Practice Exam

T7B05

1. How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

• A. Switch the transmitter to a narrow-band mode
• B. Block the interfering signal with a filter on the amateur transmitter
• C. Block the amateur signal with a filter at the antenna input of the affected receiver
• D. Switch the transmitter from FM to SSB

T8D04

2. What type of transmission is indicated by the term "NTSC?"

• A. An analog fast-scan color TV signal
• B. A frame compression scheme for TV signals
• C. A Normal Transmission mode in Static Circuit
• D. A special mode for satellite uplink

T4B09

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

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

T9B05

4. What happens as the frequency of a signal in coaxial cable is increased?

• A. The characteristic impedance decreases
• B. The loss decreases
• C. The loss increases
• D. The characteristic impedance increases

T0A08

5. Where should a fuse or circuit breaker be installed in a 120V AC power circuit?

• A. In series with the hot conductor only
• B. In parallel with the hot conductor only
• C. In parallel with the hot and neutral conductors
• D. In series with the hot and neutral conductors

T1D03

6. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Only when transmitting control commands to space stations or radio control craft
• B. Only when transmitting certain approved digital codes
• C. Never
• D. Only during contests

T2A07

7. What is meant by "repeater offset"?

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

T2B13

8. What is the purpose of a squelch function?

• A. Eliminate parasitic oscillations in an RF amplifier
• B. Reduce interference from impulse noise
• C. Reduce a CW transmitter's key clicks
• D. Mute the receiver audio when a signal is not present

T5A06

9. What is the unit of frequency?

• A. Farad
• B. Tesla
• C. Henry
• D. Hertz

T1E09

10. Which of the following are required for remote control operation?

• A. The control operator must indirectly manipulate the controls
• B. The control operator must be at the control point
• C. All these choices are correct
• D. A control operator is required at all times

T0B02

11. What is required when climbing an antenna tower?

• A. Have sufficient training on safe tower climbing techniques
• B. Use appropriate tie-off to the tower at all times
• C. All these choices are correct
• D. Always wear an approved climbing harness

T2C10

12. What information is contained in the preamble of a formal traffic message?

• A. The address of the intended recipient
• B. Information needed to track the message
• C. The email address of the originating station
• D. The telephone number of the addressee

T8B10

13. What is a LEO satellite?

• A. A highly elliptical orbit satellite
• B. A satellite in low energy operation mode
• C. A sun synchronous satellite
• D. A satellite in low earth orbit

T5D05

14. What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

• A. 13.5 ohms
• B. 18 ohms
• C. 8 ohms
• D. 0.125 ohms

T3B06

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

• A. Wavelength in meters equals frequency in megahertz divided by 300
• B. Wavelength in meters equals 300 divided by frequency in megahertz
• C. Wavelength in meters equals frequency in hertz divided by 300
• D. Wavelength in meters equals frequency in hertz multiplied by 300

T8A03

16. Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

• A. FM
• B. DRM
• C. SSB
• D. PM

T7C01

17. What is the primary purpose of a dummy load?

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

T0C06

18. Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations?

• A. By measurement of field strength using calibrated equipment
• B. By calculation based on FCC OET Bulletin 65
• C. All these choices are correct
• D. By calculation based on computer modeling

T9A08

19. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 50
• B. 112
• C. 19
• D. 12

T1F01

20. When must the station and its records be available for FCC inspection?

• A. At any time after written notification by the FCC of such inspection
• B. Only when presented with a valid warrant by an FCC official or government agent
• C. At any time ten days after notification by the FCC of such an inspection
• D. At any time upon request by an FCC representative

T4A09

21. How can you determine the length of time that equipment can be powered from a battery?

• A. Divide the battery ampere-hour rating by the average current draw of the equipment
• B. Multiply the square of the current rating of the battery by the input resistance of the equipment
• C. Divide the watt-hour rating of the battery by the peak power consumption of the equipment
• D. Multiply the watts per hour consumed by the equipment by the battery power rating

T1A06

22. What is the FCC Part 97 definition of a beacon?

• A. A bulletin sent by the FCC to announce a national emergency
• B. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
• C. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
• D. A government transmitter marking the amateur radio band edges

T8C09

23. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. IRLP
• B. D-STAR
• C. DMR
• D. EchoLink

T5C04

24. What is the unit of inductance?

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

T1B10

25. Where may SSB phone be used in amateur bands above 50 MHz?

• A. On any band if the power is limited to 25 watts
• B. Only in sub-bands allocated to General class or higher licensees
• C. Only on repeaters
• D. In at least some segment of all these bands

T6A11

26. Which of the following battery chemistries is not rechargeable?

• A. Lithium-ion
• B. Nickel-cadmium
• C. Lead-acid
• D. Carbon-zinc

T7D10

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

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

T1C03

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

• A. Only communications incidental to contest exchanges; all other communications are prohibited
• 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. Any communications that would be permitted by an international broadcast station

T5B03

29. Which is equal to one kilovolt?

• A. One million volts
• B. One one-thousandth of a volt
• C. One thousand volts
• D. One hundred volts

T6D02

30. What is a relay?

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

T6C07

31. What is component 8 in figure T-2?

• A. Light emitting diode
• B. Inductor
• C. Regulator IC
• D. Resistor

T6B12

32. What are the names of the electrodes of a bipolar junction transistor?

• A. Input, output, supply
• B. Signal, bias, power
• C. Emitter, base, collector
• D. Pole one, pole two, output

T3A03

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

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

T7A10

34. What device increases the transmitted output power from a transceiver?

• A. All these choices are correct
• B. An RF power amplifier
• C. An impedance network
• D. A voltage divider

T3C06

35. What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?

• A. F2 region refraction
• B. D region refraction
• C. Tropospheric ducting
• D. Faraday rotation