Practice Exam

T6A10

1. Which of the following battery chemistries is rechargeable?

• A. All these choices are correct
• B. Lithium-ion
• C. Nickel-metal hydride
• D. Lead-acid

T1D05

2. When may amateur radio operators use their stations to notify other amateurs of the availability of equipment for sale or trade?

• A. Never
• B. When selling amateur radio equipment and not on a regular basis
• C. When the equipment is not the personal property of either the station licensee, or the control operator, or their close relatives
• D. When no profit is made on the sale

T3C01

3. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. UHF signals are absorbed by the ionospheric D region
• B. They are too weak to go very far
• C. FCC regulations prohibit them from going more than 50 miles
• D. UHF signals are usually not propagated by the ionosphere

T7C10

4. Why should the outer jacket of coaxial cable be resistant to ultraviolet light?

• A. Ultraviolet and RF signals can mix, causing interference
• B. Ultraviolet light can increase losses in the cable's jacket
• C. Ultraviolet resistant jackets prevent harmonic radiation
• D. Ultraviolet light can damage the jacket and allow water to enter the cable

T2A04

5. What is an appropriate way to call another station on a repeater if you know the other station's call sign?

• A. Wait for the station to call CQ, then answer
• B. Say "CQ" three times, then the other station's call sign
• C. Say "break, break," then say the station's call sign
• D. Say the station's call sign, then identify with your call sign

T8A05

6. Which of the following types of signal has the narrowest bandwidth?

• A. Slow-scan TV
• B. FM voice
• C. CW
• D. SSB voice

T2C05

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

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

T9A09

8. What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

• A. 6
• B. 50
• C. 236
• D. 112

T1F03

9. When are you required to transmit your assigned call sign?

• A. At least every 10 minutes during and at the end of a communication
• B. At the beginning of each contact, and every 10 minutes thereafter
• C. At least every 15 minutes during and at the end of a communication
• D. At least once during each transmission

T8D08

10. Which of the following is included in packet radio transmissions?

• A. Automatic repeat request in case of error
• B. A header that contains the call sign of the station to which the information is being sent
• C. A check sum that permits error detection
• D. All these choices are correct

T2B11

11. Which Q signal indicates that you are changing frequency?

• A. QRU
• B. QRZ
• C. QSL
• D. QSY

T5A04

12. What are the units of electrical resistance?

• A. Coulombs
• B. Ohms
• C. Mhos
• D. Siemens

T6B06

13. How is the cathode lead of a semiconductor diode often marked on the package?

• A. With the letter C
• B. With a stripe
• C. With the letter K
• D. With the word "cathode"

T4B06

14. 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 bandwidth selection
• C. The tone squelch
• D. The AGC or limiter

T1A07

15. What is the FCC Part 97 definition of a space station?

• A. An amateur station using amateur radio satellites for relay of signals
• B. A manned satellite orbiting Earth
• C. Any satellite orbiting Earth
• D. An amateur station located more than 50 km above Earth's surface

T8C09

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

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

T1E02

17. Who may be the control operator of a station communicating through an amateur satellite or space station?

• A. Only an Amateur Extra Class operator
• B. A General class or higher licensee with a satellite operator certification
• C. Only an Amateur Extra Class operator who is also an AMSAT member
• D. Any amateur allowed to transmit on the satellite uplink frequency

T9B04

18. What is the major function of an antenna tuner (antenna coupler)?

• A. It matches the antenna system impedance to the transceiver's output impedance
• B. It allows an antenna to be used on both transmit and receive
• C. It automatically selects the proper antenna for the frequency band being used
• D. It helps a receiver automatically tune in weak stations

T8B09

19. What causes spin fading of satellite signals?

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

T3B11

20. What is the approximate velocity of a radio wave in free space?

• A. 300,000,000 meters per second
• B. 300,000,000 miles per hour
• C. 150,000 miles per hour
• D. 150,000 meters per second

T1B10

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

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

T4A10

22. What function is performed with a transceiver and a digital mode hot spot?

• A. High-speed digital communications for meteor scatter
• B. RTTY encoding and decoding without a computer
• C. Communication using digital voice or data systems via the internet
• D. FT8 digital communications via AFSK

T0B05

23. What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. Provide a ground path for lightning strikes
• B. Secure the guy line if the turnbuckle breaks
• C. Prevent loosening of the turnbuckle from vibration
• D. Provide an ability to measure for proper tensioning

T0A11

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

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

T7D09

25. What is the characteristic appearance of a cold tin-lead solder joint?

• A. A bright or shiny surface
• B. Excessive solder
• C. Dark black spots
• D. A rough or lumpy surface

T5B10

26. Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

• A. -9 dB
• B. -3 dB
• C. -6 dB
• D. -1 dB

T7A11

27. Where is an RF preamplifier installed?

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

T5C11

28. 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

T5D14

29. In which type of circuit is voltage the same across all components?

• A. Series
• B. Branch
• C. Parallel
• D. Resonant

T1C08

30. What is the normal term for an FCC-issued amateur radio license?

• A. Eight years
• B. Ten years
• C. Five years
• D. Life

T3A10

31. What effect does multi-path propagation have on data transmissions?

• A. Transmission rates must be increased by a factor equal to the number of separate paths observed
• B. Error rates are likely to increase
• C. No significant changes will occur if the signals are transmitted using FM
• D. Transmission rates must be decreased by a factor equal to the number of separate paths observed

T0C12

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

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

T7B11

33. What is a symptom of RF feedback in a transmitter or transceiver?

• A. Frequent blowing of power supply fuses
• B. Excessive SWR at the antenna connection
• C. Reports of garbled, distorted, or unintelligible voice transmissions
• D. The transmitter will not stay on the desired frequency

T6D08

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

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

T6C10

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

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