Practice Exam

T6C08

1. What is component 9 in figure T-2?

• A. Variable transformer
• B. Variable capacitor
• C. Variable inductor
• D. Variable resistor

T9A07

2. What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

• A. The SWR might decrease, decreasing the signal strength
• B. Signal strength is reduced due to the shielding effect of the vehicle
• C. The bandwidth of the antenna will decrease, increasing SWR
• D. All these choices are correct

T8C09

3. 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. DMR
• C. D-STAR
• D. EchoLink

T8D06

4. What does the abbreviation "PSK" mean?

• A. Packet Short Keying
• B. Phase Shift Keying
• C. Phased Slide Keying
• D. Pulse Shift Keying

T7A01

5. Which term describes the ability of a receiver to detect the presence of a signal?

• A. Selectivity
• B. Sensitivity
• C. Total Harmonic Distortion
• D. Linearity

T8A05

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

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

T0C13

7. Who is responsible for ensuring that no person is exposed to RF energy above the FCC exposure limits?

• A. The FCC
• B. The station licensee
• C. Anyone who is near an antenna
• D. The local zoning board

T5B06

8. Which is equal to 3000 milliamperes?

• A. 0.003 amperes
• B. 3 amperes
• C. 3,000,000 amperes
• D. 0.3 amperes

T3B09

9. What frequency range is referred to as UHF?

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

T1F09

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

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

T2B12

11. What is the purpose of the color code used on DMR repeater systems?

• A. Defines the minimum signal level required for access
• B. Must match the repeater color code for access
• C. Defines the frequency pair to use
• D. Identifies the codec used

T5C13

12. What is the abbreviation for kilohertz?

• A. khZ
• B. KHZ
• C. kHz
• D. khz

T0B08

13. Which is a proper grounding method for a tower?

• A. A connection between the tower base and a cold water pipe
• B. A single four-foot ground rod, driven into the ground no more than 12 inches from the base
• C. Separate eight-foot ground rods for each tower leg, bonded to the tower and each other
• D. A ferrite-core RF choke connected between the tower and ground

T5D07

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

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

T0A02

15. What health hazard is presented by electrical current flowing through the body?

• A. It may cause involuntary muscle contractions
• B. It may disrupt the electrical functions of cells
• C. All these choices are correct
• D. It may cause injury by heating tissue

T7B08

16. What should you do if something in a neighbor's home is causing harmful interference to your amateur station?

• A. Make sure your station meets the standards of good amateur practice
• B. All these choices are correct
• C. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference
• D. Work with your neighbor to identify the offending device

T9B06

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

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

T1C09

18. What is the grace period for renewal if an amateur license expires?

• A. Ten years
• B. Two years
• C. Three years
• D. Five years

T1B08

19. How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

• A. Digital transmissions are not permitted in those segments
• B. U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them
• C. U.S. amateurs must give foreign amateur stations priority in those segments
• D. International communications are not permitted in those segments

T8B07

20. What is Doppler shift in reference to satellite communications?

• A. An observed change in signal frequency caused by relative motion between the satellite and Earth station
• B. A mode where the satellite receives signals on one band and transmits on another
• C. A special digital communications mode for some satellites
• D. A change in the satellite orbit

T6B11

21. What is the term that describes a device's ability to amplify a signal?

• A. Forward voltage drop
• B. Forward resistance
• C. Gain
• D. On resistance

T6A11

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

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

T7C09

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

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

T1A06

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

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

T7D09

25. What is the characteristic appearance of a cold tin-lead solder joint?

• A. A rough or lumpy surface
• B. Dark black spots
• C. A bright or shiny surface
• D. Excessive solder

T3C03

26. What is a characteristic of VHF signals received via auroral backscatter?

• A. They are distorted and signal strength varies considerably
• B. They are often received from 10,000 miles or more
• C. They are generally strongest when your antenna is aimed west
• D. They occur only during winter nighttime hours

T4B07

27. What does a DMR "code plug" contain?

• A. The codec for digitizing audio
• B. Your call sign in CW for automatic identification
• C. Access information for repeaters and talkgroups
• D. The DMR software version

T1E04

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

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

T4A08

29. Which of the following conductors is preferred for bonding at RF?

• A. Twisted-pair cable
• B. Flat copper strap
• C. Copper braid removed from coaxial cable
• D. Steel wire

T3A01

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

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

T5A08

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

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

T2C03

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

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

T6D11

33. Which of the following is a resonant or tuned circuit?

• A. An inductor and a capacitor in series or parallel
• B. A linear voltage regulator
• C. A circuit designed to provide high-fidelity audio
• D. A resistor circuit used for reducing standing wave ratio

T2A10

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

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

T1D02

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

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