Practice Exam

T6B11

1. What does the term gain mean in amplifiers?

• A. The output signal voltage relative to the input signal voltage
• B. The output signal current relative to the input signal current
• C. The output signal power relative to the input signal power
• D. All these choices are correct

T3A11

2. Which region of the atmosphere can reflect HF radio waves?

• A. The electrosphere
• B. The ionosphere
• C. The troposphere
• D. The stratosphere

T7C10

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

• A. Ultraviolet light can increase losses in the cable's jacket
• B. Ultraviolet light can increase the resistance of the conductors
• C. Ultraviolet light can damage the jacket and allow water to enter the cable
• D. Ultraviolet and RF signals can mix, causing interference

T1E04

4. What determines the transmitting frequency privileges of an amateur station?

• A. The frequencies printed on the license grant
• B. The highest class of operator license held by anyone on the premises
• C. The frequency authorized by the frequency coordinator
• D. The class of operator license held by the control operator

T5B04

5. Which is equal to one microvolt?

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

T8D06

6. What does the abbreviation "PSK" mean?

• A. Pulse Shift Keying
• B. Power Sampled Keying
• C. Packet Sampled Keying
• D. Phase Shift Keying

T2B04

7. Which of the following could be the reason you are unable to access a repeater whose output you can hear?

• A. All these choices are correct
• B. You are using the wrong DCS code
• C. You are using the wrong CTCSS tone
• D. Improper transceiver offset

T1B06

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

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

T0A11

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

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

T7B07

10. Which of the following can reduce interference to a 2-meter band transceiver from a nearby commercial FM station?

• A. Installing a band-reject filter
• B. Using double-shielded coaxial cable
• C. Installing an RF preamplifier
• D. Installing bypass capacitors on the microphone cable

T9A10

11. In which direction does a half-wave dipole antenna radiate the strongest signal?

• A. Off the ends of the antenna
• B. Equally in all directions
• C. Broadside to the antenna
• D. In the direction of the feed line

T2C08

12. Which of the following relays messages using email addresses based on amateur callsigns?

• A. FT8
• B. PSK31
• C. AMTOR
• D. Winlink

T8B08

13. What does it mean if a satellite is operating in U/V mode?

• A. The satellite operates using ultraviolet frequencies
• B. The satellite uplink is in the 15-meter band and the downlink is in the 10-meter band
• C. The satellite uplink is in the 70-centimeter band and the downlink is in the 2-meter band
• D. The satellite frequencies are usually variable

T6D05

14. What type of circuit controls the amount of voltage from a power supply?

• A. Phase inverter
• B. Regulator
• C. Filter
• D. Oscillator

T9B03

15. Why is coaxial cable the most common feed line for amateur radio antenna systems?

• A. It is easy to use and requires few special installation considerations
• B. It has less loss than any other type of feed line
• C. It can handle more power than any other type of feed line
• D. It is less expensive than any other type of feed line

T5C10

16. How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

• A. 14.5 watts
• B. 0.208 watts
• C. 4.8 watts
• D. 30 watts

T1F04

17. What language must you use for identification when using a phone emission?

• A. Any language recognized by the United Nations
• B. English, French, or Spanish
• C. Any language recognized by the ITU
• D. English

T7D11

18. 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 grounded
• C. Ensure that the circuit is not powered
• D. Ensure that the circuit is operating at the correct frequency

T7A11

19. What is the function of the Variable Frequency Oscillator (VFO) circuit in a transceiver?

• A. Generate and demodulate single sideband signals
• B. Set the receive and transmit frequency
• C. Inject a variable frequency to allow CW reception
• D. Provide automatic frequency control

T0C09

20. How can you make sure your station stays in compliance with RF safety regulations?

• A. By re-evaluating the station whenever an item in the transmitter or antenna system is changed
• B. By using only Underwriter Laboratories approved transmitting equipment
• C. By informing the FCC of any changes made in your station
• D. By making sure your antennas have low SWR

T8A09

21. What is the approximate bandwidth of an FM voice signal on VHF repeaters?

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

T6A08

22. What is the function of an SPDT switch?

• A. Two circuits are opened or closed
• B. A single circuit is switched between one of two other circuits
• C. Two circuits are each switched between one of two other circuits
• D. A single circuit is opened or closed

T5D14

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

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

T2A02

24. What is the national calling frequency for FM simplex operations in the 2-meter band?

• A. 146.520 MHz
• B. 145.000 MHz
• C. 446.000 MHz
• D. 432.100 MHz

T8C05

25. What is a grid locator?

• A. An instrument for locating faults in power amplifiers
• B. A letter-number designator assigned to a geographic location
• C. A letter-number designator assigned to an azimuth and elevation
• D. An instrument for radio direction finding

T0B10

26. Which of the following is true when installing grounding conductors used for lightning protection?

• A. Common grounds must be avoided
• B. Use only non-insulated wire
• C. Sharp bends must be avoided
• D. Wires must be carefully routed with precise right-angle bends

T4B03

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

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

T5A05

28. A difference in which of the following causes electron flow?

• A. Voltage
• B. Capacitance
• C. Ampere-hours
• D. Inductance

T1D11

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

• A. When the transmissions are of a brief nature to make station adjustments
• B. When the transmitted power level is below 0.1 watt
• C. When transmitting signals to control model craft
• D. When the transmissions are unmodulated

T4A08

30. Which of the following conductors is preferred for bonding at RF?

• A. Copper braid removed from coaxial cable
• B. Copper-clad steel wire
• C. Twisted-pair cable
• D. Flat copper strap

T6C09

31. What is component 4 in figure T-2?

• A. Variable inductor
• B. Double-pole switch
• C. Transformer
• D. Potentiometer

T1A03

32. What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

• A. It is required when in contact with foreign stations
• B. All these choices are correct
• C. It is encouraged when using phone emissions
• D. It is required when transmitting emergency messages

T3B12

33. Which of these frequencies travels at the highest velocity in free space?

• A. Microwaves
• B. VHF
• C. UHF
• D. All radio frequencies travel at the same velocity

T1C03

34. What types of international communications are FCC-licensed amateur radio stations permitted to make?

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

T3C05

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

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