Practice Exam

T8D07

1. Which of the following describes DMR?

• A. A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
• B. An automatic position tracking mode for FM mobiles communicating through repeaters
• C. A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel
• D. An automatic computer logging technique for hands-off logging when communicating while operating a vehicle

T1F06

2. Which of the following self-assigned indicators are acceptable when using a phone transmission?

• A. All these choices are correct
• B. KL7CC slant W3
• C. KL7CC stroke W3
• D. KL7CC slash W3

T3A08

3. What is a likely cause of irregular fading of signals propagated by the ionosphere?

• A. Random combining of signals arriving via different paths
• B. Intermodulation distortion
• C. Frequency shift due to Faraday rotation
• D. Interference from thunderstorms

T7B06

4. Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

• A. Immediately turn off your transmitter and contact the nearest FCC office for assistance
• B. All these choices are correct
• C. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
• D. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated

T1D04

5. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When the music produces no spurious emissions
• B. When incidental to an authorized retransmission of manned spacecraft communications
• C. When the music is transmitted above 1280 MHz
• D. When transmissions are limited to less than three minutes per hour

T8A12

6. Which of the following is a disadvantage of FM compared with single sideband?

• A. Voice quality is poorer
• B. FM signals are harder to tune
• C. Only one signal can be received at a time
• D. All these choices are correct

T6D01

7. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Reflector
• B. Rectifier
• C. Transformer
• D. Amplifier

T2A01

8. What is a common repeater frequency offset in the 2 meter band?

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

T1C04

9. What may happen if the FCC is unable to reach you by email?

• A. Fine and suspension of operator license
• B. Revocation of access to the license record in the FCC system
• C. Revocation of the station license or suspension of the operator license
• D. Nothing; there is no such requirement

T5A11

10. What type of current flow is opposed by resistance?

• A. All these choices are correct
• B. Alternating current
• C. Direct current
• D. RF current

T2B02

11. What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

• A. CTCSS
• B. Tone burst
• C. Carrier squelch
• D. DTMF

T2C08

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

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

T7C11

13. What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

• A. It cannot be used at below freezing temperatures
• B. It cannot be used for VHF or UHF antennas
• C. It requires special techniques to prevent moisture in the cable
• D. It has more loss per foot

T3B05

14. What is the relationship between wavelength and frequency?

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

T6B02

15. What electronic component allows current to flow in only one direction?

• A. Driven element
• B. Fuse
• C. Diode
• D. Resistor

T5D14

16. In which type of circuit is voltage the same across all components?

• A. Series
• B. Resonant
• C. Parallel
• D. Branch

T6C12

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

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

T3C11

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

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

T5C01

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

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

T9A07

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

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

T1B10

21. 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 on repeaters
• C. Only in sub-bands allocated to General class or higher licensees
• D. In at least some segment of all these bands

T8C06

22. How is over the air access to IRLP nodes accomplished?

• A. By obtaining a password that is sent via voice to the node
• B. By using DTMF signals
• C. By entering the proper internet password
• D. By using CTCSS tone codes

T4B05

23. What does the scanning function of an FM transceiver do?

• A. Prevents interference to nearby repeaters
• B. Tunes through a range of frequencies to check for activity
• C. Checks incoming signal deviation
• D. Checks for messages left on a digital bulletin board

T1A06

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

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

T7A04

25. Which term describes the ability of a receiver to discriminate between multiple signals?

• A. Harmonic distortion
• B. Discrimination ratio
• C. Selectivity
• D. Sensitivity

T5B07

26. Which is equal to 3.525 MHz?

• A. 35.25 kHz
• B. 3525 kHz
• C. 3,525,000 kHz
• D. 0.003525 kHz

T0B04

27. Which of the following is an important safety precaution to observe when putting up an antenna tower?

• A. Insulate the base of the tower to avoid lightning strikes
• B. All these choices are correct
• C. Look for and stay clear of any overhead electrical wires
• D. Wear a ground strap connected to your wrist at all times

T6A04

28. What electrical component stores energy in an electric field?

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

T9B03

29. Why is coaxial cable the most common feed line for amateur radio antenna systems?

• A. It is easy to use and requires few special installation considerations
• B. It is less expensive than any other type of feed line
• C. It can handle more power than any other type of feed line
• D. It has less loss than any other type of feed line

T7D01

30. Which instrument would you use to measure electric potential?

• A. A wavemeter
• B. An ammeter
• C. An ohmmeter
• D. A voltmeter

T0A08

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

T1E07

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

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

T0C13

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

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

T8B06

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

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

T4A10

35. What function is performed with a transceiver and a digital mode hot spot?

• A. RTTY encoding and decoding without a computer
• B. High-speed digital communications for meteor scatter
• C. FT8 digital communications via AFSK
• D. Communication using digital voice or data systems via the internet