Practice Exam

T9A12

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

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

T6A03

2. What electrical parameter is controlled by a potentiometer?

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

T1D01

3. With which countries are FCC-licensed amateur radio stations prohibited from exchanging communications?

• A. Any country banned from such communications by the International Amateur Radio Union (IARU)
• B. Any country banned from making such communications by the American Radio Relay League (ARRL)
• C. Any country whose administration has notified the International Telecommunication Union (ITU) that it objects to such communications
• D. Any country whose administration has notified the American Radio Relay League (ARRL) that it objects to such communications

T0C01

4. What type of radiation are radio signals?

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

T7B04

5. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Ferrite choke
• B. Preamplifier
• C. Band-pass filter
• D. Low-pass filter

T7C10

6. 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

T6B10

7. Which of the following can provide power gain?

• A. Reactor
• B. Transformer
• C. Transistor
• D. Resistor

T1E01

8. When may an amateur station transmit without a control operator?

• A. When using automatic control, such as in the case of a repeater
• B. When the transmitting station is an auxiliary station
• C. Never
• D. When the station licensee is away and another licensed amateur is using the station

T5A07

9. Why are metals generally good conductors of electricity?

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

T8B11

10. Who may receive telemetry from a space station?

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

T2B06

11. What type of signaling uses pairs of audio tones?

• A. GPRS
• B. CTCSS
• C. D-STAR
• D. DTMF

T6C04

12. What is component 3 in figure T-1?

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

T8D07

13. Which of the following describes DMR?

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

T3C03

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

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

T1B06

15. On which HF bands does a Technician class operator have phone privileges?

• A. 80 meter, 40 meter, 15 meter, and 10 meter bands
• B. None
• C. 10 meter band only
• D. 30 meter band only

T1F06

16. Which of the following self-assigned indicators are acceptable when using a phone transmission?

• A. KL7CC stroke W3
• B. All these choices are correct
• C. KL7CC slash W3
• D. KL7CC slant W3

T1A11

17. When is willful interference to other amateur radio stations permitted?

• A. When making short test transmissions
• B. At no time
• C. At any time, stations in the Amateur Radio Service are not protected from willful interference
• D. To stop another amateur station that is breaking the FCC rules

T5B12

18. Which is equal to 28400 kHz?

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

T7A01

19. Which term describes the ability of a receiver to detect the presence of a signal?

• A. Total Harmonic Distortion
• B. Selectivity
• C. Sensitivity
• D. Linearity

T2C07

20. Which of the following is standard practice when you participate in a net?

• A. All these choices are correct
• B. When first responding to the net control station, transmit your call sign, name, and address as in the FCC database
• C. Record the time of each of your transmissions
• D. Unless you are reporting an emergency, transmit only when directed by the net control station

T1C02

21. Who may select a desired call sign under the vanity call sign rules?

• A. Only a licensed amateur with a General or Amateur Extra Class license
• B. Only a licensed amateur with an Amateur Extra Class license
• C. Any licensed amateur
• D. Only a licensed amateur who has been licensed continuously for more than 10 years

T5C11

22. 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

T9B11

23. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. 50-ohm flexible coax
• B. 75-ohm flexible coax
• C. Air-insulated hardline
• D. Multi-conductor unbalanced cable

T6D03

24. Which of the following is a reason to use shielded wire?

• A. To couple the wire to other signals
• B. To increase the current carrying capability of the wire
• C. To prevent coupling of unwanted signals to or from the wire
• D. To decrease the resistance of DC power connections

T3B05

25. What is the relationship between wavelength and frequency?

• A. Wavelength gets shorter as frequency increases
• B. Wavelength and frequency are unrelated
• C. Wavelength and frequency increase as path length increases
• D. Wavelength gets longer as frequency increases

T0A02

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

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

T8A09

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

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

T3A06

28. What is the meaning of the term "picket fencing"?

• A. Rapid flutter on mobile signals due to multipath propagation
• B. A type of ground system used with vertical antennas
• C. Local vs long-distance communications
• D. Alternating transmissions during a net operation

T7D11

29. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the applied voltages are correct
• B. Ensure that the circuit is operating at the correct frequency
• C. Ensure that the circuit is grounded
• D. Ensure that the circuit is not powered

T4B03

30. How is squelch adjusted so that a weak FM signal can be heard?

• A. Enable squelch enhancement
• B. Turn up the audio level until it overcomes the squelch threshold
• C. Set the squelch threshold so that receiver output audio is on all the time
• D. Turn on the anti-squelch function

T4A05

31. Where should an RF power meter be installed?

• A. In the feed line, between the transmitter and antenna
• B. At the power supply output
• 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

T5D14

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

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

T2A12

33. What should you do before calling CQ?

• A. Ask if the frequency is in use
• B. Make sure you are authorized to use that frequency
• C. All these choices are correct
• D. Listen first to be sure that no one else is using the frequency

T8C01

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

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

T0B07

35. Which of the following is an important safety rule to remember when using a crank-up tower?

• A. This type of tower must never be painted
• B. All these choices are correct
• C. This type of tower must not be climbed unless it is retracted, or mechanical safety locking devices have been installed
• D. This type of tower must never be grounded