Practice Exam

T1D04

1. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When incidental to an authorized retransmission of manned spacecraft communications
• B. When the music produces no spurious emissions
• C. When the music is transmitted above 1280 MHz
• D. When transmissions are limited to less than three minutes per hour

T8A07

2. What is a characteristic of single sideband (SSB) compared to FM?

• A. SSB signals have narrower bandwidth
• B. SSB signals are less susceptible to interference
• C. All these choices are correct
• D. SSB signals are easier to tune in correctly

T8D03

3. What kind of data can be transmitted by APRS?

• A. Text messages
• B. GPS position data
• C. Weather data
• D. All these choices are correct

T7D07

4. 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

T0B06

5. 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. Enough so that if the antenna falls, no part of it can come closer than 10 feet to the power wires
• D. 1/2 wavelength at the operating frequency

T5D14

6. In which type of circuit is voltage the same across all components?

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

T3A07

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

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

T2C05

8. What does the term "traffic" refer to in net operation?

• A. Operation by mobile or portable stations
• B. Requests to activate the net by a served agency
• C. Messages exchanged by net stations
• D. The number of stations checking in and out of a net

T6C04

9. What is component 3 in figure T-1?

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

T4A01

10. Which of the following is an appropriate power supply rating for a typical 50 watt output mobile FM transceiver?

• A. 13.8 volts at 12 amperes
• B. 13.8 volts at 4 amperes
• C. 24.0 volts at 4 amperes
• D. 24.0 volts at 12 amperes

T4B11

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

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

T9B04

12. What is the major function of an antenna tuner (antenna coupler)?

• A. It allows an antenna to be used on both transmit and receive
• B. It matches the antenna system impedance to the transceiver's output impedance
• C. It automatically selects the proper antenna for the frequency band being used
• D. It helps a receiver automatically tune in weak stations

T0C10

13. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It takes into account the antenna feed line loss
• B. It takes into account the thermal effects of the final amplifier
• C. It affects the average exposure to radiation
• D. It affects the peak exposure to radiation

T2B05

14. What would cause your FM transmission audio to be distorted on voice peaks?

• A. Your transmit power is too high
• B. You need to talk louder
• C. You are talking too loudly
• D. Your repeater offset is inverted

T6B11

15. What is the term that describes a device's ability to amplify a signal?

• A. Forward voltage drop
• B. Gain
• C. On resistance
• D. Forward resistance

T7C11

16. What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

• A. It cannot be used for VHF or UHF antennas
• B. It requires special techniques to prevent moisture in the cable
• C. It cannot be used at below freezing temperatures
• D. It has more loss per foot

T5C11

17. How much current is required to deliver 120 watts at a voltage of 12 volts DC?

• A. 12 amperes
• B. 132 amperes
• C. 0.1 amperes
• D. 10 amperes

T8B10

18. What is a LEO satellite?

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

T8C05

19. What is a grid locator?

• A. An instrument for radio direction finding
• B. A letter-number designator assigned to an azimuth and elevation
• C. An instrument for neutralizing a final amplifier
• D. A letter-number designator assigned to a geographic location

T5A05

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

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

T2A07

21. What is meant by "repeater offset"?

• A. The repeater station identification is done on a separate frequency
• B. The number of simultaneous transmit frequencies used by a repeater
• C. The difference between a repeater's transmit and receive frequencies
• D. The repeater has a time delay to prevent interference

T6D09

22. What is the name of a device that combines several semiconductors and other components into one package?

• A. Transformer
• B. Multi-pole relay
• C. Transducer
• D. Integrated circuit

T7B05

23. How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

• A. Block the interfering signal with a filter on the amateur transmitter
• B. Switch the transmitter to a narrow-band mode
• C. Block the amateur signal with a filter at the antenna input of the affected receiver
• D. Switch the transmitter from FM to SSB

T1E04

24. What determines the transmitting frequency privileges of an amateur station?

• A. The frequency authorized by the frequency coordinator
• B. The highest class of operator license held by anyone on the premises
• C. The frequencies printed on the license grant
• D. The class of operator license held by the control operator

T1B02

25. Which amateurs may contact the International Space Station (ISS) on VHF bands?

• A. Any amateur holding a General class or higher license
• B. Any amateur holding a Technician class or higher license
• C. Any amateur holding a General class or higher license who has applied for and received approval from NASA
• D. Any amateur holding a Technician class or higher license who has applied for and received approval from NASA

T3C11

26. Why is the radio horizon for VHF and UHF signals more distant than the visual horizon?

• A. Radio waves are blocked by dust particles
• B. The atmosphere refracts radio waves slightly
• C. Radio signals move somewhat faster than the speed of light
• D. Radio waves are not blocked by dust particles

T6A09

27. What electrical component is used to protect other circuit components from current overloads?

• A. Fuse
• B. Varactor
• C. All these choices are correct
• D. Thyratron

T5B03

28. Which is equal to one kilovolt?

• A. One million volts
• B. One one-thousandth of a volt
• C. One thousand volts
• D. One hundred volts

T9A05

29. Which of the following increases the resonant frequency of a dipole antenna?

• A. Adding capacitive loading to the ends of the radiating wires
• B. Shortening it
• C. Lengthening it
• D. Inserting coils in series with radiating wires

T3B02

30. What property of a radio wave defines its polarization?

• A. The orientation of the magnetic field
• B. The orientation of the electric field
• C. The ratio of the velocity to the wavelength
• D. The ratio of the energy in the magnetic field to the energy in the electric field

T7A03

31. Which of the following is used to convert a signal from one frequency to another?

• A. Inverter
• B. Phase splitter
• C. Amplifier
• D. Mixer

T1F02

32. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. Once during every hour
• B. Never, the tactical call is sufficient
• C. At the end of each communication and every ten minutes during a communication
• D. At the end of every transmission

T1A10

33. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. A radio service using amateur frequencies for emergency management or civil defense communications
• B. All these choices are correct
• C. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
• D. A radio service using amateur stations for emergency management or civil defense communications

T0A11

34. 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

T1C06

35. From which of the following locations may an FCC-licensed amateur station transmit?

• A. From any vessel or craft located in international waters and documented or registered in the United States
• B. From within any country that is a member of the United Nations
• C. From within any country that belongs to the International Telecommunication Union
• D. From anywhere within International Telecommunication Union (ITU) Regions 2 and 3