Practice Exam

T9B09

1. What can cause erratic changes in SWR?

• A. Over-modulation
• B. Overload from a strong local station
• C. Local thunderstorm
• D. Loose connection in the antenna or feed line

T5C12

2. What is impedance?

• A. The opposition to AC current flow
• B. The power handling capability of a component
• C. The Q or Quality Factor of a component
• D. The inverse of resistance

T1A08

3. Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

• A. Frequency Spectrum Manager appointed by the FCC
• B. Volunteer Frequency Coordinator recognized by local amateurs
• C. International Telecommunication Union
• D. FCC Regional Field Office

T6A07

4. What electrical component is typically constructed as a coil of wire?

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

T3C02

5. What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

• A. HF antennas are generally smaller
• B. HF accommodates wider bandwidth signals
• C. Long-distance ionospheric propagation is far more common on HF
• D. There is less atmospheric interference (static) on HF

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

T1E01

7. When may an amateur station transmit without a control operator?

• A. When the station licensee is away and another licensed amateur is using the station
• B. When the transmitting station is an auxiliary station
• C. When using automatic control, such as in the case of a repeater
• D. Never

T7B06

8. 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. 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
• B. All these choices are correct
• C. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• D. Immediately turn off your transmitter and contact the nearest FCC office for assistance

T3B11

9. What is the approximate velocity of a radio wave in free space?

• A. 300,000,000 meters per second
• B. 300,000,000 miles per hour
• C. 150,000 meters per second
• D. 150,000 miles per hour

T2C10

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

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

T7A10

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

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

T7D09

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

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

T0C04

13. What factors affect the RF exposure of people near an amateur station antenna?

• A. Distance from the antenna to a person
• B. All these choices are correct
• C. Frequency and power level of the RF field
• D. Radiation pattern of the antenna

T1F01

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

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

T5D08

15. What is the current through a 100-ohm resistor connected across 200 volts?

• A. 100 amperes
• B. 0.5 amperes
• C. 20,000 amperes
• D. 2 amperes

T1C02

16. Who may select a desired call sign under the vanity call sign rules?

• A. Any licensed amateur
• B. Only a licensed amateur with a General or Amateur Extra Class license
• C. Only a licensed amateur with an Amateur Extra Class license
• D. Only a licensed amateur who has been licensed continuously for more than 10 years

T1B03

17. Which frequency is in the 6 meter amateur band?

• A. 222.15 MHz
• B. 28.50 MHz
• C. 52.525 MHz
• D. 49.00 MHz

T9A05

18. Which of the following increases the resonant frequency of a dipole antenna?

• A. Inserting coils in series with radiating wires
• B. Adding capacitive loading to the ends of the radiating wires
• C. Shortening it
• D. Lengthening it

T4A05

19. Where should an RF power meter be installed?

• A. In parallel with the push-to-talk line and the antenna
• B. At the power supply output
• C. In the power supply cable, as close as possible to the radio
• D. In the feed line, between the transmitter and antenna

T8B04

20. What mode of transmission is commonly used by amateur radio satellites?

• A. All these choices are correct
• B. CW/data
• C. SSB
• D. FM

T6D10

21. What is the function of component 2 in figure T-1?

• A. Supply electrical energy
• B. Convert electrical energy into radio waves
• C. Give off light when current flows through it
• D. Control the flow of current

T5A06

22. What is the unit of frequency?

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

T5B08

23. Which is equal to 1,000,000 picofarads?

• A. 0.001 microfarads
• B. 1 microfarad
• C. 1000 microfarads
• D. 1,000,000,000 microfarads

T4B03

24. How is squelch adjusted so that a weak FM signal can be heard?

• A. Turn on the anti-squelch function
• B. Turn up the audio level until it overcomes the squelch threshold
• C. Enable squelch enhancement
• D. Set the squelch threshold so that receiver output audio is on all the time

T6B02

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

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

T3A08

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

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

T0B11

27. Which of the following establishes grounding requirements for an amateur radio tower or antenna?

• A. Local electrical codes
• B. FAA tower lighting regulations
• C. FCC Part 97 rules
• D. UL recommended practices

T8D05

28. Which of the following is an application of APRS?

• A. Providing real-time tactical digital communications in conjunction with a map showing the locations of stations
• B. Providing information on the number of stations signed into a repeater
• C. Providing voice over internet connection between repeaters
• D. Showing automatically the number of packets transmitted via PACTOR during a specific time interval

T8C08

29. What is the Internet Radio Linking Project (IRLP)?

• A. A technique to connect amateur radio systems, such as repeaters, via the internet using Voice Over Internet Protocol (VoIP)
• B. A system for informing amateurs in real time of the frequency of active DX stations
• C. A system for providing access to websites via amateur radio
• D. A technique for measuring signal strength of an amateur transmitter via the internet

T2B01

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

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

T1D11

31. When may an amateur station transmit without identifying on the air?

• A. When transmitting signals to control model craft
• B. When the transmitted power level is below 1 watt
• C. When the transmissions are of a brief nature to make station adjustments
• D. When the transmissions are unmodulated

T7C11

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

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

T0A01

33. Which of the following is a safety hazard of a 12-volt storage battery?

• A. Touching both terminals with the hands can cause electrical shock
• B. Shorting the terminals can cause burns, fire, or an explosion
• C. RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas
• D. All these choices are correct

T6C12

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

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

T2A11

35. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Diplex
• B. Multiplex
• C. Simplex
• D. Full duplex