Practice Exam

T5A07

1. Why are metals generally good conductors of electricity?

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

T0C11

2. What is the definition of duty cycle during the averaging time for RF exposure?

• A. The difference between the PEP and average power output of a transmitter
• B. The percentage of time that a transmitter is transmitting
• C. The percentage of time that a transmitter is not transmitting
• D. The difference between the lowest power output and the highest power output of a transmitter

T6B06

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

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

T3A04

4. What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

• A. Received signal strength is reduced
• B. Signals have an echo effect
• C. The modulation sidebands might become inverted
• D. Nothing significant will happen

T4A05

5. Where should an RF power meter be installed?

• A. At the power supply output
• B. In the feed line, between the transmitter and antenna
• C. In parallel with the push-to-talk line and the antenna
• D. In the power supply cable, as close as possible to the radio

T1B05

6. How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?

• A. Spread spectrum only
• B. Fast-scan television only
• C. Fixed digital message forwarding systems only
• D. Emergency traffic only

T9B06

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

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

T5D08

8. What is the current through a 100-ohm resistor connected across 200 volts?

• A. 20,000 amperes
• B. 100 amperes
• C. 0.5 amperes
• D. 2 amperes

T6C02

9. What is component 1 in figure T-1?

• A. Connector
• B. Battery
• C. Transistor
• D. Resistor

T6A05

10. What type of electrical component consists of conductive surfaces separated by an insulator?

• A. Resistor
• B. Capacitor
• C. Oscillator
• D. Potentiometer

T7C03

11. What does a dummy load consist of?

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

T4B08

12. What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?

• A. Increases the amount of offset between receive and transmit frequencies
• B. Permits monitoring several modes at once by selecting a separate filter for each mode
• C. Increases the number of frequencies that can be stored in memory
• D. Permits noise or interference reduction by selecting a bandwidth matching the mode

T7A08

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

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

T8B12

14. Which of the following is a way to determine whether your satellite uplink power is neither too low nor too high?

• A. All these choices are correct
• B. Check your signal strength report in the telemetry data
• C. Listen for distortion on your downlink signal
• D. Your signal strength on the downlink should be about the same as the beacon

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

T1F08

16. What is the definition of third party communications?

• A. Operation when the transmitting equipment is licensed to a person other than the control operator
• B. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
• C. Amateur radio communications where three stations are in communications with one another
• D. A message from a control operator to another amateur station control operator on behalf of another person

T6D10

17. 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. Supply electrical energy
• D. Give off light when current flows through it

T9A11

18. What is antenna gain?

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

T3C07

19. What band is best suited for communicating via meteor scatter?

• A. 2 meters
• B. 33 centimeters
• C. 6 meters
• D. 70 centimeters

T0A11

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

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

T8A04

21. Which type of modulation is commonly used for VHF and UHF voice repeaters?

• A. FM or PM
• B. PSK
• C. SSB
• D. AM

T7B08

22. 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. Make sure your station meets the standards of good amateur practice
• C. All these choices are correct
• D. Politely inform your neighbor that FCC rules prohibit the use of devices that cause interference

T8D10

23. Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?

• A. Meteor scatter
• B. All these choices are correct
• C. Earth-Moon-Earth
• D. Weak signal propagation beacons

T1D10

24. 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

T0B09

25. Why should you avoid attaching an antenna to a utility pole?

• A. The 60 Hz radiations from the feed line may increase the SWR
• B. The antenna will not work properly because of induced voltages
• C. All these choices are correct
• D. The antenna could contact high-voltage power lines

T1A11

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

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

T7D07

27. Which of the following measurements are made using a multimeter?

• A. All these choices are correct
• B. Impedance and reactance
• C. Signal strength and noise
• D. Voltage and resistance

T1E09

28. Which of the following are required for remote control operation?

• A. All these choices are correct
• B. The control operator must indirectly manipulate the controls
• C. A control operator is required at all times
• D. The control operator must be at the control point

T2C04

29. What is RACES?

• A. An FCC part 97 amateur radio service for civil defense communications during national emergencies
• B. An emergency organization combining amateur radio and citizens band operators and frequencies
• C. An international radio experimentation society
• D. A radio contest held in a short period, sometimes called a "sprint"

T2B12

30. What is the purpose of the color code used on DMR repeater systems?

• A. Defines the minimum signal level required for access
• B. Identifies the codec used
• C. Defines the frequency pair to use
• D. Must match the repeater color code for access

T5B12

31. Which is equal to 28400 kHz?

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

T5C12

32. What is impedance?

• A. The opposition to AC current flow
• B. The power handling capability of a component
• C. The Q or Quality Factor of a component
• D. The inverse of resistance

T2A11

33. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Multiplex
• B. Full duplex
• C. Diplex
• D. Simplex

T8C02

34. Which of these items would be useful for a hidden transmitter hunt?

• A. A calibrated noise bridge
• B. A directional antenna
• C. All these choices are correct
• D. Calibrated SWR meter

T3B05

35. 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