Practice Exam

T4B10

1. Which of the following receiver filter bandwidths provides the best signal-to-noise ratio for SSB reception?

• A. 5000 Hz
• B. 1000 Hz
• C. 2400 Hz
• D. 500 Hz

T1B02

2. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a Technician class or higher license
• B. Any amateur holding a General class or higher license who has applied for and received approval from NASA
• C. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA
• D. Any amateur holding a General class or higher license

T5D02

3. What formula is used to calculate voltage in a circuit?

• A. E= I x R
• B. E= I / R
• C. E = I - R
• D. E= I + R

T9A09

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

• A. 112
• B. 236
• C. 6
• D. 50

T1D11

5. When may an amateur station transmit without identifying on the air?

• A. When the transmitted power level is below 1 watt
• B. When transmitting signals to control model craft
• C. When the transmissions are unmodulated
• D. When the transmissions are of a brief nature to make station adjustments

T6B02

6. What electronic component allows current to flow in only one direction?

• A. Fuse
• B. Driven element
• C. Resistor
• D. Diode

T8C01

7. Which of the following methods is used to locate sources of noise interference or jamming?

• A. Radio direction finding
• B. Doppler radar
• C. Echolocation
• D. Phase locking

T6C06

8. What is component 6 in figure T-2?

• A. Regulator IC
• B. Capacitor
• C. Transistor
• D. Resistor

T8A05

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

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

T6D10

10. What is the function of component 2 in figure T-1?

• A. Control the flow of current
• B. Convert electrical energy into radio waves
• C. Give off light when current flows through it
• D. Supply electrical energy

T2C11

11. What is meant by "check" in a radiogram header?

• A. A box on the message form that indicates that the message was received and/or relayed
• B. A list of stations that have relayed the message
• C. The call sign of the originating station
• D. The number of words or word equivalents in the text portion of the message

T3C02

12. What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

• A. HF accommodates wider bandwidth signals
• B. Long-distance ionospheric propagation is far more common on HF
• C. There is less atmospheric interference (static) on HF
• D. HF antennas are generally smaller

T3A09

13. Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

• A. Both the transmitting and receiving antennas must be of the same polarization
• B. Digital modes are unusable
• C. FM voice is unusable
• D. Either vertically or horizontally polarized antennas may be used for transmission or reception

T5A04

14. What are the units of electrical resistance?

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

T1C03

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

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

T0C08

16. Which of the following actions can reduce exposure to RF radiation?

• A. All these choices are correct
• B. Increase the duty cycle
• C. Relocate the transmitter
• D. Relocate antennas

T8B04

17. What mode of transmission is commonly used by amateur radio satellites?

• A. SSB
• B. CW/data
• C. FM
• D. All these choices are correct

T7C03

18. What does a dummy load consist of?

• A. A non-inductive resistor mounted on a heat sink
• B. A 50-ohm reactance used to terminate a transmission line
• C. A low-voltage power supply and a DC relay
• D. A high-gain amplifier and a TR switch

T8D07

19. Which of the following describes DMR?

• A. An automatic computer logging technique for hands-off logging when communicating while operating a vehicle
• B. A digital technique for transmitting on two repeater inputs simultaneously for automatic error correction
• C. A technique for time-multiplexing two digital voice signals on a single 12.5 kHz repeater channel
• D. An automatic position tracking mode for FM mobiles communicating through repeaters

T1E06

20. When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

• A. At no time
• B. When designated as the control operator by an Amateur Extra Class licensee
• C. When using a club station whose trustee holds an Amateur Extra Class license
• D. As part of a multi-operator contest team

T7A08

21. Which of the following describes combining speech with an RF carrier signal?

• A. Impedance matching
• B. Oscillation
• C. Modulation
• D. Low-pass filtering

T0A08

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

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

T2A09

23. Which of the following indicates that a station is listening on a repeater and looking for a contact?

• A. The station's call sign followed by the word "monitoring"
• B. "CQ CQ" followed by the repeater's call sign
• C. "QSY" followed by your call sign
• D. The repeater call sign followed by the station's call sign

T9B06

24. Which of the following RF connector types is most suitable for frequencies above 400 MHz?

• A. UHF (PL-259/SO-239)
• B. DB-25
• C. Type N
• D. RS-213

T1F09

25. 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

T7D08

26. Which of the following types of solder should not be used for radio and electronic applications?

• A. Acid-core solder
• B. Tin-copper solder
• C. Lead-tin solder
• D. Rosin-core solder

T5B12

27. Which is equal to 28400 kHz?

• A. 28.400 MHz
• B. 28.400 kHz
• C. 2.800 MHz
• D. 284.00 MHz

T1A10

28. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. A radio service using amateur stations for emergency management or civil defense communications
• B. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
• C. All these choices are correct
• D. A radio service using amateur frequencies for emergency management or civil defense communications

T7B08

29. What should you do if something in a neighbor's home is causing harmful interference to your amateur station?

• A. Work with your neighbor to identify the offending device
• B. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference
• C. All these choices are correct
• D. Make sure your station meets the standards of good amateur practice

T2B10

30. Which Q signal indicates that you are receiving interference from other stations?

• A. QTH
• B. QRM
• C. QSB
• D. QRN

T6A10

31. Which of the following battery chemistries is rechargeable?

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

T0B05

32. 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. Provide an ability to measure for proper tensioning
• C. Prevent loosening of the turnbuckle from vibration
• D. Secure the guy line if the turnbuckle breaks

T4A09

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

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

T3B01

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

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

T5C13

35. What is the abbreviation for kilohertz?

• A. khz
• B. KHZ
• C. kHz
• D. khZ