Practice Exam

T9B11

1. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. Multi-conductor unbalanced cable
• B. 50-ohm flexible coax
• C. Air-insulated hardline
• D. 75-ohm flexible coax

T3C11

2. Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

• A. The atmosphere refracts radio waves slightly
• B. Radio waves are not blocked by dust particles
• C. Radio waves are blocked by dust particles
• D. Radio signals move somewhat faster than the speed of light

T6D02

3. What is a relay?

• A. An electrically-controlled switch
• B. An inverting amplifier
• C. A pass transistor
• D. A current controlled amplifier

T2B05

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

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

T6C05

5. What is component 4 in figure T-1?

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

T5A12

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

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

T5C04

7. What is the unit of inductance?

• A. The henry
• B. The farad
• C. The ohm
• D. The coulomb

T0B05

8. 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. Provide an ability to measure for proper tensioning
• C. Secure the guy line if the turnbuckle breaks
• D. Provide a ground path for lightning strikes

T1F02

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

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

T6A07

10. What electrical component is typically constructed as a coil of wire?

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

T5D07

11. What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

• A. 1.5 amperes
• B. 0.667 amperes
• C. 9600 amperes
• D. 200 amperes

T1B05

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

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

T5B04

13. Which is equal to one microvolt?

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

T0C09

14. How can you make sure your station stays in compliance with RF safety regulations?

• A. All these choices are correct
• B. By informing the FCC of any changes made in your station
• C. By re-evaluating the station whenever an item in the transmitter or antenna system is changed
• D. By making sure your antennas have low SWR

T2A06

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

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

T8B06

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

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

T7A04

17. Which term describes the ability of a receiver to discriminate between multiple signals?

• A. Discrimination ratio
• B. Harmonic distortion
• C. Selectivity
• D. Sensitivity

T8A03

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

• A. PM
• B. DRM
• C. FM
• D. SSB

T7B07

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

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

T1E08

20. Which of the following is an example of automatic control?

• A. Controlling a station over the internet
• B. Using a computer or other device to send CW automatically
• C. Using a computer or other device to identify automatically
• D. Repeater operation

T7D06

21. Which of the following can damage a multimeter?

• A. Attempting to measure voltage when using the resistance setting
• B. Attempting to measure resistance using the voltage setting
• C. Not allowing it to warm up properly
• D. Failing to connect one of the probes to ground

T1D03

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

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

T1A05

23. What proves that the FCC has issued an operator/primary license grant?

• A. A printed copy of the certificate of successful completion of examination
• B. An email notification from the NCVEC granting the license
• C. All these choices are correct
• D. The license appears in the FCC ULS database

T8D02

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

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

T1C03

25. What types of international communications are an FCC-licensed amateur radio station permitted to make?

• A. Any communications that would be permitted by an international broadcast station
• B. Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
• C. Communications incidental to conducting business or remarks of a personal nature
• D. Only communications incidental to contest exchanges; all other communications are prohibited

T3B06

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

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

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

T2C07

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

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

T6B09

29. 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

T3A11

30. Which region of the atmosphere can refract or bend HF and VHF radio waves?

• A. The troposphere
• B. The stratosphere
• C. The ionosphere
• D. The mesosphere

T4A09

31. How can you determine the length of time that equipment can be powered from a battery?

• A. Multiply the square of the current rating of the battery by the input resistance of the equipment
• B. Divide the watt-hour rating of the battery by the peak power consumption of the equipment
• C. Divide the battery ampere-hour rating by the average current draw of the equipment
• D. Multiply the watts per hour consumed by the equipment by the battery power rating

T0A08

32. Where should a fuse or circuit breaker be installed in a 120V AC power circuit?

• A. In parallel with the hot and neutral conductors
• B. In series with the hot conductor only
• C. In parallel with the hot conductor only
• D. In series with the hot and neutral conductors

T8C07

33. What is Voice Over Internet Protocol (VoIP)?

• A. A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet
• B. A set of rules specifying how to identify your station when linked over the internet to another station
• C. A method of delivering voice communications over the internet using digital techniques
• D. A technique employed to "spot" DX stations via the internet

T7C06

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

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

T9A05

35. Which of the following increases the resonant frequency of a dipole antenna?

• A. Lengthening it
• B. Inserting coils in series with radiating wires
• C. Shortening it
• D. Adding capacitive loading to the ends of the radiating wires