Practice Exam

T4B09

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

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

T9B07

2. Which of the following is true of PL-259 type coax connectors?

• A. They are preferred for microwave operation
• B. They are watertight
• C. They are a bayonet-type connector
• D. They are commonly used at HF and VHF frequencies

T1D06

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

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

T2B12

4. What is the digital color code used on DMR repeater systems?

• A. A code which identifies the specific CODEC being used so that the repeater can properly decode the audio
• B. A code which automatically programs the repeater offset to a frequency chosen by the user
• C. An access code which must be programmed into a DMR transmitter to access a specific repeater
• D. A code transmitted by the repeater to indicate health and status of the equipment

T0B01

5. Which of the following is good practice when installing ground wires on a tower for lightning protection?

• A. Make sure all ground wire bends are right angles
• B. Put a drip loop in the ground connection to prevent water damage to the ground system
• C. Ensure that connections are short and direct
• D. All these choices are correct

T6D08

6. Which of the following is combined with an inductor to make a resonant circuit?

• A. Resistor
• B. Capacitor
• C. Zener diode
• D. Potentiometer

T6A08

7. What is the function of an SPDT switch?

• A. A single circuit is opened or closed
• B. Two circuits are each switched between one of two other circuits
• C. A single circuit is switched between one of two other circuits
• D. Two circuits are opened or closed

T3A01

8. 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 Doppler effect causes slight frequency shifts which result in changes in signal strength
• C. Multipath propagation cancels or reinforces signals
• D. The signal path encounters different concentrations of water vapor

T0C04

9. What factors affect the RF exposure of people near an amateur station antenna?

• A. Frequency and power level of the RF field
• B. Distance from the antenna to a person
• C. Radiation pattern of the antenna
• D. All these choices are correct

T1F08

10. 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. A message from a control operator to another amateur station control operator on behalf of another person
• C. Operation when the transmitting equipment is licensed to a person other than the control operator
• D. Amateur radio communications where three stations are in communications with one another

T2C04

11. What is RACES?

• A. An international radio experimentation society
• B. An FCC Part 97 amateur radio service for civil defense communications during national emergencies
• C. A radio contest held in a short period, sometimes called a "sprint"
• D. An emergency organization combining amateur radio and citizens band operators and frequencies

T7D03

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

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

T5A03

13. What is the term for the flow of electrons in an electric circuit?

• A. Amperes per second
• B. Current
• C. Voltage
• D. Volts per second

T1E04

14. What determines the transmitting frequency privileges of an amateur station?

• A. The class of operator license held by the control operator
• B. The highest class of operator license held by anyone on the premises
• C. The frequencies printed on the license grant
• D. The frequency authorized by the frequency coordinator

T4A12

15. What is an electronic keyer?

• A. A device for switching antennas from transmit to receive
• B. A device for voice activated switching from receive to transmit
• C. An interlock to prevent unauthorized use of a radio
• D. A device that assists in manual sending of Morse code

T8D12

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

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

T7C07

17. What happens to power lost in a feed line?

• A. It distorts the signal
• B. It is converted into heat
• C. It is radiated as harmonics
• D. It increases the SWR

T2A06

18. What is an effective way to seek a call from any phone station when not using a repeater?

• A. Transmit an unmodulated carrier for approximately 10 seconds, followed by "this is" and your call sign, and pause to listen; repeat as necessary
• B. Say "QTC," followed by "this is" and your call sign; if there is no answer, change the frequency and repeat
• C. Sign your call sign once, followed by the words "listening for a call;" if there is no answer, change the frequency and repeat
• D. Repeat "CQ" a few times, followed by "this is," and your call sign, then pause to listen; repeat as necessary

T8C08

19. What is the Internet Radio Linking Project (IRLP)?

• A. A system for providing access to websites via amateur radio
• B. A technique to connect amateur radio systems, such as repeaters, via the internet
• C. A technique for measuring signal strength of an amateur transmitter via the internet
• D. A system for informing amateurs in real time of the frequency of active DX stations

T3C02

20. What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

• A. Long-distance ionospheric propagation is far more common on HF
• B. There is less atmospheric interference (static) on HF
• C. HF accommodates wider bandwidth signals
• D. HF antennas are generally smaller

T1B08

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

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

T8B12

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

• A. Listen for distortion on your downlink signal
• B. Your signal strength on the downlink should be about the same as the beacon
• C. Compare your signal to others on the downlink using an internet SDR receiver
• D. Check your signal strength report in the telemetry data

T5B05

23. Which is equal to 500 milliwatts?

• A. 0.5 watts
• B. 500,000 watts
• C. 5 watts
• D. 500,000,000 watts

T1A10

24. Besides an FCC-issued amateur operator license, what is required to be the control operator of a Radio Amateur Civil Emergency Service (RACES) Station?

• A. Membership in the Amateur Radio Emergency Service (ARES)
• B. A written recommendation by the local ARRL Emergency Coordinator
• C. Nothing
• D. Certification of current enrollment by a civil defense organization

T5D05

25. What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

• A. 0.125 ohms
• B. 13.5 ohms
• C. 18 ohms
• D. 8 ohms

T7A06

26. What device converts the RF input and output of a transceiver to another band?

• A. Phase converter
• B. Low-pass filter
• C. Transverter
• D. High-pass filter

T3B09

27. What frequency range is referred to as UHF?

• A. 300 to 3000 MHz
• B. 30 to 300 kHz
• C. 30 to 300 MHz
• D. 300 to 3000 kHz

T9A08

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

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

T6B04

29. Which of the following components can consist of three regions of semiconductor material?

• A. Transistor
• B. Alternator
• C. Pentode
• D. Triode

T7B04

30. Which of the following might be the cause of low RF power output from a solid-state transceiver?

• A. Poor amplifier linearity
• B. High SWR
• C. Low SWR
• D. Poor amplifier noise figure

T1C10

31. How soon after passing the examination for your first amateur radio license may you transmit on the amateur radio bands?

• A. As soon as your operator/station license grant appears in the FCC's license database
• B. Immediately on receiving your Certificate of Successful Completion of Examination (CSCE)
• C. As soon as your operator/station license grant appears on the ARRL website
• D. As soon as you receive your license in the mail from the FCC

T6C09

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

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

T5C01

33. What describes the ability to store energy in an electric field?

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

T8A08

34. What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• A. 15 kHz
• B. 6 kHz
• C. 3 kHz
• D. 1 kHz

T0A04

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

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