Practice Exam

T6D02

1. What is a relay?

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

T1F11

2. Which of the following is a requirement for the issuance of a club station license grant?

• A. All these choices are correct
• B. The club must be registered with the American Radio Relay League
• C. The trustee must have an Amateur Extra Class operator license grant
• D. The club must have at least four members

T1A02

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

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

T4B02

4. Which of the following can be used to enter a transceiver's operating frequency?

• A. The Automatic Frequency Control
• B. The keypad or VFO knob
• C. The CTCSS or DTMF encoder
• D. All these choices are correct

T8C09

5. 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. EchoLink
• C. IRLP
• D. D-STAR

T5D12

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

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

T7B09

7. What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

• A. Add a high-pass filter to the TV antenna input
• B. Add a preamplifier to the TV antenna input
• C. Add a low-pass filter to the TV antenna input
• D. Be sure all TV feed line coaxial connectors are installed properly

T8D04

8. What type of transmission is indicated by the term "NTSC?"

• A. A frame compression scheme for TV signals
• B. A special mode for satellite uplink
• C. An analog fast-scan color TV signal
• D. A Normal Transmission mode in Static Circuit

T3B03

9. What are the two components of a radio wave?

• A. Voltage and current
• B. Electric and magnetic fields
• C. Impedance and reactance
• D. Ionizing and non-ionizing radiation

T8A08

10. What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• A. 3 kHz
• B. 1 kHz
• C. 6 kHz
• D. 15 kHz

T6C01

11. What is the name of an electrical wiring diagram that uses standard component symbols?

• A. Flow chart
• B. Bill of materials
• C. Schematic
• D. Connector pinout

T4A10

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

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

T0C05

13. Why do exposure limits vary with frequency?

• A. Lower frequency RF fields have more energy than higher frequency fields
• B. The human body absorbs more RF energy at some frequencies than at others
• C. Higher frequency RF fields are transient in nature
• D. Lower frequency RF fields do not penetrate the human body

T8B07

14. What is Doppler shift in reference to satellite communications?

• A. An observed change in signal frequency caused by relative motion between the satellite and Earth station
• B. A special digital communications mode for some satellites
• C. A mode where the satellite receives signals on one band and transmits on another
• D. A change in the satellite orbit

T1E10

15. Which of the following is an example of remote control as defined in Part 97?

• A. Controlling a model aircraft, boat, or car by amateur radio
• B. Repeater operation
• C. Operating the station over the internet
• D. All these choices are correct

T2B03

16. Which of the following describes a linked repeater network?

• A. A system of repeaters linked by APRS
• B. Multiple repeaters with the same control operator
• C. A single repeater with more than one receiver
• D. A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network

T0B02

17. What is required when climbing an antenna tower?

• A. Always wear an approved climbing harness
• B. Have sufficient training on safe tower climbing techniques
• C. All these choices are correct
• D. Use appropriate tie-off to the tower at all times

T0A04

18. What is the purpose of a fuse in an electrical circuit?

• A. To remove power in case of overload
• B. All these choices are correct
• C. To prevent power supply ripple from damaging a component
• D. To limit current to prevent shocks

T2A01

19. What is a common repeater frequency offset in the 2 meter band?

• A. Plus or minus 500 kHz
• B. Plus or minus 1 MHz
• C. Plus or minus 5 MHz
• D. Plus or minus 600 kHz

T9A11

20. What is antenna gain?

• A. The increase in signal strength in a specified direction compared to a reference antenna
• B. The additional power that is added to the transmitter power
• C. The additional power that is required in the antenna when transmitting on a higher frequency
• D. The increase in impedance on receive or transmit compared to a reference antenna

T5B13

21. Which is equal to 2425 MHz?

• A. 2.425 GHz
• B. 24.25 GHz
• C. 0.002425 GHz
• D. 2425 GHz

T6B06

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

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

T1B12

23. Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz?

• A. 500 watts
• B. 1500 watts
• C. 50 watts
• D. 100 watts

T3A01

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

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

T6A03

25. What electrical parameter is controlled by a potentiometer?

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

T2C09

26. Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?

• A. No
• B. Yes, but only in situations involving the immediate safety of human life or protection of property
• C. Yes, but only when part of a FEMA emergency plan
• D. Yes, but only when part of a RACES emergency plan

T7A04

27. Which term describes the ability of a receiver to discriminate between multiple signals?

• A. Harmonic distortion
• B. Selectivity
• C. Discrimination ratio
• D. Sensitivity

T1D05

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

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

T1C08

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

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

T7D11

30. 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 not powered
• D. Ensure that the circuit is grounded

T5C08

31. What is the formula used to calculate electrical power (P) in a DC circuit?

• A. P = E / I
• B. P = E + I
• C. P = E * I
• D. P = E - I

T3C03

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

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

T5A02

33. Electrical power is measured in which of the following units?

• A. Volts
• B. Amperes
• C. Watt-hours
• D. Watts

T7C04

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

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

T9B10

35. What is the electrical difference between RG-58 and RG-213 coaxial cable?

• A. RG-58 cable can handle higher power levels
• B. There is no significant difference between the two types
• C. RG-58 cable has two shields
• D. RG-213 cable has less loss at a given frequency