Practice Exam

T5B04

1. Which is equal to one microvolt?

• A. One one-millionth of a volt
• B. One million volts
• C. One thousand kilovolts
• D. One one-thousandth of a volt

T9B09

2. What can cause erratic changes in SWR?

• A. Overload from a strong local station
• B. Over-modulation
• C. Local thunderstorm
• D. Loose connection in the antenna or feed line

T8B09

3. What causes spin fading of satellite signals?

• A. Interfering signals within the satellite uplink band
• B. Rotation of the satellite and its antennas
• C. Doppler shift of the received signal
• D. Circular polarized noise interference radiated from the sun

T0B01

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

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

T8D02

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

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

T6B11

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

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

T6A04

7. What electrical component stores energy in an electric field?

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

T2B12

8. What is the purpose of the color code used on DMR repeater systems?

• A. Defines the minimum signal level required for access
• B. Defines the frequency pair to use
• C. Identifies the codec used
• D. Must match the repeater color code for access

T6C10

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

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

T5D03

10. What formula is used to calculate resistance in a circuit?

• A. R = E x I
• B. R = E + I
• C. R = E - I
• D. R = E / I

T7A03

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

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

T8A01

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

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

T1D11

13. When may an amateur station transmit without identifying on the air?

• A. When the transmissions are of a brief nature to make station adjustments
• B. When the transmissions are unmodulated
• C. When the transmitted power level is below 1 watt
• D. When transmitting signals to control model craft

T1B02

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

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

T2C08

15. Which of the following is a characteristic of good traffic handling?

• A. Ensuring that any newsworthy messages are relayed to the news media
• B. All these choices are correct
• C. Passing messages exactly as received
• D. Making decisions as to whether messages are worthy of relay or delivery

T7C07

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

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

T8C10

17. What is required before using the EchoLink system?

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

T2A10

18. What is a band plan, beyond the privileges established by the FCC?

• A. A plan devised by a club to indicate frequency band usage
• B. A list of available net frequencies
• C. A list of operating schedules
• D. A voluntary guideline for using different modes or activities within an amateur band

T4A08

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

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

T3A05

20. When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

• A. Change from vertical to horizontal polarization
• B. Try to find a path that reflects signals to the repeater
• C. Try the long path
• D. Increase the antenna SWR

T3B09

21. What frequency range is referred to as UHF?

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

T7D03

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

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

T9A03

23. Which of the following describes a simple dipole oriented parallel to Earth's surface?

• A. A vertically polarized antenna
• B. A horizontally polarized antenna
• C. A travelling-wave antenna
• D. A ground-wave antenna

T0A03

24. In the United States, what circuit does black wire insulation indicate in a three-wire 120 V cable?

• A. Equipment ground
• B. Neutral
• C. Black insulation is never used
• D. Hot

T7B04

25. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Low-pass filter
• B. Band-pass filter
• C. Ferrite choke
• D. Preamplifier

T0C12

26. How does RF radiation differ from ionizing radiation (radioactivity)?

• A. RF radiation is perfectly safe
• B. RF radiation is limited in range to a few feet
• C. RF radiation can only be detected with an RF dosimeter
• D. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA

T4B06

27. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The AGC or limiter
• B. The RIT or Clarifier
• C. The bandwidth selection
• D. The tone squelch

T1A10

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

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

T1E05

29. What is an amateur station's control point?

• A. The location at which the control operator function is performed
• B. The mailing address of the station licensee
• C. The location of the station's transmitting antenna
• D. The location of the station's transmitting apparatus

T1C02

30. Who may select a desired call sign under the vanity call sign rules?

• A. Any licensed amateur
• B. Only a licensed amateur with an Amateur Extra Class license
• C. Only a licensed amateur with a General or Amateur Extra Class license
• D. Only a licensed amateur who has been licensed continuously for more than 10 years

T5A08

31. Which of the following is a good electrical insulator?

• A. Mercury
• B. Aluminum
• C. Glass
• D. Copper

T6D11

32. Which of the following is a resonant or tuned circuit?

• A. A circuit designed to provide high-fidelity audio
• B. A resistor circuit used for reducing standing wave ratio
• C. A linear voltage regulator
• D. An inductor and a capacitor in series or parallel

T1F07

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

T5C12

34. What is impedance?

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

T3C03

35. What is a characteristic of VHF signals received via auroral backscatter?

• A. They are often received from 10,000 miles or more
• B. They are generally strongest when your antenna is aimed west
• C. They occur only during winter nighttime hours
• D. They are distorted and signal strength varies considerably