Practice Exam

T9B04

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

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

T6B09

2. What are the names for the electrodes of a diode?

• A. Anode and cathode
• B. Source and drain
• C. Gate and base
• D. Plus and minus

T7B08

3. What should you do if something in a neighbor's home is causing harmful interference to your amateur station?

• A. Work with your neighbor to identify the offending device
• B. Make sure your station meets the standards of good amateur practice
• C. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference
• D. All these choices are correct

T0C13

4. Who is responsible for ensuring that no person is exposed to RF energy above the FCC exposure limits?

• A. The station licensee
• B. The FCC
• C. Anyone who is near an antenna
• D. The local zoning board

T2C09

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

T8B12

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

• A. Check your signal strength report in the telemetry data
• B. All these choices are correct
• C. Listen for distortion on your downlink signal
• D. Your signal strength on the downlink should be about the same as the beacon

T5D09

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

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

T7D02

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

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

T3A08

9. What is a likely cause of irregular fading of signals propagated by the ionosphere?

• A. Frequency shift due to Faraday rotation
• B. Intermodulation distortion
• C. Interference from thunderstorms
• D. Random combining of signals arriving via different paths

T7A08

10. Which of the following describes combining speech with an RF carrier signal?

• A. Oscillation
• B. Modulation
• C. Impedance matching
• D. Low-pass filtering

T0B08

11. Which is a proper grounding method for a tower?

• A. A ferrite-core RF choke connected between the tower and ground
• B. A connection between the tower base and a cold water pipe
• C. A single four-foot ground rod, driven into the ground no more than 12 inches from the base
• D. Separate eight-foot ground rods for each tower leg, bonded to the tower and each other

T1C06

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

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

T1F02

13. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. At the end of every transmission
• B. Once during every hour
• C. Never, the tactical call is sufficient
• D. At the end of each communication and every ten minutes during a communication

T4B03

14. How is squelch adjusted so that a weak FM signal can be heard?

• A. Set the squelch threshold so that receiver output audio is on all the time
• B. Turn on the anti-squelch function
• C. Enable squelch enhancement
• D. Turn up the audio level until it overcomes the squelch threshold

T1A04

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

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

T1D07

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

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

T0A11

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

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

T4A05

18. Where should an RF power meter be installed?

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

T2B05

19. What would cause your FM transmission audio to be distorted on voice peaks?

• A. Your transmit power is too high
• B. Your repeater offset is inverted
• C. You are talking too loudly
• D. You need to talk louder

T6D06

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

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

T9A04

21. What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

• A. All these choices are correct
• B. It transmits only circularly polarized signals
• C. It is mechanically fragile
• D. It has low efficiency

T7C06

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

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

T3C02

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

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

T8C10

24. What is required before using the EchoLink system?

• A. Register your call sign and provide proof of license
• B. Complete the required EchoLink training
• C. Purchase a license to use the EchoLink software
• D. All these choices are correct

T1E02

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

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

T8A03

26. Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

• A. FM
• B. SSB
• C. PM
• D. DRM

T6C11

27. What is component 4 in figure T-3?

• A. Antenna
• B. Dummy load
• C. Ground
• D. Transmitter

T5B05

28. Which is equal to 500 milliwatts?

• A. 0.02 watts
• B. 0.5 watts
• C. 5 watts
• D. 50 watts

T5A12

29. What describes the number of times per second that an alternating current makes a complete cycle?

• A. Pulse rate
• B. Frequency
• C. Speed
• D. Wavelength

T2A12

30. What should you do before calling CQ?

• A. Listen first to be sure that no one else is using the frequency
• B. All these choices are correct
• C. Make sure you are authorized to use that frequency
• D. Ask if the frequency is in use

T1B02

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

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

T5C06

32. What does the abbreviation "RF" mean?

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

T3B07

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

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

T8D02

34. 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

T6A03

35. What electrical parameter is controlled by a potentiometer?

• A. Resistance
• B. Field strength
• C. Capacitance
• D. Inductance