Practice Exam

T7C09

1. Which of the following causes failure of coaxial cables?

• A. Moisture contamination
• B. Solder flux contamination
• C. Operation at 100% duty cycle for an extended period
• D. Rapid fluctuation in transmitter output power

T7A03

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

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

T6D06

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

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

T9A08

4. Why is a 19-inch-long vertical antenna often used on 2 meters?

• A. It has high gain
• B. It has low RF radiation exposure
• C. It is a resonant quarter-wave
• D. It is a resonant half-wave

T8C05

5. What is a grid locator?

• A. A letter-number designator assigned to an azimuth and elevation
• B. A letter-number designator assigned to a geographic location
• C. An instrument for locating faults in power amplifiers
• D. An instrument for radio direction finding

T8A01

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

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

T6B02

7. What electronic component allows current to flow in only one direction?

• A. Driven element
• B. Resistor
• C. Fuse
• D. Diode

T0B03

8. 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. Never
• C. When no electrical work is being performed
• D. When no mechanical work is being performed

T1C05

9. Which of the following is a valid Group D call sign format for Technician class?

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

T3B09

10. What frequency range is referred to as UHF?

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

T5B10

11. Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

• A. -3 dB
• B. -1 dB
• C. -6 dB
• D. -9 dB

T1A10

12. Besides an FCC-issued amateur operator license, what is required to be the control operator of a Radio Amateur Civil Emergency Service (RACES) Station?

• A. Nothing
• B. Membership in the Amateur Radio Emergency Service (ARES)
• C. A written recommendation by the local ARRL Emergency Coordinator
• D. Certification of current enrollment by a civil defense organization

T1F06

13. Which of the following self-assigned indicators are acceptable when using a phone transmission?

• A. KL7CC slash W3
• B. KL7CC slant W3
• C. All these choices are correct
• D. KL7CC stroke W3

T2B05

14. Which of the following would cause your FM transmission audio to drop out on voice peaks?

• A. Your transmit power is too high
• B. You are talking too loudly
• C. Your repeater offset is inverted
• D. Your FM deviation is too low

T5A03

15. What is the term for the flow of electrons in an electric circuit?

• A. Current
• B. Volts per second
• C. Amperes per second
• D. Voltage

T6C09

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

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

T4B11

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

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

T8D04

18. What is meant by the term "NTSC?"

• A. A frame compression scheme for TV signals
• B. A special mode for satellite uplink
• C. A digital transmission standard for encrypting data
• D. An analog fast-scan color TV signal

T2C10

19. What information is contained in the preamble of a formal traffic message?

• A. The email address of the originating station
• B. The address of the intended recipient
• C. Information needed to track the message
• D. The telephone number of the addressee

T6A02

20. What type of component is often used as an adjustable volume control?

• A. Fixed resistor
• B. Potentiometer
• C. Power resistor
• D. Transformer

T0A07

21. 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 AC power service panel
• D. At the antenna feed point

T1E07

22. When the control operator is not the station licensee, who is responsible for the proper operation of the station?

• A. Only the control operator
• B. Only the station licensee
• C. All licensed amateurs who are present at the operation
• D. The control operator and the station licensee

T5C12

23. What is impedance?

• A. The power handling capability of a component
• B. The inverse of reactance
• C. The opposition to AC current flow
• D. The inverse of resistance

T2A02

24. What is the national calling frequency for FM simplex operations in the 2-meter band?

• A. 446.000 MHz
• B. 146.520 MHz
• C. 145.000 MHz
• D. 432.100 MHz

T0C06

25. Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations?

• A. By measurement of field strength using calibrated equipment
• B. By calculation based on FCC OET Bulletin 65
• C. By calculation based on computer modeling
• D. All these choices are correct

T3A05

26. When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?

• A. Try the long path
• B. Increase the antenna SWR
• C. Change from vertical to horizontal polarization
• D. Try to find a path that reflects signals to the repeater

T7B03

27. Which of the following can cause radio frequency interference?

• A. Fundamental overload
• B. Harmonics
• C. Spurious emissions
• D. All these choices are correct

T8B01

28. What telemetry information is typically transmitted by satellite beacons?

• A. All these choices are correct
• B. The signal strength of received signals
• C. Time of day accurate to plus or minus 1/10 second
• D. Health and status of the satellite

T1B04

29. Which amateur band includes 146.52 MHz?

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

T9B08

30. Which of the following is a source of loss in coaxial feed line?

• A. All these choices are correct
• B. High SWR
• C. Water intrusion into coaxial connectors
• D. Multiple connectors in the line

T1D06

31. What, if any, are the restrictions concerning transmission of language that may be considered indecent or obscene?

• A. The FCC maintains a list of words that are not permitted to be used on amateur frequencies
• B. There is no such prohibition
• C. The International Telecommunications Union (ITU) maintains a list of words that are not permitted to be used on amateur frequencies
• D. Any such language is prohibited

T4A12

32. What is an electronic keyer?

• A. A device for switching antennas from transmit to receive
• B. A device that assists in manual sending of Morse code
• C. An interlock to prevent unauthorized use of a radio
• D. A device for voice activated switching from receive to transmit

T5D07

33. What is the current in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?

• A. 9600 amperes
• B. 1.5 amperes
• C. 0.667 amperes
• D. 200 amperes

T3C10

34. Which of the following bands may provide long-distance communications via the ionosphere's F region during the peak of the sunspot cycle?

• A. All these choices are correct
• B. 6 and 10 meters
• C. 23 centimeters
• D. 70 centimeters and 1.25 meters

T7D01

35. Which instrument would you use to measure electric potential?

• A. A potentiometer
• B. A voltmeter
• C. An ammeter
• D. An ohmmeter