Practice Exam

T3B05

1. What is the relationship between wavelength and frequency?

• A. Wavelength gets shorter as frequency increases
• B. Wavelength and frequency are unrelated
• C. Wavelength and frequency increase as path length increases
• D. Wavelength gets longer as frequency increases

T3C08

2. What causes tropospheric ducting?

• A. Discharges of lightning during electrical storms
• B. Temperature inversions in the atmosphere
• C. Updrafts from hurricanes and tornadoes
• D. Sunspots and solar flares

T9A10

3. In which direction does a half-wave dipole antenna radiate the strongest signal?

• A. In the direction of the feed line
• B. Equally in all directions
• C. Broadside to the antenna
• D. Off the ends of the antenna

T1E04

4. What determines the transmitting frequency privileges of an amateur station?

• A. The highest class of operator license held by anyone on the premises
• B. The class of operator license held by the control operator
• C. The frequencies printed on the license grant
• D. The frequency authorized by the frequency coordinator

T5B10

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

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

T0C10

6. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It affects the average exposure to radiation
• B. It takes into account the thermal effects of the final amplifier
• C. It affects the peak exposure to radiation
• D. It takes into account the antenna feed line loss

T6A11

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

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

T1D01

8. With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

• A. Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
• B. Any country banned from making such communications by the American Radio Relay League (ARRL)
• C. Any country banned from such communications by the International Amateur Radio Union (IARU)
• D. Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications

T5D04

9. What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

• A. 3 ohms
• B. 270 ohms
• C. 30 ohms
• D. 93 ohms

T1A06

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

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

T7C01

11. 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 improve the efficiency of an antenna
• D. To prevent transmitting signals over the air when making tests

T6B07

12. What causes a light-emitting diode (LED) to emit light?

• A. Capacitively-coupled RF signal
• B. Forward current
• C. Inductively-coupled RF signal
• D. Reverse current

T5C10

13. How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

• A. 30 watts
• B. 4.8 watts
• C. 0.208 watts
• D. 14.5 watts

T1C03

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

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

T2A10

15. What is a band plan, beyond the privileges established by the FCC?

• A. A voluntary guideline for using different modes or activities within an amateur band
• B. A plan devised by a club to indicate frequency band usage
• C. A list of operating schedules
• D. A list of available net frequencies

T6C05

16. What is component 4 in figure T-1?

• A. Ground symbol
• B. Resistor
• C. Transistor
• D. Battery

T4B02

17. Which of the following can be used to enter a transceiver's operating frequency?

• A. The CTCSS or DTMF encoder
• B. The keypad or VFO knob
• C. The Automatic Frequency Control
• D. All these choices are correct

T8D13

18. What is FT8?

• A. A digital mode capable of low signal-to-noise operation
• B. A digital slow-scan TV mode with forward error correction and automatic color compensation
• C. An eight channel multiplex mode for FM repeaters
• D. A wideband FM voice mode

T7B11

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

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

T7D07

20. Which of the following measurements are made using a multimeter?

• A. All these choices are correct
• B. Signal strength and noise
• C. Impedance and reactance
• D. Voltage and resistance

T0A04

21. What is the purpose of a fuse in an electrical circuit?

• A. To prevent power supply ripple from damaging a component
• B. All these choices are correct
• C. To limit current to prevent shocks
• D. To remove power in case of overload

T3A07

22. What weather condition might decrease range at microwave frequencies?

• A. High winds
• B. Precipitation
• C. Low barometric pressure
• D. Colder temperatures

T2C08

23. Which of the following is a characteristic of good traffic handling?

• A. Ensuring that any newsworthy messages are relayed to the news media
• B. All these choices are correct
• C. Making decisions as to whether messages are worthy of relay or delivery
• D. Passing messages exactly as received

T1F07

24. Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

• A. The foreign station must be in a country with which the U.S. has a third party agreement
• B. The person must be a U.S. citizen
• C. The licensed control operator must do the station identification
• D. All these choices are correct

T2B01

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

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

T5A09

26. Which of the following describes alternating current?

• A. All these answers are correct
• B. Current that alternates between a negative direction and zero
• C. Current that alternates between a positive direction and zero
• D. Current that alternates between positive and negative directions

T8C05

27. What is a grid locator?

• A. A letter-number designator assigned to an azimuth and elevation
• B. An instrument for radio direction finding
• C. An instrument for neutralizing a final amplifier
• D. A letter-number designator assigned to a geographic location

T4A07

28. Which of the following connections is made between a computer and a transceiver to use computer software when operating digital modes?

• A. Computer "line out" to transceiver speaker connector
• B. Computer "line in" to transceiver push-to-talk
• C. Computer "line in" to transceiver speaker connector
• D. Computer "line out" to transceiver push-to-talk

T1B05

29. How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

• A. Fixed digital message forwarding systems only
• B. Spread spectrum only
• C. Emergency traffic only
• D. Fast-scan television only

T6D07

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

• A. FET
• B. Bipolar transistor
• C. LED
• D. Zener diode

T7A11

31. Where is an RF preamplifier installed?

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

T8A05

32. Which of the following types of signal has the narrowest bandwidth?

• A. FM voice
• B. CW
• C. Slow-scan TV
• D. SSB voice

T0B10

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

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

T9B02

34. What is the most common impedance of coaxial cables used in amateur radio?

• A. 8 ohms
• B. 600 ohms
• C. 50 ohms
• D. 12 ohms

T8B09

35. What causes spin fading of satellite signals?

• A. Rotation of the satellite and its antennas
• B. Doppler shift of the received signal
• C. Interfering signals within the satellite uplink band
• D. Circular polarized noise interference radiated from the sun