Practice Exam

T4A05

1. Where should an RF power meter be installed?

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

T3A04

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

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

T6D05

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

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

T9B02

4. What is the most common impedance of coaxial cables used in amateur radio?

• A. 600 ohms
• B. 50 ohms
• C. 12 ohms
• D. 8 ohms

T5B05

5. Which is equal to 500 milliwatts?

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

T1E02

6. Who may be the control operator of a station communicating through an amateur satellite or space station?

• A. Only an Amateur Extra Class operator who is also an AMSAT member
• B. Any amateur allowed to transmit on the satellite uplink frequency
• C. A General class or higher licensee with a satellite operator certification
• D. Only an Amateur Extra Class operator

T2B03

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

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

T0C09

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

• A. By making sure your antennas have low SWR
• B. By informing the FCC of any changes made in your station
• C. By re-evaluating the station whenever an item in the transmitter or antenna system is changed
• D. All these choices are correct

T7B08

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

T1A07

10. What is the FCC Part 97 definition of a space station?

• A. An amateur station using amateur radio satellites for relay of signals
• B. An amateur station located more than 50 km above Earth's surface
• C. A manned satellite orbiting Earth
• D. Any satellite orbiting Earth

T2C02

11. Which of the following are typical duties of a Net Control Station?

• A. Choose the regular net meeting time and frequency
• B. Ensure that all stations checking into the net are properly licensed for operation on the net frequency
• C. Call the net to order and direct communications between stations checking in
• D. All these choices are correct

T7C03

12. What does a dummy load consist of?

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

T1C08

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

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

T1B07

14. Which of the following VHF/UHF band segments are limited to CW only?

• A. 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz
• B. 902.0 MHz to 902.1 MHz
• C. 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
• D. All these choices are correct

T0B05

15. What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. Secure the guy line if the turnbuckle breaks
• B. Prevent loosening of the turnbuckle from vibration
• C. Provide an ability to measure for proper tensioning
• D. Provide a ground path for lightning strikes

T8B10

16. What is a LEO satellite?

• A. A satellite in low energy operation mode
• B. A sun synchronous satellite
• C. A satellite in low earth orbit
• D. A highly elliptical orbit satellite

T9A12

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

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

T7D06

18. Which of the following can damage a multimeter?

• A. Not allowing it to warm up properly
• B. Failing to connect one of the probes to ground
• C. Attempting to measure resistance using the voltage setting
• D. Attempting to measure voltage when using the resistance setting

T8D13

19. What is FT8?

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

T3C03

20. 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 occur only during winter nighttime hours
• D. They are generally strongest when your antenna is aimed west

T3B09

21. What frequency range is referred to as UHF?

• A. 30 to 300 MHz
• B. 30 to 300 kHz
• C. 300 to 3000 kHz
• D. 300 to 3000 MHz

T1F08

22. What is the definition of third party communications?

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

T6B01

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

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

T5D13

24. In which type of circuit is DC current the same through all components?

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

T7A01

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

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

T1D05

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

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

T8C02

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

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

T5A03

28. What is the name for the flow of electrons in an electric circuit?

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

T0A04

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

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

T6C12

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

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

T5C01

31. What describes the ability to store energy in an electric field?

• A. Capacitance
• B. Tolerance
• C. Inductance
• D. Resistance

T4B12

32. What is the result of tuning an FM receiver above or below a signal's frequency?

• A. Sideband inversion
• B. Generation of a heterodyne tone
• C. Distortion of the signal's audio
• D. Change in audio pitch

T2A11

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

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

T6A08

34. What is the function of an SPDT switch?

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

T8A01

35. Which of the following is a form of amplitude modulation?

• A. Single sideband
• B. Phase shift keying (PSK)
• C. Spread spectrum
• D. Packet radio