Practice Exam

T9A07

1. What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

• A. The bandwidth of the antenna will decrease, increasing SWR
• B. The SWR might decrease, decreasing the signal strength
• C. All these choices are correct
• D. Signal strength is reduced due to the shielding effect of the vehicle

T3A01

2. Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?

• A. All these choices are correct
• B. Multipath propagation cancels or reinforces signals
• C. VHF ionospheric propagation is very sensitive to path length
• D. The signal path encounters different concentrations of water vapor

T8B09

3. What causes spin fading of satellite signals?

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

T8A09

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

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

T6A12

5. What type of switch is represented by component 3 in figure T-2?

• A. Double-pole single-throw
• B. Single-pole single-throw
• C. Double-pole double-throw
• D. Single-pole double-throw

T1C06

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

• A. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3
• B. From within any country that is a member of the United Nations
• 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

T8C06

7. How is over the air access to IRLP nodes accomplished?

• A. By using CTCSS tone codes
• B. By using DTMF signals
• C. By entering the proper internet password
• D. By obtaining a password that is sent via voice to the node

T3C05

8. 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

T4B11

9. Which of the following must be programmed into a D-STAR digital transceiver before transmitting?

• A. Your output power
• B. All these choices are correct
• C. The codec type being used
• D. Your call sign

T6B01

10. Which is true about forward voltage drop in a diode?

• A. It is lower in some diode types than in others
• B. It indicates that the diode is defective
• C. It has no impact on the voltage delivered to the load
• D. It is proportional to peak inverse voltage

T6C12

11. Which of the following is accurately represented in electrical schematics?

• A. Wire lengths
• B. All these choices are correct
• C. Component connections
• D. Physical appearance of components

T0B10

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

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

T1F02

13. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. Once during every hour
• B. At the end of every transmission
• C. Never, the tactical call is sufficient
• D. At the end of each communication and every ten minutes during a communication

T5D12

14. What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

• A. 20 volts
• B. 12 volts
• C. 0.2 volts
• D. 8 volts

T3B11

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

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

T2A09

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

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

T7D01

17. Which instrument would you use to measure electric potential?

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

T7C04

18. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

• A. 50:50
• B. Full Scale
• C. Zero
• D. 1:1

T1D10

19. How does the FCC define broadcasting for the Amateur Radio Service?

• A. Transmission of messages directed only to amateur operators
• B. Transmissions intended for reception by the general public
• C. Any transmission made by the licensed station
• D. Two-way transmissions by amateur stations

T6D02

20. What is a relay?

• A. A current controlled amplifier
• B. An electrically-controlled switch
• C. A pass transistor
• D. An inverting amplifier

T9B04

21. 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 helps a receiver automatically tune in weak stations
• C. It automatically selects the proper antenna for the frequency band being used
• D. It allows an antenna to be used on both transmit and receive

T1B04

22. Which amateur band includes 146.52 MHz?

• A. 2 meters
• B. 70 centimeters
• C. 20 meters
• D. 6 meters

T2C08

23. Which of the following is a characteristic of good traffic handling?

• A. Making decisions as to whether messages are worthy of relay or delivery
• B. Ensuring that any newsworthy messages are relayed to the news media
• C. Passing messages exactly as received
• D. All these choices are correct

T8D13

24. What is FT8?

• A. A digital mode capable of low signal-to-noise operation
• B. A wideband FM voice mode
• C. A digital slow-scan TV mode with forward error correction and automatic color compensation
• D. An eight channel multiplex mode for FM repeaters

T2B01

25. How is a VHF/UHF transceiver's "reverse" function used?

• A. To increase power output
• B. To listen on a repeater's input frequency
• C. To listen on a repeater's output frequency
• D. To reduce power output

T7A08

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

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

T0A02

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

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

T5C07

28. What is the abbreviation for megahertz?

• A. MHz
• B. mh
• C. MH
• D. Mhz

T4A04

29. How are the transceiver audio input and output connected in a station configured to operate using FT8?

• A. To a computer running a terminal program and connected to a terminal node controller unit
• B. To the audio input and output of a computer running WSJT-X software
• C. To an FT8 conversion unit, a keyboard, and a computer monitor
• D. To a computer connected to the FT8converter.com website

T1A02

30. Which agency regulates and enforces the rules for the Amateur Radio Service in the United States?

• A. FEMA
• B. Homeland Security
• C. The FCC
• D. All these choices are correct

T7B07

31. Which of the following can reduce overload of a VHF transceiver by a nearby commercial FM station?

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

T1E07

32. When the control operator is not the station licensee, who is responsible for the proper operation of the station?

• A. Only the control operator
• B. The control operator and the station licensee
• C. Only the station licensee
• D. All licensed amateurs who are present at the operation

T5B05

33. Which is equal to 500 milliwatts?

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

T5A10

34. Which term describes the rate at which electrical energy is used?

• A. Voltage
• B. Resistance
• C. Current
• D. Power

T0C02

35. At which of the following frequencies does maximum permissible exposure have the lowest value?

• A. 3.5 MHz
• B. 1296 MHz
• C. 440 MHz
• D. 50 MHz