Practice Exam

T5D06

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

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

T3B07

2. In addition to frequency, which of the following is used to identify amateur radio bands?

• A. The approximate wavelength in meters
• B. All these choices are correct
• C. Traditional letter/number designators
• D. Channel numbers

T3C01

3. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. FCC regulations prohibit them from going more than 50 miles
• B. UHF signals are absorbed by the ionospheric D region
• C. UHF signals are usually not propagated by the ionosphere
• D. They are too weak to go very far

T5B01

4. How many milliamperes is 1.5 amperes?

• A. 15,000 milliamperes
• B. 1500 milliamperes
• C. 15 milliamperes
• D. 150 milliamperes

T6B06

5. 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 word "cathode"
• D. With the letter C

T8D12

6. Which of the following best describes an amateur radio mesh network?

• A. An amateur-radio based data network using commercial Wi-Fi equipment with modified firmware
• B. A satellite communications network using modified commercial satellite TV hardware
• C. An internet linking protocol used to network repeaters
• D. A wide-bandwidth digital voice mode employing DMR protocols

T4B11

7. Which of the following must be programmed into a D-STAR digital transceiver before transmitting?

• A. Your call sign
• B. The codec type being used
• C. Your output power
• D. All these choices are correct

T8C07

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

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

T7C10

9. Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

• A. Ultraviolet resistant jackets prevent harmonic radiation
• B. Ultraviolet and RF signals can mix, causing interference
• C. Ultraviolet light can damage the jacket and allow water to enter the cable
• D. Ultraviolet light can increase losses in the cable's jacket

T0B03

10. Under what circumstances is it safe to climb a tower without a helper or observer?

• A. Never
• B. When no mechanical work is being performed
• C. When the work being done is not more than 20 feet above the ground
• D. When no electrical work is being performed

T0A05

11. Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

• A. The larger fuse would be likely to blow because it is rated for higher current
• B. The power supply ripple would greatly increase
• C. Excessive current could cause a fire
• D. All these choices are correct

T1A02

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

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

T2A08

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

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

T4A05

14. Where should an RF power meter be installed?

• A. At the power supply output
• B. In the feed line, between the transmitter and antenna
• C. In the power supply cable, as close as possible to the radio
• D. In parallel with the push-to-talk line and the antenna

T2B02

15. What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

• A. CTCSS
• B. Carrier squelch
• C. Tone burst
• D. DTMF

T9B04

16. What is the major function of an antenna tuner (antenna coupler)?

• A. It matches the antenna system impedance to the transceiver's output impedance
• B. It helps a receiver automatically tune in weak stations
• C. It allows an antenna to be used on both transmit and receive
• D. It automatically selects the proper antenna for the frequency band being used

T3A06

17. What is the meaning of the term "picket fencing"?

• A. A type of ground system used with vertical antennas
• B. Alternating transmissions during a net operation
• C. Rapid flutter on mobile signals due to multipath propagation
• D. Local vs long-distance communications

T1C11

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

T8A04

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

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

T2C06

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

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

T9A03

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

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

T8B02

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

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

T1F08

23. What is the definition of third party communications?

• A. Operation when the transmitting equipment is licensed to a person other than the control operator
• B. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
• 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

T1E11

24. Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records?

• A. The third party participant
• B. The person operating the station equipment
• C. The station licensee
• D. The station custodian

T6A12

25. What type of switch is represented by component 3 in figure T-2?

• A. Single-pole single-throw
• B. Single-pole double-throw
• C. Double-pole single-throw
• D. Double-pole double-throw

T1D06

26. What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

• A. The FCC maintains a list of words that are not permitted to be used on amateur frequencies
• B. Any such language is prohibited
• C. There is no such prohibition
• D. The ITU maintains a list of words that are not permitted to be used on amateur frequencies

T5A06

27. What is the unit of frequency?

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

T7B09

28. What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

• A. Add a low-pass filter to the TV antenna input
• B. Add a preamplifier to the TV antenna input
• C. Add a high-pass filter to the TV antenna input
• D. Be sure all TV feed line coaxial connectors are installed properly

T0C10

29. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It affects the peak exposure to radiation
• B. It takes into account the antenna feed line loss
• C. It takes into account the thermal effects of the final amplifier
• D. It affects the average exposure to radiation

T7A03

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

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

T7D03

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

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

T6C09

32. What is component 4 in figure T-2?

• A. Transformer
• B. Potentiometer
• C. Variable inductor
• D. Double-pole switch

T1B08

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

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

T6D03

34. Which of the following is a reason to use shielded wire?

• A. To decrease the resistance of DC power connections
• B. To increase the current carrying capability of the wire
• C. To couple the wire to other signals
• D. To prevent coupling of unwanted signals to or from the wire

T5C03

35. What describes the ability to store energy in a magnetic field?

• A. Capacitance
• B. Inductance
• C. Admittance
• D. Resistance