Practice Exam

T3C05

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

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

T7D08

2. Which of the following types of solder should not be used for radio and electronic applications?

• A. Tin-copper solder
• B. Lead-tin solder
• C. Acid-core solder
• D. Rosin-core solder

T4A04

3. How are the transceiver audio input and output connected in a station configured to operate using FT8?

• A. To a computer connected to the FT8converter.com website
• B. To the audio input and output of a computer running WSJT-X software
• C. To a computer running a terminal program and connected to a terminal node controller unit
• D. To an FT8 conversion unit, a keyboard, and a computer monitor

T5D09

4. What is the current through a 24-ohm resistor connected across 240 volts?

• A. 216 amperes
• B. 10 amperes
• C. 0.1 amperes
• D. 24,000 amperes

T6C06

5. What is component 6 in figure T-2?

• A. Regulator IC
• B. Resistor
• C. Transistor
• D. Capacitor

T7C02

6. Which of the following is used to determine if an antenna is resonant at the desired operating frequency?

• A. A Q meter
• B. A frequency counter
• C. A VTVM
• D. An antenna analyzer

T8A01

7. Which of the following is a form of amplitude modulation?

• A. Single sideband
• B. Spread spectrum
• C. Phase shift keying (PSK)
• D. Packet radio

T0C05

8. Why do exposure limits vary with frequency?

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

T5B08

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

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

T3B06

10. What is the formula for converting frequency to approximate wavelength in meters?

• A. Wavelength in meters equals frequency in hertz multiplied by 300
• B. Wavelength in meters equals frequency in hertz divided by 300
• C. Wavelength in meters equals frequency in megahertz divided by 300
• D. Wavelength in meters equals 300 divided by frequency in megahertz

T7B03

11. Which of the following can cause radio frequency interference?

• A. Fundamental overload
• B. Harmonics
• C. All these choices are correct
• D. Spurious emissions

T5C12

12. What is impedance?

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

T6B07

13. What causes a light-emitting diode (LED) to emit light?

• A. Reverse current
• B. Inductively-coupled RF signal
• C. Capacitively-coupled RF signal
• D. Forward current

T5A07

14. Why are metals generally good conductors of electricity?

• A. All these choices are correct
• B. They have many free protons
• C. They have relatively high density
• D. They have many free electrons

T1B02

15. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a General class or higher license who has applied for and received approval from NASA
• B. Any amateur holding a General class or higher license
• C. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
• D. Any amateur holding a Technician class or higher license

T1A04

16. How many operator/primary station license grants may be held by any one person?

• A. One for each band on which the person plans to operate
• B. One for each permanent station location from which the person plans to operate
• C. One
• D. No more than two

T8B02

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

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

T1F09

18. What type of amateur station simultaneously retransmits the signal of another amateur station on a different channel or channels?

• A. Message forwarding station
• B. Repeater station
• C. Beacon station
• D. Earth station

T0B10

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

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

T3A09

20. Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

• A. Either vertically or horizontally polarized antennas may be used for transmission or reception
• B. FM voice is unusable
• C. Digital modes are unusable
• D. Both the transmitting and receiving antennas must be of the same polarization

T2C11

21. What is meant by "check" in a radiogram header?

• A. The number of words or word equivalents in the text portion of the message
• B. The call sign of the originating station
• C. A list of stations that have relayed the message
• D. A box on the message form that indicates that the message was received and/or relayed

T6D06

22. What component changes 120 V AC power to a lower AC voltage for other uses?

• A. Variable capacitor
• B. Transformer
• C. Transistor
• D. Diode

T1C06

23. From which of the following locations may an FCC-licensed amateur station transmit?

• A. From any vessel or craft located in international waters and documented or registered in the United States
• B. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• C. From within any country that belongs to the International Telecommunication Union
• D. From within any country that is a member of the United Nations

T8C01

24. Which of the following methods is used to locate sources of noise interference or jamming?

• A. Echolocation
• B. Phase locking
• C. Radio direction finding
• D. Doppler radar

T7A11

25. Where is an RF preamplifier installed?

• A. Between the transmitter and the antenna tuner
• B. At the output of the transmitter power amplifier
• C. Between the antenna and receiver
• D. At the output of the receiver audio amplifier

T4B10

26. Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

• A. 500 Hz
• B. 1000 Hz
• C. 5000 Hz
• D. 2400 Hz

T9A01

27. What is a beam antenna?

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

T0A12

28. Which of the following precautions should be taken when measuring high voltages with a voltmeter?

• A. Ensure that the circuit is grounded through the voltmeter
• B. Ensure that the voltmeter and leads are rated for use at the voltages to be measured
• C. Ensure that the voltmeter has very low impedance
• D. Ensure that the voltmeter is set to the correct frequency

T1E03

29. Who must designate the station control operator?

• A. Any licensed operator
• B. The station licensee
• C. The FCC
• D. The frequency coordinator

T9B07

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

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

T2A11

31. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Full duplex
• B. Diplex
• C. Simplex
• D. Multiplex

T1D08

32. In which of the following circumstances may the control operator of an amateur station receive compensation for operating that station?

• A. When the communication is related to the sale of amateur equipment by the control operator's employer
• B. When the communication is made to obtain emergency information for a local broadcast station
• C. When the communication is incidental to classroom instruction at an educational institution
• D. All these choices are correct

T6A12

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

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

T8D09

34. What is CW?

• A. Another name for a Morse code transmission
• B. A digital mode used primarily on 2 meter FM
• C. A type of electromagnetic propagation
• D. A technique for coil winding

T2B03

35. Which of the following describes a linked repeater network?

• A. A single repeater with more than one receiver
• B. Multiple repeaters with the same control operator
• C. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network
• D. A system of repeaters linked by APRS