Practice Exam

T7C08

1. Which instrument can be used to determine SWR?

• A. Iambic pentameter
• B. Voltmeter
• C. Ohmmeter
• D. Directional wattmeter

T6C10

2. What is component 3 in figure T-3?

• A. Variable capacitor
• B. Meter
• C. Variable inductor
• D. Connector

T3A08

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

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

T2B07

4. How can you join a digital repeater's "talkgroup"?

• A. Join the repeater owner's club
• B. Register your radio with the local FCC office
• C. Program your radio with the group's ID or code
• D. Sign your call after the courtesy tone

T6D06

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

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

T5B08

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

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

T8C02

7. Which of these items would be useful for a hidden transmitter hunt?

• A. Calibrated SWR meter
• B. All these choices are correct
• C. A directional antenna
• D. A calibrated noise bridge

T5A12

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

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

T8A02

9. What type of modulation is commonly used for VHF packet radio transmissions?

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

T1F10

10. Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

• A. The owner of the repeater
• B. The control operator of the repeater
• C. Both the originating station and the repeater owner
• D. The control operator of the originating station

T6B02

11. What electronic component allows current to flow in only one direction?

• A. Resistor
• B. Driven element
• C. Fuse
• D. Diode

T9A11

12. What is antenna gain?

• A. The additional power that is added to the transmitter power
• B. The increase in impedance on receive or transmit compared to a reference antenna
• C. The additional power that is required in the antenna when transmitting on a higher frequency
• D. The increase in signal strength in a specified direction compared to a reference antenna

T4A02

13. Which of the following should be considered when selecting an accessory SWR meter?

• A. All these choices are correct
• B. The types of modulation being used at the station
• C. The frequency and power level at which the measurements will be made
• D. The distance that the meter will be located from the antenna

T7B07

14. Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

• A. Using double-shielded coaxial cable
• B. Installing an RF preamplifier
• C. Installing bypass capacitors on the microphone cable
• D. Installing a band-reject filter

T9B08

15. Which of the following is a source of loss in coaxial feed line?

• A. Water intrusion into coaxial connectors
• B. Multiple connectors in the line
• C. All these choices are correct
• D. High SWR

T7A11

16. Where is an RF preamplifier installed?

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

T3B11

17. What is the approximate velocity of a radio wave in free space?

• A. 150,000 meters per second
• B. 150,000 miles per hour
• C. 300,000,000 meters per second
• D. 300,000,000 miles per hour

T1E04

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

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

T2A03

19. What is a common repeater frequency offset in the 70 cm band?

• A. Plus or minus 600 kHz
• B. Plus or minus 500 kHz
• C. Plus or minus 5 MHz
• D. Plus or minus 1 MHz

T8D03

20. What kind of data can be transmitted by APRS?

• A. GPS position data
• B. Weather data
• C. Text messages
• D. All these choices are correct

T6A06

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

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

T5C01

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

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

T0C01

23. What type of radiation are radio signals?

• A. Ionizing radiation
• B. Non-ionizing radiation
• C. Alpha radiation
• D. Gamma radiation

T0A04

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

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

T7D02

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

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

T1D03

26. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Only when transmitting control commands to space stations or radio control craft
• B. Only during contests
• C. Never
• D. Only when transmitting certain approved digital codes

T2C07

27. Which of the following is standard practice when you participate in a net?

• A. When first responding to the net control station, transmit your call sign, name, and address as in the FCC database
• B. Record the time of each of your transmissions
• C. All these choices are correct
• D. Unless you are reporting an emergency, transmit only when directed by the net control station

T1B05

28. How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

• A. Spread spectrum only
• B. Emergency traffic only
• C. Fixed digital message forwarding systems only
• D. Fast-scan television only

T1A10

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

• A. All these choices are correct
• B. A radio service using amateur frequencies for emergency management or civil defense communications
• 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

T5D14

30. In which type of circuit is voltage the same across all components?

• A. Resonant
• B. Series
• C. Branch
• D. Parallel

T4B07

31. What does a DMR "code plug" contain?

• A. The codec for digitizing audio
• B. Your call sign in CW for automatic identification
• C. The DMR software version
• D. Access information for repeaters and talkgroups

T3C02

32. 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. HF accommodates wider bandwidth signals
• C. There is less atmospheric interference (static) on HF
• D. HF antennas are generally smaller

T0B05

33. What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. Prevent loosening of the turnbuckle from vibration
• B. Secure the guy line if the turnbuckle breaks
• C. Provide a ground path for lightning strikes
• D. Provide an ability to measure for proper tensioning

T1C04

34. What may happen if the FCC is unable to reach you by email?

• A. Fine and suspension of operator license
• B. Revocation of the station license or suspension of the operator license
• C. Revocation of access to the license record in the FCC system
• D. Nothing; there is no such requirement

T8B12

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

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