in transmitter output power
• D. Solder flux contamination

T3A01

12. Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

• A. The signal path encounters different concentrations of water vapor
• B. VHF ionospheric propagation is very sensitive to path length
• C. All these choices are correct
• D. Multipath propagation cancels or reinforces signals

T5B11

13. Which decibel value represents a power increase from 20 watts to 200 watts?

• A. 12 dB
• B. 28 dB
• C. 18 dB
• D. 10 dB

T3C11

14. Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

• A. Radio signals move somewhat faster than the speed of light
• B. Radio waves are not blocked by dust particles
• C. The atmosphere refracts radio waves slightly
• D. Radio waves are blocked by dust particles

T7B02

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

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

T1D02

16. 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

T6A06

17. What type of electrical component stores energy in a magnetic field?

• A. Diode
• B. Capacitor
• C. Inductor
• D. Varistor

T1E07

18. When the control operator is not the station licensee, who is responsible for the proper operation of the station?

• A. The control operator and the station licensee
• B. Only the station licensee
• C. All licensed amateurs who are present at the operation
• D. Only the control operator

T6B05

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

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

T7D10

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

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

T1B02

21. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a General class or higher license
• B. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
• C. Any amateur holding a Technician class or higher license
• D. Any amateur holding a General class or higher license who has applied for and received approval from NASA

T9B10

22. What is the electrical difference between RG-58 and RG-213 coaxial cable?

• A. There is no significant difference between the two types
• B. RG-213 cable has less loss at a given frequency
• C. RG-58 cable has two shields
• D. RG-58 cable can handle higher power levels

T0B10

23. Which of the following is true when installing grounding conductors used for lightning protection?

• A. Common grounds must be avoided
• B. Wires must be carefully routed with precise right-angle bends
• C. Sharp bends must be avoided
• D. Use only non-insulated wire

T0A11

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

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

T5A08

25. Which of the following is a good electrical insulator?

• A. Copper
• B. Glass
• C. Mercury
• D. Aluminum

T5C04

26. What is the unit of inductance?

• A. The coulomb
• B. The ohm
• C. The henry
• D. The farad

T6C12

27. Which of the following is accurately represented in electrical schematics?

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

T8D08

28. Which of the following is included in packet radio transmissions?

• A. A header that contains the call sign of the station to which the information is being sent
• B. Automatic repeat request in case of error
• C. All these choices are correct
• D. A check sum that permits error detection

T8B05

29. What is a satellite beacon?

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

T7A11

30. Where is an RF preamplifier installed?

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

T6D09

31. What is the name of a device that combines several semiconductors and other components into one package?

• A. Transducer
• B. Integrated circuit
• C. Transformer
• D. Multi-pole relay

T1C08

32. What is the normal term for an FCC-issued amateur radio license?

• A. Life
• B. Eight years
• C. Ten years
• D. Five years

T3B06

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

• 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 megahertz divided by 300
• D. Wavelength in meters equals frequency in hertz divided by 300

T1A03

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

T8A06

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

• A. Suppressed sideband
• B. Upper sideband
• C. Lower sideband
• D. Inverted sideband