Practice Exam

T2C05

1. What does the term "traffic" refer to in net operation?

• A. Messages exchanged by net stations
• B. The number of stations checking in and out of a net
• C. Requests to activate the net by a served agency
• D. Operation by mobile or portable stations

T3B03

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

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

T0C11

3. What is the definition of duty cycle during the averaging time for RF exposure?

• A. The difference between the lowest power output and the highest power output of a transmitter
• B. The percentage of time that a transmitter is transmitting
• C. The difference between the PEP and average power output of a transmitter
• D. The percentage of time that a transmitter is not transmitting

T0A11

4. 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

T5D11

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

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

T7C06

6. What does an SWR reading of 4:1 indicate?

• A. Loss of -4 dB
• B. Impedance mismatch
• C. Good impedance match
• D. Gain of +4 dB

T3A03

7. What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?

• A. Vertical
• B. Right-hand circular
• C. Left-hand circular
• D. Horizontal

T8B06

8. Which of the following are inputs to a satellite tracking program?

• A. All these choices are correct
• B. The satellite transmitted power
• C. The last observed time of zero Doppler shift
• D. The Keplerian elements

T1B08

9. 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. International communications are not permitted in those segments
• C. Digital transmissions are not permitted in those segments
• D. U.S. amateurs must give foreign amateur stations priority in those segments

T1C04

10. 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. Revocation of the station license or suspension of the operator license
• D. Nothing; there is no such requirement

T1A10

11. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. A radio service using amateur frequencies for emergency management or civil defense communications
• B. All these choices are correct
• C. A radio service using amateur stations for emergency management or civil defense communications
• D. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization

T8A06

12. Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

• A. Suppressed sideband
• B. Upper sideband
• C. Lower sideband
• D. Inverted sideband

T1D07

13. What types of amateur stations can automatically retransmit the signals of other amateur stations?

• A. Beacon, repeater, or space stations
• B. Auxiliary, beacon, or Earth stations
• C. Earth, repeater, or space stations
• D. Repeater, auxiliary, or space stations

T0B10

14. Which of the following is true when installing grounding conductors used for lightning protection?

• A. Use only non-insulated wire
• B. Common grounds must be avoided
• C. Sharp bends must be avoided
• D. Wires must be carefully routed with precise right-angle bends

T2A06

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

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

T7A03

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

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

T2B11

17. Which Q signal indicates that you are changing frequency?

• A. QRU
• B. QSL
• C. QSY
• D. QRZ

T6A06

18. What type of electrical component stores energy in a magnetic field?

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

T8D02

19. What is a "talkgroup" on a DMR repeater?

• A. A group of operators sharing common interests
• B. A net that meets at a specified time
• C. A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
• D. A way for groups of users to share a channel at different times without hearing other users on the channel

T6B11

20. What is the term that describes a device's ability to amplify a signal?

• A. Forward voltage drop
• B. Forward resistance
• C. Gain
• D. On resistance

T7B05

21. 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 to a narrow-band mode
• C. Switch the transmitter from FM to SSB
• D. Block the interfering signal with a filter on the amateur transmitter

T4B01

22. What is the effect of excessive microphone gain on SSB transmissions?

• A. Distorted transmitted audio
• B. All these choices are correct
• C. Frequency instability
• D. Increased SWR

T6C04

23. What is component 3 in figure T-1?

• A. Lamp
• B. Transistor
• C. Resistor
• D. Ground symbol

T9B07

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

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

T1E02

25. 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
• D. Only an Amateur Extra Class operator who is also an AMSAT member

T6D05

26. What type of circuit controls the amount of voltage from a power supply?

• A. Regulator
• B. Oscillator
• C. Filter
• D. Phase inverter

T5B08

27. Which is equal to 1,000,000 picofarads?

• A. 1000 microfarads
• B. 0.001 microfarads
• C. 1,000,000,000 microfarads
• D. 1 microfarad

T5A03

28. What is the name for the flow of electrons in an electric circuit?

• A. Voltage
• B. Resistance
• C. Capacitance
• D. Current

T1F07

29. Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

• A. All these choices are correct
• B. The foreign station must be in a country with which the U.S. has a third party agreement
• C. The licensed control operator must do the station identification
• D. The person must be a U.S. citizen

T8C09

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

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

T5C12

31. What is impedance?

• A. The opposition to AC current flow
• B. The power handling capability of a component
• C. The inverse of resistance
• D. The Q or Quality Factor of a component

T4A08

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

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

T7D02

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

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

T9A08

34. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 50
• B. 12
• C. 112
• D. 19

T3C05

35. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

• A. Faraday rotation
• B. Doppler shift
• C. Knife-edge diffraction
• D. Quantum tunneling