Practice Exam

T9B03

1. 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 has less loss than any other type of feed line
• C. It can handle more power than any other type of feed line
• D. It is less expensive than any other type of feed line

T7C07

2. What happens to power lost in a feed line?

• A. It is radiated as harmonics
• B. It increases the SWR
• C. It distorts the signal
• D. It is converted into heat

T6B08

3. What does the abbreviation FET stand for?

• A. Field Effect Transistor
• B. Frequency Emission Transmitter
• C. Fast Electron Transistor
• D. Free Electron Transmitter

T4A02

4. Which of the following should be considered when selecting an accessory SWR meter?

• A. The distance that the meter will be located from the antenna
• B. The types of modulation being used at the station
• C. All these choices are correct
• D. The frequency and power level at which the measurements will be made

T3A01

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

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

T5B07

6. Which is equal to 3.525 MHz?

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

T7B06

7. 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. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• D. 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

T8C01

8. Which of the following methods is used to locate sources of noise interference or jamming?

• A. Radio direction finding
• B. Doppler radar
• C. Echolocation
• D. Phase locking

T5A10

9. Which term describes the rate at which electrical energy is used?

• A. Current
• B. Voltage
• C. Power
• D. Resistance

T7A11

10. Where is an RF preamplifier installed?

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

T0B08

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

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

T0C07

12. What hazard is created by touching an antenna during a transmission?

• A. Electrocution
• B. RF burn to skin
• C. All these choices are correct
• D. Radiation poisoning

T3B03

13. What are the two components of a radio wave?

• A. Voltage and current
• B. Impedance and reactance
• C. Ionizing and non-ionizing radiation
• D. Electric and magnetic fields

T8D07

14. 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. An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
• D. A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel

T5D12

15. What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

• A. 12 volts
• B. 20 volts
• C. 8 volts
• D. 0.2 volts

T1A08

16. 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

T5C11

17. How much current is required to deliver 120 watts at a voltage of 12 volts DC?

• A. 0.1 amperes
• B. 132 amperes
• C. 10 amperes
• D. 12 amperes

T7D10

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

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

T2C06

19. What is the Amateur Radio Emergency Service (ARES)?

• A. A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies
• B. A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
• C. A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service
• D. A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency

T8A04

20. Which type of modulation is commonly used for VHF and UHF voice repeaters?

• A. PSK
• B. FM or PM
• C. AM
• D. SSB

T4B12

21. What is the result of tuning an FM receiver above or below a signal's frequency?

• A. Change in audio pitch
• B. Generation of a heterodyne tone
• C. Distortion of the signal's audio
• D. Sideband inversion

T6C11

22. What is component 4 in figure T-3?

• A. Ground
• B. Dummy load
• C. Transmitter
• D. Antenna

T3C11

23. 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. Radio waves are blocked by dust particles
• C. Radio signals move somewhat faster than the speed of light
• D. The atmosphere refracts radio waves slightly

T9A03

24. Which of the following describes a simple dipole oriented parallel to Earth's surface?

• A. A ground-wave antenna
• B. A vertically polarized antenna
• C. A horizontally polarized antenna
• D. A travelling-wave antenna

T1C11

25. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. Yes, for up to one year
• B. No, you must wait until the license has been renewed
• C. Yes, for up to two years
• D. Yes, as soon as you apply for renewal

T6D05

26. What type of circuit controls the amount of voltage from a power supply?

• A. Filter
• B. Phase inverter
• C. Regulator
• D. Oscillator

T0A04

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

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

T1E09

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

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

T1B11

29. What is the maximum peak envelope power output for Technician class operators in their HF band segments?

• A. 200 watts
• B. 10 watts
• C. 100 watts
• D. 50 watts

T6A01

30. What electrical component opposes the flow of current in a DC circuit?

• A. Inverter
• B. Resistor
• C. Transformer
• D. Inductor

T2A12

31. What should you do before calling CQ?

• A. All these choices are correct
• B. Make sure you are authorized to use that frequency
• C. Ask if the frequency is in use
• D. Listen first to be sure that no one else is using the frequency

T2B01

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

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

T1F04

33. What language may you use for identification when operating in a phone sub-band?

• A. Any language recognized by the United Nations
• B. Any language recognized by the ITU
• C. English
• D. English, French, or Spanish

T8B01

34. What telemetry information is typically transmitted by satellite beacons?

• A. The signal strength of received signals
• B. Time of day accurate to plus or minus 1/10 second
• C. Health and status of the satellite
• D. All these choices are correct

T1D11

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

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