Practice Exam

T6C02

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

• A. Battery
• B. Transistor
• C. Connector
• D. Resistor

T2A08

2. What is the meaning of the procedural signal "CQ"?

• A. Call on the quarter hour
• B. Calling any station
• C. Only the called station should transmit
• D. Test transmission, no reply expected

T9A12

3. What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

• A. It has more gain than a 1/4-wavelength antenna
• B. It eliminates distortion caused by reflected signals
• C. It has 10 times the power gain of a 1/4 wavelength whip
• D. It radiates at a very high angle

T1D04

4. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When the music is transmitted above 1280 MHz
• B. When the music produces no spurious emissions
• C. When transmissions are limited to less than three minutes per hour
• D. When incidental to an authorized retransmission of manned spacecraft communications

T1F07

5. 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 person must be a U.S. citizen
• C. The licensed control operator must do the station identification
• D. All these choices are correct

T8A09

6. What is the approximate bandwidth of a VHF repeater FM voice signal?

• A. Between 10 and 15 kHz
• B. Between 50 and 125 kHz
• C. About 150 kHz
• D. Less than 500 Hz

T5B05

7. Which is equal to 500 milliwatts?

• A. 0.02 watts
• B. 5 watts
• C. 0.5 watts
• D. 50 watts

T6B08

8. What does the abbreviation FET stand for?

• A. Fast Electron Transistor
• B. Free Electron Transmitter
• C. Frequency Emission Transmitter
• D. Field Effect Transistor

T7B06

9. Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

• A. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
• B. All these choices are correct
• C. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• D. Immediately turn off your transmitter and contact the nearest FCC office for assistance

T2C03

10. What technique is used to ensure that voice messages containing unusual words are received correctly?

• A. All these choices are correct
• B. Speak very loudly into the microphone
• C. Spell the words using a standard phonetic alphabet
• D. Send the words by voice and Morse code

T5C01

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

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

T4B04

12. What is a way to enable quick access to a favorite frequency or channel on your transceiver?

• A. Use the scan mode to select the desired frequency
• B. Store it in a memory channel
• C. Enable the frequency offset
• D. Enable the VOX

T0C03

13. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. There is no adjustment allowed for lower duty cycle
• B. It increases by a factor of 3
• C. It decreases by 50 percent
• D. It increases by a factor of 2

T1A01

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

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

T8C09

15. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. D-STAR
• B. IRLP
• C. EchoLink
• D. DMR

T4A12

16. What is an electronic keyer?

• A. A device that assists in manual sending of Morse code
• B. An interlock to prevent unauthorized use of a radio
• C. A device for switching antennas from transmit to receive
• D. A device for voice activated switching from receive to transmit

T9B10

17. What is the electrical difference between RG-58 and RG-213 coaxial cable?

• A. There is no significant difference between the two types
• B. RG-58 cable can handle higher power levels
• C. RG-213 cable has less loss at a given frequency
• D. RG-58 cable has two shields

T8D02

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

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

T6D06

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

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

T6A09

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

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

T1C06

21. From which of the following locations may an FCC-licensed amateur station transmit?

• A. From within any country that is a member of the United Nations
• B. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• C. From any vessel or craft located in international waters and documented or registered in the United States
• D. From within any country that belongs to the International Telecommunication Union

T7A07

22. What is the function of a transceiver's PTT input?

• A. Provides a transmit tuning tone when grounded
• B. Input for a preamplifier tuning tone
• C. Switches transceiver from receive to transmit when grounded
• D. Input for a key used to send CW

T7C02

23. Which of the following is used to determine if an antenna is resonant at the desired operating frequency?

• A. A Q meter
• B. A frequency counter
• C. An antenna analyzer
• D. A VTVM

T1B10

24. Where may SSB phone be used in amateur bands above 50 MHz?

• A. Only on repeaters
• B. Only in sub-bands allocated to General class or higher licensees
• C. On any band if the power is limited to 25 watts
• D. In at least some segment of all these bands

T7D04

25. Which instrument is used to measure electric current?

• A. An ammeter
• B. An electrometer
• C. An ohmmeter
• D. A voltmeter

T8B11

26. Who may receive telemetry from a space station?

• A. A licensed radio amateur who has registered for an access code from AMSAT
• B. Anyone
• C. A licensed radio amateur who has been certified by the protocol developer
• D. A licensed radio amateur with a transmitter equipped for interrogating the satellite

T3A07

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

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

T2B12

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

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

T1E04

29. 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 class of operator license held by the control operator
• C. The frequencies printed on the license grant
• D. The frequency authorized by the frequency coordinator

T0B09

30. Why should you avoid attaching an antenna to a utility pole?

• A. The 60 Hz radiations from the feed line may increase the SWR
• B. The antenna could contact high-voltage power lines
• C. All these choices are correct
• D. The antenna will not work properly because of induced voltages

T3B01

31. What is the relationship between the electric and magnetic fields of an electromagnetic wave?

• A. They travel at different speeds
• B. They are in parallel
• C. They are at right angles
• D. They revolve in opposite directions

T3C03

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

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

T0A11

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

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

T5D11

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

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

T5A11

35. What type of current flow is opposed by resistance?

• A. All these choices are correct
• B. Alternating current
• C. Direct current
• D. RF current