Practice Exam

T4A01

1. Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

• A. 13.8 volts at 4 amperes
• B. 24.0 volts at 12 amperes
• C. 13.8 volts at 12 amperes
• D. 24.0 volts at 4 amperes

T7A04

2. Which term describes the ability of a receiver to discriminate between multiple signals?

• A. Discrimination ratio
• B. Selectivity
• C. Sensitivity
• D. Harmonic distortion

T2C09

3. Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

• A. Yes, but only when part of a RACES emergency plan
• B. Yes, but only when part of a FEMA emergency plan
• C. Yes, but only in situations involving the immediate safety of human life or protection of property
• D. No

T2A10

4. What is a band plan, beyond the privileges established by the FCC?

• A. A voluntary guideline for using different modes or activities within an amateur band
• B. A list of operating schedules
• C. A plan devised by a club to indicate frequency band usage
• D. A list of available net frequencies

T0C03

5. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. It increases by a factor of 3
• B. It decreases by 50 percent
• C. There is no adjustment allowed for lower duty cycle
• D. It increases by a factor of 2

T5B13

6. Which is equal to 2425 MHz?

• A. 2425 GHz
• B. 2.425 GHz
• C. 24.25 GHz
• D. 0.002425 GHz

T1A02

7. Which agency regulates and enforces the rules for the Amateur Radio Service in the United States?

• A. The FCC
• B. FEMA
• C. All these choices are correct
• D. Homeland Security

T7C04

8. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

• A. Zero
• B. Full Scale
• C. 50:50
• D. 1:1

T5A06

9. What is the unit of frequency?

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

T2B06

10. What type of signaling uses pairs of audio tones?

• A. GPRS
• B. D-STAR
• C. CTCSS
• D. DTMF

T4B07

11. What does a DMR "code plug" contain?

• A. The DMR software version
• B. Your call sign in CW for automatic identification
• C. Access information for repeaters and talkgroups
• D. The codec for digitizing audio

T1B09

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

T1C04

13. What may happen if the FCC is unable to reach you by email?

• A. Revocation of access to the license record in the FCC system
• B. Fine and suspension of operator license
• C. Nothing; there is no such requirement
• D. Revocation of the station license or suspension of the operator license

T1E02

14. Who may be the control operator of a station communicating through an amateur satellite or space station?

• A. A General class or higher licensee with a satellite operator certification
• B. Any amateur allowed to transmit on the satellite uplink frequency
• C. Only an Amateur Extra Class operator who is also an AMSAT member
• D. Only an Amateur Extra Class operator

T9B05

15. What happens as the frequency of a signal in coaxial cable is increased?

• A. The loss decreases
• B. The characteristic impedance decreases
• C. The characteristic impedance increases
• D. The loss increases

T6B02

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

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

T6C12

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

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

T9A01

18. What is a beam antenna?

• A. An antenna that concentrates signals in one direction
• B. An antenna built from aluminum I-beams
• C. An antenna that reverses the phase of received signals
• D. An omnidirectional antenna invented by Clarence Beam

T0B06

19. What is the minimum safe distance from a power line to allow when installing an antenna?

• A. Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
• B. Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
• C. The height of the power line above ground
• D. 1/2 wavelength at the operating frequency

T3A01

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

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

T8A07

21. What is a characteristic of single sideband (SSB) compared to FM?

• A. All these choices are correct
• B. SSB signals have narrower bandwidth
• C. SSB signals are easier to tune in correctly
• D. SSB signals are less susceptible to interference

T8B02

22. What is the impact of using excessive effective radiated power on a satellite uplink?

• A. Possibility of commanding the satellite to an improper mode
• B. Blocking access by other users
• C. Possibility of rebooting the satellite control computer
• D. Overloading the satellite batteries

T6D01

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

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

T0A11

24. What hazard exists in a power supply immediately after turning it off?

• A. Circulating currents in the dc filter
• B. Charge stored in filter capacitors
• C. Leakage flux in the power transformer
• D. Voltage transients from kickback diodes

T8C07

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

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

T8D04

26. What type of transmission is indicated by the term "NTSC?"

• A. An analog fast-scan color TV signal
• B. A Normal Transmission mode in Static Circuit
• C. A frame compression scheme for TV signals
• D. A special mode for satellite uplink

T3B04

27. What is the velocity of a radio wave traveling through free space?

• A. Speed inversely proportional to its wavelength
• B. Speed of light
• C. Speed that increases as the frequency increases
• D. Speed of sound

T3C03

28. What is a characteristic of VHF signals received via auroral backscatter?

• A. They are distorted and signal strength varies considerably
• B. They occur only during winter nighttime hours
• C. They are often received from 10,000 miles or more
• D. They are generally strongest when your antenna is aimed west

T7D03

29. When configured to measure current, how is a multimeter connected to a component?

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

T1D05

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

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

T5C06

31. What does the abbreviation "RF" mean?

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

T1F08

32. What is the definition of third party communications?

• A. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
• B. Operation when the transmitting equipment is licensed to a person other than the control operator
• C. Amateur radio communications where three stations are in communications with one another
• D. A message from a control operator to another amateur station control operator on behalf of another person

T7B05

33. How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

• A. Block the amateur signal with a filter at the antenna input of the affected receiver
• B. Switch the transmitter from FM to SSB
• C. Block the interfering signal with a filter on the amateur transmitter
• D. Switch the transmitter to a narrow-band mode

T5D06

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

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

T6A04

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

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