Practice Exam

T0C05

1. Why do exposure limits vary with frequency?

• A. Lower frequency RF fields do not penetrate the human body
• B. Lower frequency RF fields have more energy than higher frequency fields
• C. Higher frequency RF fields are transient in nature
• D. The human body absorbs more RF energy at some frequencies than at others

T1B09

2. Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

• A. To allow for transmitter frequency drift
• B. To allow for calibration error in the transmitter frequency display
• C. So that modulation sidebands do not extend beyond the band edge
• D. All these choices are correct

T1D05

3. When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?

• A. Never
• B. When selling amateur radio equipment and not on a regular basis
• C. When no profit is made on the sale
• D. When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives

T0B02

4. 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

T8B04

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

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

T8C09

6. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. DMR
• B. IRLP
• C. D-STAR
• D. EchoLink

T8A11

7. What is the approximate bandwidth required to transmit a CW signal?

• A. 2.4 kHz
• B. 150 Hz
• C. 1000 Hz
• D. 15 kHz

T7C08

8. Which instrument can be used to determine SWR?

• A. Voltmeter
• B. Directional wattmeter
• C. Ohmmeter
• D. Iambic pentameter

T6A03

9. What electrical parameter is controlled by a potentiometer?

• A. Resistance
• B. Inductance
• C. Capacitance
• D. Field strength

T4A06

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

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

T3A12

11. What is the effect of fog and rain on signals in the 10 meter and 6 meter bands?

• A. Deflection
• B. Range increase
• C. Absorption
• D. There is little effect

T7B08

12. 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. All these choices are correct
• C. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference
• D. Make sure your station meets the standards of good amateur practice

T1C03

13. What types of international communications are an FCC-licensed amateur radio station permitted to make?

• A. Any communications that would be permitted by an international broadcast station
• B. Communications incidental to conducting business or remarks of a personal nature
• C. Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
• D. Only communications incidental to contest exchanges; all other communications are prohibited

T7A03

14. Which of the following is used to convert a signal from one frequency to another?

• A. Inverter
• B. Mixer
• C. Amplifier
• D. Phase splitter

T8D03

15. What kind of data can be transmitted by APRS?

• A. Weather data
• B. Text messages
• C. All these choices are correct
• D. GPS position data

T2C10

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

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

T1E09

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

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

T7D02

18. How is a voltmeter connected to a component to measure applied voltage?

• A. In quadrature
• B. In series
• C. In parallel
• D. In phase

T3C04

19. Which of the following types of propagation is most commonly associated with occasional strong signals on the 10, 6, and 2 meter bands from beyond the radio horizon?

• A. Sporadic E
• B. D region absorption
• C. Gray-line propagation
• D. Backscatter

T3B03

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

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

T1F02

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

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

T4B08

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

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

T5B04

23. Which is equal to one microvolt?

• A. One one-millionth of a volt
• B. One thousand kilovolts
• C. One million volts
• D. One one-thousandth of a volt

T9A11

24. What is antenna gain?

• A. The additional power that is added to the transmitter power
• B. The increase in signal strength in a specified direction compared to a reference antenna
• C. The additional power that is required in the antenna when transmitting on a higher frequency
• D. The increase in impedance on receive or transmit compared to a reference antenna

T5A09

25. Which of the following describes alternating current?

• A. Current that alternates between positive and negative directions
• B. Current that alternates between a negative direction and zero
• C. All these answers are correct
• D. Current that alternates between a positive direction and zero

T1A06

26. 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 government transmitter marking the amateur radio band edges
• C. A bulletin sent by the FCC to announce a national emergency
• D. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service

T6B02

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

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

T0A10

28. What hazard is caused by charging or discharging a battery too quickly?

• A. Inverse memory effect
• B. Excess output ripple
• C. Half-wave rectification
• D. Overheating or out-gassing

T6C08

29. What is component 9 in figure T-2?

• A. Variable inductor
• B. Variable resistor
• C. Variable capacitor
• D. Variable transformer

T6D11

30. Which of the following is a resonant or tuned circuit?

• A. A resistor circuit used for reducing standing wave ratio
• B. A linear voltage regulator
• C. An inductor and a capacitor in series or parallel
• D. A circuit designed to provide high-fidelity audio

T2B08

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

• A. Both stations should choose another frequency to avoid conflict
• B. The stations should negotiate continued use of the frequency
• C. Interference is inevitable, so no action is required
• D. Use subaudible tones so both stations can share the frequency

T5C04

32. What is the unit of inductance?

• A. The ohm
• B. The coulomb
• C. The henry
• D. The farad

T5D08

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

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

T2A06

34. Which of the following is required when making on-the-air test transmissions?

• A. Identify the transmitting station
• B. Notify the FCC of the transmissions
• C. All these choices are correct
• D. Conduct tests only between 10 p.m. and 6 a.m. local time

T9B02

35. What is the most common impedance of coaxial cables used in amateur radio?

• A. 50 ohms
• B. 600 ohms
• C. 12 ohms
• D. 8 ohms