Practice Exam

T8B09

1. What causes spin fading of satellite signals?

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

T9B01

2. What is a benefit of low SWR?

• A. Reduced signal loss
• B. Less antenna wear
• C. All these choices are correct
• D. Reduced television interference

T7B07

3. 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

T0B06

4. What is the minimum safe distance from a power line to allow when installing an antenna?

• A. Add the height of the antenna to the height of the power line and multiply by a factor of 1.5
• B. The height of the power line above ground
• C. 1/2 wavelength at the operating frequency
• D. Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires

T7A01

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

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

T0C12

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

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

T3A01

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

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

T1B08

8. How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

• A. Digital transmissions are not permitted in those segments
• B. International communications are not permitted in those segments
• C. U.S. amateurs must give foreign amateur stations priority in those segments
• D. U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them

T8A03

9. Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

• A. PM
• B. DRM
• C. FM
• D. SSB

T7C01

10. What is the primary purpose of a dummy load?

• A. To prevent over-modulation of a transmitter
• B. To improve the efficiency of an antenna
• C. To improve the signal-to-noise ratio of a receiver
• D. To prevent transmitting signals over the air when making tests

T6C05

11. What is component 4 in figure T-1?

• A. Ground symbol
• B. Battery
• C. Transistor
• D. Resistor

T5D11

12. What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

• A. 11 volts
• B. 10 volts
• C. 9 volts
• D. 1 volt

T6B10

13. Which of the following can provide power gain?

• A. Reactor
• B. Resistor
• C. Transistor
• D. Transformer

T4B11

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

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

T2C04

15. What is RACES?

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

T5B07

16. Which is equal to 3.525 MHz?

• A. 0.003525 kHz
• B. 3,525,000 kHz
• C. 3525 kHz
• D. 35.25 kHz

T1E06

17. When, under normal circumstances, may a Technician class licensee be the control operator of a station operating in an Amateur Extra Class band segment?

• A. When using a club station whose trustee holds an Amateur Extra Class license
• B. As part of a multi-operator contest team
• C. At no time
• D. When designated as the control operator by an Amateur Extra Class licensee

T3B09

18. 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

T5C01

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

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

T8C02

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

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

T4A02

21. Which of the following should be considered when selecting an accessory SWR meter?

• A. The types of modulation being used at the station
• B. All these choices are correct
• C. The distance that the meter will be located from the antenna
• D. The frequency and power level at which the measurements will be made

T6D06

22. What component changes 120 V AC power to a lower AC voltage for other uses?

• A. Diode
• B. Transformer
• C. Variable capacitor
• D. Transistor

T1F10

23. Who is accountable if a repeater inadvertently retransmits communications that violate the FCC rules?

• A. Both the originating station and the repeater owner
• B. The control operator of the repeater
• C. The control operator of the originating station
• D. The owner of the repeater

T3C04

24. Which of the following types of propagation is most commonly associated with occasional strong signals on the 10, 6, and 2 meter bands from beyond the radio horizon?

• A. Backscatter
• B. Gray-line propagation
• C. D region absorption
• D. Sporadic E

T9A09

25. What is the approximate length, in inches, of a half-wavelength 6 meter dipole antenna?

• A. 6
• B. 112
• C. 50
• D. 236

T2B01

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

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

T1D03

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

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

T1C03

28. What types of international communications are an FCC-licensed amateur radio station permitted to make?

• A. Communications incidental to the purposes of the Amateur Radio Service and remarks of a personal character
• B. Communications incidental to conducting business or remarks of a personal nature
• C. Only communications incidental to contest exchanges; all other communications are prohibited
• D. Any communications that would be permitted by an international broadcast station

T2A09

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

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

T5A10

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

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

T7D03

31. When configured to measure current, how is a multimeter connected to a component?

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

T1A08

32. Which of the following entities recommends transmit/receive channels and other parameters for auxiliary and repeater stations?

• A. International Telecommunication Union
• B. Volunteer Frequency Coordinator recognized by local amateurs
• C. FCC Regional Field Office
• D. Frequency Spectrum Manager appointed by the FCC

T0A12

33. Which of the following precautions should be taken when measuring high voltages with a voltmeter?

• A. Ensure that the voltmeter and leads are rated for use at the voltages to be measured
• B. Ensure that the voltmeter has very low impedance
• C. Ensure that the circuit is grounded through the voltmeter
• D. Ensure that the voltmeter is set to the correct frequency

T8D06

34. What does the abbreviation "PSK" mean?

• A. Packet Short Keying
• B. Phased Slide Keying
• C. Phase Shift Keying
• D. Pulse Shift Keying

T6A07

35. What electrical component is typically constructed as a coil of wire?

• A. Diode
• B. Inductor
• C. Capacitor
• D. Switch