Practice Exam

T7A08

1. Which of the following describes combining speech with an RF carrier signal?

• A. Modulation
• B. Low-pass filtering
• C. Oscillation
• D. Impedance matching

T7B06

2. 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. All these choices are correct
• B. 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
• 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

T1E10

3. Which of the following is an example of remote control as defined in Part 97?

• A. All these choices are correct
• B. Controlling a model aircraft, boat, or car by amateur radio
• C. Repeater operation
• D. Operating the station over the internet

T1B03

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

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

T3A10

5. What effect does multi-path propagation have on data transmissions?

• A. No significant changes will occur if the signals are transmitted using FM
• B. Transmission rates must be decreased by a factor equal to the number of separate paths observed
• C. Error rates are likely to increase
• D. Transmission rates must be increased by a factor equal to the number of separate paths observed

T8C03

6. What operating activity involves contacting as many stations as possible during a specified period?

• A. Public service events
• B. Simulated emergency exercises
• C. Net operations
• D. Contesting

T8B12

7. Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

• A. Your signal strength on the downlink should be about the same as the beacon
• B. Check your signal strength report in the telemetry data
• C. Listen for distortion on your downlink signal
• D. All these choices are correct

T6D01

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

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

T3B01

9. What is the relationship between the electric and magnetic fields of an electromagnetic wave?

• A. They travel at different speeds
• B. They are at right angles
• C. They revolve in opposite directions
• D. They are in parallel

T9B12

10. What is standing wave ratio (SWR)?

• A. The transmitter efficiency ratio
• B. The ratio of amplifier power output to input
• C. An indication of the quality of your station's ground connection
• D. A measure of how well a load is matched to a transmission line

T8A10

11. What is the approximate bandwidth of AM fast-scan TV transmissions?

• A. About 3 MHz
• B. About 6 MHz
• C. More than 10 MHz
• D. About 1 MHz

T7D04

12. Which instrument is used to measure electric current?

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

T6B06

13. How is the cathode lead of a semiconductor diode often marked on the package?

• A. With a stripe
• B. With the letter K
• C. With the letter C
• D. With the word "cathode"

T6C02

14. What is component 1 in figure T-1?

• A. Resistor
• B. Connector
• C. Transistor
• D. Battery

T1D04

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

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

T1C11

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

T9A02

17. Which of the following describes a type of antenna loading?

• A. Electrically lengthening by inserting inductors in radiating elements
• B. Strengthening the radiating elements of a beam antenna to better resist wind damage
• C. Inserting a resistor in the radiating portion of the antenna to make it resonant
• D. Installing a spring in the base of a mobile vertical antenna to make it more flexible

T0B02

18. What is required when climbing an antenna tower?

• A. All these choices are correct
• B. Have sufficient training on safe tower climbing techniques
• C. Use appropriate tie-off to the tower at all times
• D. Always wear an approved climbing harness

T6A07

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

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

T7C02

20. Which of the following is used to determine if an antenna is resonant at the desired operating frequency?

• A. An antenna analyzer
• B. A VTVM
• C. A Q meter
• D. A frequency counter

T5D06

21. What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

• A. 3 ohms
• B. 48 ohms
• C. 8 ohms
• D. 16 ohms

T2B12

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

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

T4B08

23. What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

• A. Permits monitoring several modes at once by selecting a separate filter for each mode
• B. Increases the number of frequencies that can be stored in memory
• C. Increases the amount of offset between receive and transmit frequencies
• D. Permits noise or interference reduction by selecting a bandwidth matching the mode

T0A04

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

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

T0C09

25. How can you make sure your station stays in compliance with RF safety regulations?

• A. By making sure your antennas have low SWR
• B. All these choices are correct
• C. By re-evaluating the station whenever an item in the transmitter or antenna system is changed
• D. By informing the FCC of any changes made in your station

T3C05

26. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

• A. Knife-edge diffraction
• B. Quantum tunneling
• C. Doppler shift
• D. Faraday rotation

T1A06

27. 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 government transmitter marking the amateur radio band edges
• D. A bulletin sent by the FCC to announce a national emergency

T5A06

28. What is the unit of frequency?

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

T5C06

29. What does the abbreviation "RF" mean?

• A. The real frequency transmitted as opposed to the apparent frequency
• B. Radio frequency signals of all types
• C. The resonant frequency of a tuned circuit
• D. Reflective force in antenna transmission lines

T1F05

30. What method of call sign identification is required for a station transmitting phone signals?

• A. Send the call sign followed by the indicator RPT
• B. Send the call sign using a CW or phone emission
• C. Send the call sign followed by the indicator R
• D. Send the call sign using only a phone emission

T2C05

31. What does the term "traffic" refer to in net operation?

• A. The number of stations checking in and out of a net
• B. Requests to activate the net by a served agency
• C. Operation by mobile or portable stations
• D. Messages exchanged by net stations

T2A08

32. What is the meaning of the procedural signal "CQ"?

• A. Test transmission, no reply expected
• B. Calling any station
• C. Only the called station should transmit
• D. Call on the quarter hour

T4A06

33. What signals are used in a computer-radio interface for digital mode operation?

• A. Antenna and RF power
• B. Receive and transmit mode, status, and location
• C. NMEA GPS location and DC power
• D. Receive audio, transmit audio, and transmitter keying

T8D07

34. Which of the following describes DMR?

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

T5B05

35. Which is equal to 500 milliwatts?

• A. 5 watts
• B. 0.02 watts
• C. 50 watts
• D. 0.5 watts