Practice Exam

T3C05

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

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

T6D01

2. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Amplifier
• B. Reflector
• C. Rectifier
• D. Transformer

T8D02

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

• A. A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
• 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 group of operators sharing common interests

T2A02

4. What is the national calling frequency for FM simplex operations in the 2 meter band?

• A. 146.520 MHz
• B. 432.100 MHz
• C. 145.000 MHz
• D. 446.000 MHz

T6A09

5. What electrical component is used to protect other circuit components from current overloads?

• A. All these choices are correct
• B. Fuse
• C. Varactor
• D. Thyratron

T7B10

6. What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

• A. Your transmitter is slightly off frequency
• B. All these choices are correct
• C. Your batteries are running low
• D. You are in a bad location

T7C06

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

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

T1E09

8. Which of the following are required for remote control operation?

• A. The control operator must be at the control point
• B. The control operator must indirectly manipulate the controls
• C. A control operator is required at all times
• D. All these choices are correct

T5D11

9. What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

• A. 1 volt
• B. 11 volts
• C. 9 volts
• D. 10 volts

T8B10

10. What is a LEO satellite?

• A. A highly elliptical orbit satellite
• B. A satellite in low energy operation mode
• C. A sun synchronous satellite
• D. A satellite in low earth orbit

T2C05

11. What does the term "traffic" refer to in net operation?

• A. Messages exchanged by net stations
• B. Operation by mobile or portable stations
• C. The number of stations checking in and out of a net
• D. Requests to activate the net by a served agency

T1F09

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

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

T5C13

13. What is the abbreviation for kilohertz?

• A. khZ
• B. kHz
• C. KHZ
• D. khz

T3B07

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

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

T8A03

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

• A. SSB
• B. DRM
• C. FM
• D. PM

T9A08

16. What is the approximate length, in inches, of a quarter-wavelength vertical antenna for 146 MHz?

• A. 112
• B. 50
• C. 12
• D. 19

T9B02

17. What is the most common impedance of coaxial cables used in amateur radio?

• A. 12 ohms
• B. 600 ohms
• C. 8 ohms
• D. 50 ohms

T2B09

18. Why are simplex channels designated in the VHF/UHF band plans?

• A. So stations within range of each other can communicate without tying up a repeater
• B. For contest operation
• C. So stations with simple transmitters can access the repeater without automated offset
• D. For working DX only

T6B01

19. Which is true about forward voltage drop in a diode?

• A. It is lower in some diode types than in others
• B. It is proportional to peak inverse voltage
• C. It has no impact on the voltage delivered to the load
• D. It indicates that the diode is defective

T5A02

20. Electrical power is measured in which of the following units?

• A. Watts
• B. Amperes
• C. Watt-hours
• D. Volts

T1C04

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

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

T1A01

22. Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

• A. All these choices are correct
• B. Providing communications for international non-profit organizations
• C. Providing personal radio communications for as many citizens as possible
• D. Advancing skills in the technical and communication phases of the radio art

T0C01

23. What type of radiation are radio signals?

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

T1D09

24. When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

• A. Never
• B. When broadcasting communications to or from the space shuttle
• C. When such communications are directly related to the immediate safety of human life or protection of property
• D. Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network

T5B03

25. Which is equal to one kilovolt?

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

T4A05

26. Where should an RF power meter be installed?

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

T0B03

27. Under what circumstances is it safe to climb a tower without a helper or observer?

• A. When the work being done is not more than 20 feet above the ground
• B. When no electrical work is being performed
• C. When no mechanical work is being performed
• D. Never

T1B04

28. Which amateur band includes 146.52 MHz?

• A. 20 meters
• B. 70 centimeters
• C. 6 meters
• D. 2 meters

T8C10

29. What is required before using the EchoLink system?

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

T0A02

30. What health hazard is presented by electrical current flowing through the body?

• A. All these choices are correct
• B. It may cause involuntary muscle contractions
• C. It may disrupt the electrical functions of cells
• D. It may cause injury by heating tissue

T7D10

31. What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

• A. Increasing resistance with time
• B. Alternating between open and short circuit
• C. Steady full-scale reading
• D. Decreasing resistance with time

T6C05

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

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

T7A11

33. Where is an RF preamplifier installed?

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

T3A12

34. What is the effect of fog and rain on signals in the 10 meter and 6 meter bands?

• A. There is little effect
• B. Absorption
• C. Deflection
• D. Range increase

T4B01

35. What is the effect of excessive microphone gain on SSB transmissions?

• A. Frequency instability
• B. All these choices are correct
• C. Increased SWR
• D. Distorted transmitted audio