Practice Exam

T0C05

1. Why do exposure limits vary with frequency?

• A. Higher frequency RF fields are transient in nature
• B. Lower frequency RF fields do not penetrate the human body
• C. The human body absorbs more RF energy at some frequencies than at others
• D. Lower frequency RF fields have more energy than higher frequency fields

T9A12

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

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

T6D04

3. Which of the following displays an electrical quantity as a numeric value?

• A. Relay
• B. Meter
• C. Transistor
• D. Potentiometer

T7C04

4. What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line?

• A. Full Scale
• B. 1:1
• C. 50:50
• D. Zero

T3C04

5. 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. D region absorption
• C. Sporadic E
• D. Gray-line propagation

T7B06

6. 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. All these choices are correct
• B. Immediately turn off your transmitter and contact the nearest FCC office for assistance
• C. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• D. 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

T6C09

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

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

T2A01

8. What is a common repeater frequency offset in the 2 meter band?

• A. Plus or minus 600 kHz
• B. Plus or minus 5 MHz
• C. Plus or minus 1 MHz
• D. Plus or minus 500 kHz

T6A04

9. What electrical component stores energy in an electric field?

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

T5B02

10. Which is equal to 1,500,000 hertz?

• A. 15 GHz
• B. 1500 kHz
• C. 150 kHz
• D. 1500 MHz

T1D04

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

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

T3A10

12. What effect does multi-path propagation have on data transmissions?

• A. No significant changes will occur if the signals are transmitted using FM
• B. Error rates are likely to increase
• C. Transmission rates must be decreased by a factor equal to the number of separate paths observed
• D. Transmission rates must be increased by a factor equal to the number of separate paths observed

T1B04

13. Which amateur band includes 146.52 MHz?

• A. 70 centimeters
• B. 20 meters
• C. 2 meters
• D. 6 meters

T6B08

14. What does the abbreviation FET stand for?

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

T4B04

15. What is a way to enable quick access to a favorite frequency or channel on your transceiver?

• A. Use the scan mode to select the desired frequency
• B. Store it in a memory channel
• C. Enable the VOX
• D. Enable the frequency offset

T0B10

16. Which of the following is true when installing grounding conductors used for lightning protection?

• A. Use only non-insulated wire
• B. Sharp bends must be avoided
• C. Common grounds must be avoided
• D. Wires must be carefully routed with precise right-angle bends

T4A01

17. 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. 24.0 volts at 12 amperes
• C. 24.0 volts at 4 amperes
• D. 13.8 volts at 4 amperes

T3B08

18. What frequency range is referred to as VHF?

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

T5A04

19. What are the units of electrical resistance?

• A. Coulombs
• B. Ohms
• C. Mhos
• D. Siemens

T8B07

20. What is Doppler shift in reference to satellite communications?

• A. An observed change in signal frequency caused by relative motion between the satellite and Earth station
• B. A change in the satellite orbit
• C. A special digital communications mode for some satellites
• D. A mode where the satellite receives signals on one band and transmits on another

T7D06

21. Which of the following can damage a multimeter?

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

T7A07

22. What is the function of a transceiver's PTT input?

• A. Provides a transmit tuning tone when grounded
• B. Input for a preamplifier tuning tone
• C. Input for a key used to send CW
• D. Switches transceiver from receive to transmit when grounded

T8A04

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

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

T2C01

24. When do FCC rules NOT apply to the operation of an amateur station?

• A. When operating under special ARES rules
• B. When operating a RACES station
• C. When operating under special FEMA rules
• D. FCC rules always apply

T5D02

25. What formula is used to calculate voltage in a circuit?

• A. E= I x R
• B. E= I / R
• C. E = I - R
• D. E= I + R

T0A05

26. Why should a 5-ampere fuse never be replaced with a 20-ampere fuse?

• A. The power supply ripple would greatly increase
• B. All these choices are correct
• C. The larger fuse would be likely to blow because it is rated for higher current
• D. Excessive current could cause a fire

T1A11

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

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

T9B09

28. What can cause erratic changes in SWR?

• A. Loose connection in the antenna or feed line
• B. Local thunderstorm
• C. Overload from a strong local station
• D. Over-modulation

T1E08

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

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

T5C08

30. What is the formula used to calculate electrical power (P) in a DC circuit?

• A. P = E - I
• B. P = E * I
• C. P = E / I
• D. P = E + I

T2B08

31. Which of the following applies when two stations transmitting on the same frequency interfere with each other?

• A. Use subaudible tones so both stations can share the frequency
• B. Both stations should choose another frequency to avoid conflict
• C. The stations should negotiate continued use of the frequency
• D. Interference is inevitable, so no action is required

T1F03

32. When are you required to transmit your assigned call sign?

• A. At the beginning of each contact, and every 10 minutes thereafter
• B. At least every 15 minutes during and at the end of a communication
• C. At least once during each transmission
• D. At least every 10 minutes during and at the end of a communication

T1C11

33. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. Yes, as soon as you apply for renewal
• B. Yes, for up to one year
• C. Yes, for up to two years
• D. No, you must wait until the license has been renewed

T8D05

34. Which of the following is an application of APRS?

• A. Providing information on the number of stations signed into a repeater
• B. Showing automatically the number of packets transmitted via PACTOR during a specific time interval
• C. Providing voice over internet connection between repeaters
• D. Providing real-time tactical digital communications in conjunction with a map showing the locations of stations

T8C09

35. Which of the following protocols enables an amateur station to transmit through a repeater without using a radio to initiate the transmission?

• A. DMR
• B. D-STAR
• C. EchoLink
• D. IRLP