Practice Exam

T7D06

1. Which of the following can damage a multimeter?

• A. Failing to connect one of the probes to ground
• B. Attempting to measure voltage when using the resistance setting
• C. Not allowing it to warm up properly
• D. Attempting to measure resistance using the voltage setting

T4B09

2. How is a specific group of stations selected on a DMR digital voice transceiver?

• A. By retrieving the frequencies from transceiver memory
• B. By entering the group's identification code
• C. By enabling the group's CTCSS tone
• D. By inserting a five-pin, pre-programmed code plug

T3A11

3. Which region of the atmosphere can reflect HF radio waves?

• A. The electrosphere
• B. The troposphere
• C. The ionosphere
• D. The stratosphere

T4A08

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

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

T9B03

5. 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

T6C12

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

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

T5C09

7. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

• A. 3.8 watts
• B. 138 watts
• C. 23.8 watts
• D. 0.7 watts

T1B08

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

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

T1F02

9. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. At least every 10 minutes during and at the end of a communication
• B. Once every hour
• C. At the end of every transmission
• D. Never, the tactical call is sufficient

T8A09

10. What is the approximate bandwidth of an FM voice signal on VHF repeaters?

• A. Between 10 and 15 kHz
• B. Less than 500 Hz
• C. About 150 kHz
• D. Between 50 and 125 kHz

T2C12

11. Which of the following requires certification by a civil defense agency?

• A. RACES
• B. SKYWARN
• C. ARES
• D. MARS

T5A11

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

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

T5B01

13. How many milliamperes is 1.5 amperes?

• A. 1500 milliamperes
• B. 1,500,000 milliamperes
• C. 0.0015 milliamperes
• D. 0.0000015 milliamperes

T0C12

14. How does RF radiation differ from ionizing radiation (radioactivity)?

• A. RF radiation can only be detected with an RF dosimeter
• B. RF radiation is perfectly safe
• C. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA
• D. RF radiation is limited in range to a few feet

T8C07

15. What is Voice Over Internet Protocol (VoIP)?

• A. A method of delivering voice communications over the internet using digital techniques
• B. A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
• C. A technique employed to "spot" DX stations via the internet
• D. A set of rules specifying how to identify your station when linked over the internet to another station

T1A08

16. Who recommends transmit/receive channels for repeater and auxiliary stations?

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

T7B08

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

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

T3B01

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

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

T2A08

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

• A. "Communication Quality," used to indicate transmitted audio clarity
• B. A shortened form of the term "Contest QSO"
• C. Only the called station should transmit
• D. Calling any station

T7A08

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

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

T1C02

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

• A. Only a licensed amateur with a General or Amateur Extra Class license
• B. Any licensed amateur
• 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

T2B08

22. Which of the following applies when two stations transmitting on the same frequency interfere with each other?

• A. Use subaudible tones so both stations can share the frequency
• B. Both stations should choose another frequency to avoid conflict
• C. The stations should negotiate continued use of the frequency
• D. Whichever station was on the frequency first has preemptive rights to the frequency

T6B01

23. Which is true about forward voltage drop in a diode?

• A. It has no impact on the voltage delivered to the load
• B. It indicates that the diode is defective
• C. It is proportional to peak inverse voltage
• D. It is lower in some diode types than in others

T9A08

24. Why is a 19-inch-long vertical antenna often used on 2 meters?

• A. It is a resonant half-wave
• B. It has low RF radiation exposure
• C. It has high gain
• D. It is a resonant quarter-wave

T7C01

25. What is the primary purpose of a dummy load?

• A. To improve the signal-to-noise ratio of a receiver
• B. To improve the efficiency of an antenna
• C. To prevent over-modulation of a transmitter
• D. To prevent transmitting signals over the air when making tests

T0B02

26. What is required when climbing an antenna tower?

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

T0A04

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

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

T6D02

28. What is a relay?

• A. A current-controlled amplifier
• B. An electrically-controlled switch
• C. An inverting amplifier
• D. A pass transistor

T3C03

29. What is one characteristic of VHF signals received via auroral backscatter?

• A. They are distorted, with a characteristic raspy sound
• B. They are often received from 10,000 miles or more
• C. They occur only during winter nighttime hours
• D. They are generally strongest when your antenna is aimed west

T1D01

30. With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

• A. Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications
• B. Any country banned from making such communications by the American Radio Relay League (ARRL)
• C. Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
• D. Any country banned from such communications by the International Amateur Radio Union (IARU)

T8B03

31. Which of the following are provided by satellite tracking programs?

• A. Maps showing the real-time position of the satellite track over Earth
• B. The apparent frequency of the satellite transmission, including effects of Doppler shift
• C. All these choices are correct
• D. The time, azimuth, and elevation of the start, maximum altitude, and end of a pass

T6A04

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

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

T5D11

33. What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

• A. 1 volt
• B. 11 volts
• C. 9 volts
• D. 10 volts

T8D10

34. Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?

• A. Earth-Moon-Earth
• B. All these choices are correct
• C. Meteor scatter
• D. Weak signal propagation beacons

T1E06

35. When, other than during an emergency, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

• A. When using a club station whose trustee holds an Amateur Extra Class license
• B. At no time
• C. As part of a multi-operator contest team
• D. When designated as the control operator by an Amateur Extra Class licensee