Practice Exam

T6A08

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

T2A12

2. What should you do before calling CQ?

• A. All these choices are correct
• B. Listen first to be sure that no one else is using the frequency
• C. Make sure you are authorized to use that frequency
• D. Ask if the frequency is in use

T7B06

3. Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception?

• A. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• B. Immediately turn off your transmitter and contact the nearest FCC office for assistance
• C. Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel
• D. All these choices are correct

T8A06

4. Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

• A. Suppressed sideband
• B. Lower sideband
• C. Inverted sideband
• D. Upper sideband

T4B06

5. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The AGC or limiter
• B. The bandwidth selection
• C. The RIT or Clarifier
• D. The tone squelch

T8D01

6. Which of the following is a digital communications mode?

• A. All these choices are correct
• B. IEEE 802.11
• C. FT8
• D. Packet radio

T5B12

7. Which is equal to 28400 kHz?

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

T5D13

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

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

T7D02

9. How is a voltmeter connected to a component to measure applied voltage?

• A. In parallel
• B. In phase
• C. In quadrature
• D. In series

T5A05

10. What is the electrical term for the force that causes electron flow?

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

T0B03

11. Under what circumstances is it safe to climb a tower without a helper or observer?

• A. When the work being done is not more than 20 feet above the ground
• B. When no mechanical work is being performed
• C. Never
• D. When no electrical work is being performed

T6B08

12. What does the abbreviation FET stand for?

• A. Fast Electron Transistor
• B. Frequency Emission Transmitter
• C. Free Electron Transmitter
• D. Field Effect Transistor

T2B02

13. What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

• A. DTMF
• B. CTCSS
• C. Carrier squelch
• D. Tone burst

T1F07

14. Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

• A. The foreign station must be in a country with which the U.S. has a third party agreement
• B. The person must be a U.S. citizen
• C. All these choices are correct
• D. The licensed control operator must do the station identification

T6D03

15. Which of the following is a reason to use shielded wire?

• A. To decrease the resistance of DC power connections
• B. To increase the current carrying capability of the wire
• C. To couple the wire to other signals
• D. To prevent coupling of unwanted signals to or from the wire

T6C09

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

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

T8C10

17. What is required before using the EchoLink system?

• A. Register your call sign and provide proof of license
• B. Purchase a license to use the EchoLink software
• C. All these choices are correct
• D. Complete the required EchoLink training

T1C05

18. Which of the following is a valid Technician class call sign format?

• A. W1XX
• B. All these choices are correct
• C. KA1X
• D. KF1XXX

T4A04

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

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

T5C09

20. How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

• A. 138 watts
• B. 0.7 watts
• C. 23.8 watts
• D. 3.8 watts

T1D03

21. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Only during contests
• B. Only when transmitting control commands to space stations or radio control craft
• C. Only when transmitting certain approved digital codes
• D. Never

T8B03

22. Which of the following are provided by satellite tracking programs?

• A. Maps showing the real-time position of the satellite track over Earth
• B. The time, azimuth, and elevation of the start, maximum altitude, and end of a pass
• C. All these choices are correct
• D. The apparent frequency of the satellite transmission, including effects of Doppler shift

T7C03

23. What does a dummy load consist of?

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

T3A07

24. What weather condition might decrease range at microwave frequencies?

• A. Colder temperatures
• B. Precipitation
• C. High winds
• D. Low barometric pressure

T1E08

25. Which of the following is an example of automatic control?

• A. Using a computer or other device to identify automatically
• B. Controlling a station over the internet
• C. Using a computer or other device to send CW automatically
• D. Repeater operation

T7A05

26. What is the name of a circuit that generates a signal at a specific frequency?

• A. Phase modulator
• B. Low-pass filter
• C. Reactance modulator
• D. Oscillator

T3C02

27. What is a characteristic of HF communication compared with communications on VHF and higher frequencies?

• A. There is less atmospheric interference (static) on HF
• B. HF accommodates wider bandwidth signals
• C. Long-distance ionospheric propagation is far more common on HF
• D. HF antennas are generally smaller

T0A07

28. Where should a lightning arrester be installed in a coaxial feed line?

• A. At the output connector of a transceiver
• B. On a grounded panel near where feed lines enter the building
• C. At the antenna feed point
• D. At the ac power service panel

T0C12

29. How does RF radiation differ from ionizing radiation (radioactivity)?

• A. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA
• B. RF radiation can only be detected with an RF dosimeter
• C. RF radiation is limited in range to a few feet
• D. RF radiation is perfectly safe

T3B05

30. What is the relationship between wavelength and frequency?

• A. Wavelength gets longer as frequency increases
• B. Wavelength and frequency are unrelated
• C. Wavelength gets shorter as frequency increases
• D. Wavelength and frequency increase as path length increases

T1B12

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

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

T9A02

32. Which of the following describes a type of antenna loading?

• A. Inserting a resistor in the radiating portion of the antenna to make it resonant
• B. Installing a spring in the base of a mobile vertical antenna to make it more flexible
• C. Strengthening the radiating elements of a beam antenna to better resist wind damage
• D. Electrically lengthening by inserting inductors in radiating elements

T1A06

33. What is the FCC Part 97 definition of a beacon?

• A. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
• B. A government transmitter marking the amateur radio band edges
• C. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
• D. A bulletin sent by the FCC to announce a national emergency

T9B12

34. What is standing wave ratio (SWR)?

• A. The transmitter efficiency ratio
• B. The ratio of amplifier power output to input
• C. An indication of the quality of your station's ground connection
• D. A measure of how well a load is matched to a transmission line

T2C08

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

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