Practice Exam

T3A07

1. What weather condition might decrease range at microwave frequencies?

• A. High winds
• B. Low barometric pressure
• C. Colder temperatures
• D. Precipitation

T5D11

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

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

T8B03

3. Which of the following are provided by satellite tracking programs?

• A. The time, azimuth, and elevation of the start, maximum altitude, and end of a pass
• B. The apparent frequency of the satellite transmission, including effects of Doppler shift
• C. All these choices are correct
• D. Maps showing the real-time position of the satellite track over Earth

T1E05

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

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

T8A02

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

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

T7D02

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

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

T9A08

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

• A. 12
• B. 50
• C. 19
• D. 112

T4B12

8. What is the result of tuning an FM receiver above or below a signal's frequency?

• A. Distortion of the signal's audio
• B. Sideband inversion
• C. Change in audio pitch
• D. Generation of a heterodyne tone

T1F07

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

T6B04

10. Which of the following components can consist of three regions of semiconductor material?

• A. Alternator
• B. Pentagrid converter
• C. Transistor
• D. Triode

T2B03

11. Which of the following describes a linked repeater network?

• A. Multiple repeaters with the same control operator
• B. A single repeater with more than one receiver
• C. A system of repeaters linked by APRS
• D. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network

T2C04

12. What is RACES?

• A. An international radio experimentation society
• B. A radio contest held in a short period, sometimes called a "sprint"
• C. An emergency organization combining amateur radio and citizens band operators and frequencies
• D. An FCC part 97 amateur radio service for civil defense communications during national emergencies

T1C11

13. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. Yes, for up to one year
• B. No, you must wait until the license has been renewed
• C. Yes, for up to two years
• D. Yes, as soon as you apply for renewal

T1B07

14. Which of the following VHF/UHF band segments are limited to CW only?

• A. 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
• B. All these choices are correct
• C. 902.0 MHz to 902.1 MHz
• D. 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

T6D08

15. Which of the following is combined with an inductor to make a resonant circuit?

• A. Capacitor
• B. Zener diode
• C. Resistor
• D. Potentiometer

T0A11

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

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

T3C05

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

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

T7A09

18. What is the function of the SSB/CW-FM switch on a VHF power amplifier?

• A. Reduce the received signal noise
• B. Set the amplifier for proper operation in the selected mode
• C. Change the mode of the transmitted signal
• D. Change the frequency range of the amplifier to operate in the proper segment of the band

T5C11

19. How much current is required to deliver 120 watts at a voltage of 12 volts DC?

• A. 0.1 amperes
• B. 10 amperes
• C. 132 amperes
• D. 12 amperes

T6A03

20. What electrical parameter is controlled by a potentiometer?

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

T3B08

21. What frequency range is referred to as VHF?

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

T1A04

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

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

T8D02

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

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

T5A07

24. Why are metals generally good conductors of electricity?

• A. They have relatively high density
• B. All these choices are correct
• C. They have many free protons
• D. They have many free electrons

T7B02

25. What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?

• A. The receiver is unable to reject strong signals outside the AM or FM band
• B. The microphone gain of the transmitter is turned up too high
• C. The audio amplifier of the transmitter is overloaded
• D. The deviation of an FM transmitter is set too low

T8C04

26. Which of the following is good procedure when contacting another station in a contest?

• A. Send only the minimum information needed for proper identification and the contest exchange
• B. All these choices are correct
• C. Sign only the last two letters of your call if there are many other stations calling
• D. Contact the station twice to be sure that you are in his log

T9B08

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

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

T4A03

28. Why are short, heavy-gauge wires used for a transceiver's DC power connection?

• A. All these choices are correct
• B. To avoid RF interference
• C. To provide a good counterpoise for the antenna
• D. To minimize voltage drop when transmitting

T2A05

29. How should you respond to a station calling CQ?

• A. Transmit a signal report followed by your call sign
• B. Transmit "CQ" followed by the other station's call sign
• C. Transmit the other station's call sign followed by your call sign
• D. Transmit your call sign followed by the other station's call sign

T6C01

30. What is the name of an electrical wiring diagram that uses standard component symbols?

• A. Schematic
• B. Connector pinout
• C. Bill of materials
• D. Flow chart

T7C04

31. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

• A. Full Scale
• B. 50:50
• C. Zero
• D. 1:1

T1D03

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

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

T0C05

33. Why do exposure limits vary with frequency?

• A. Lower frequency RF fields do not penetrate the human body
• B. The human body absorbs more RF energy at some frequencies than at others
• C. Lower frequency RF fields have more energy than higher frequency fields
• D. Higher frequency RF fields are transient in nature

T0B04

34. Which of the following is an important safety precaution to observe when putting up an antenna tower?

• A. Look for and stay clear of any overhead electrical wires
• B. Wear a ground strap connected to your wrist at all times
• C. All these choices are correct
• D. Insulate the base of the tower to avoid lightning strikes

T5B03

35. Which is equal to one kilovolt?

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