Practice Exam

T6C02

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

• A. Connector
• B. Battery
• C. Resistor
• D. Transistor

T4B07

2. What does a DMR "code plug" contain?

• A. Your call sign in CW for automatic identification
• B. Access information for repeaters and talkgroups
• C. The DMR software version
• D. The codec for digitizing audio

T1A07

3. What is the FCC Part 97 definition of a space station?

• A. Any satellite orbiting Earth
• B. A manned satellite orbiting Earth
• C. An amateur station located more than 50 km above Earth's surface
• D. An amateur station using amateur radio satellites for relay of signals

T7D10

4. What reading indicates that an ohmmeter is connected across a large, discharged capacitor?

• A. Increasing resistance with time
• B. Decreasing resistance with time
• C. Alternating between open and short circuit
• D. Steady full-scale reading

T1D09

5. When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

• A. When broadcasting communications to or from the space shuttle
• B. Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network
• C. Never
• D. When such communications are directly related to the immediate safety of human life or protection of property

T0B02

6. What is required when climbing an antenna tower?

• A. Have sufficient training on safe tower climbing techniques
• B. Use appropriate tie-off to the tower at all times
• C. All these choices are correct
• D. Always wear an approved climbing harness

T8D10

7. Which of the following operating activities is supported by digital mode software in the WSJT-X software suite?

• A. Weak signal propagation beacons
• B. Meteor scatter
• C. Earth-Moon-Earth
• D. All these choices are correct

T1E04

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

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

T7B11

9. What is a symptom of RF feedback in a transmitter or transceiver?

• A. Frequent blowing of power supply fuses
• B. Reports of garbled, distorted, or unintelligible voice transmissions
• C. Excessive SWR at the antenna connection
• D. The transmitter will not stay on the desired frequency

T7A04

10. Which term describes the ability of a receiver to discriminate between multiple signals?

• A. Selectivity
• B. Sensitivity
• C. Harmonic distortion
• D. Discrimination ratio

T8A08

11. What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• A. 15 kHz
• B. 1 kHz
• C. 6 kHz
• D. 3 kHz

T3B11

12. What is the approximate velocity of a radio wave in free space?

• A. 150,000 miles per hour
• B. 150,000 meters per second
• C. 300,000,000 miles per hour
• D. 300,000,000 meters per second

T9A09

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

• A. 236
• B. 6
• C. 50
• D. 112

T2C10

14. 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

T9B11

15. Which of the following types of feed line has the lowest loss at VHF and UHF?

• A. 50-ohm flexible coax
• B. Air-insulated hardline
• C. 75-ohm flexible coax
• D. Multi-conductor unbalanced cable

T5A09

16. Which of the following describes alternating current?

• A. Current that alternates between a positive direction and zero
• B. Current that alternates between a negative direction and zero
• C. Current that alternates between positive and negative directions
• D. All these answers are correct

T6B07

17. What causes a light-emitting diode (LED) to emit light?

• A. Capacitively-coupled RF signal
• B. Reverse current
• C. Inductively-coupled RF signal
• D. Forward current

T2A09

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

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

T1F08

19. What is the definition of third party communications?

• A. Amateur radio communications where three stations are in communications with one another
• B. Temporary authorization for an unlicensed person to transmit on the amateur bands for technical experiments
• C. Operation when the transmitting equipment is licensed to a person other than the control operator
• D. A message from a control operator to another amateur station control operator on behalf of another person

T3C04

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

T3A04

21. What happens when antennas at opposite ends of a VHF or UHF line of sight radio link are not using the same polarization?

• A. The modulation sidebands might become inverted
• B. Signals have an echo effect
• C. Received signal strength is reduced
• D. Nothing significant will happen

T4A11

22. Where should the negative power return of a mobile transceiver be connected in a vehicle?

• A. Through the transceiver's mounting bracket
• B. To any metal part of the vehicle
• C. At the 12 volt battery chassis ground
• D. At the antenna mount

T8C04

23. Which of the following is good procedure when contacting another station in a contest?

• A. Send only the minimum information needed for proper identification and the contest exchange
• B. Sign only the last two letters of your call if there are many other stations calling
• C. All these choices are correct
• D. Contact the station twice to be sure that you are in his log

T5D12

24. What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

• A. 0.2 volts
• B. 8 volts
• C. 20 volts
• D. 12 volts

T6A06

25. What type of electrical component stores energy in a magnetic field?

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

T5C02

26. What is the unit of capacitance?

• A. The ohm
• B. The farad
• C. The henry
• D. The volt

T1B07

27. Which of the following VHF/UHF band segments are limited to CW only?

• A. 902.0 MHz to 902.1 MHz
• B. 219 MHz to 220 MHz and 420.0 MHz to 420.1 MHz
• C. All these choices are correct
• D. 50.0 MHz to 50.1 MHz and 144.0 MHz to 144.1 MHz

T0A03

28. In the United States, what circuit does black wire insulation indicate in a three-wire 120 V cable?

• A. Black insulation is never used
• B. Equipment ground
• C. Hot
• D. Neutral

T6D05

29. What type of circuit controls the amount of voltage from a power supply?

• A. Filter
• B. Oscillator
• C. Regulator
• D. Phase inverter

T8B08

30. What is meant by the statement that a satellite is operating in U/V mode?

• A. The satellite frequencies are usually variable
• B. The satellite uplink is in the 15 meter band and the downlink is in the 10 meter band
• C. The satellite uplink is in the 70 centimeter band and the downlink is in the 2 meter band
• D. The satellite operates using ultraviolet frequencies

T7C05

31. Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

• A. Because power supplies cannot supply enough current at high SWR
• B. To comply with FCC rules on spectral purity
• C. To lower the SWR on the transmission line
• D. To protect the output amplifier transistors

T2B07

32. How can you join a digital repeater's "talkgroup"?

• A. Sign your call after the courtesy tone
• B. Join the repeater owner's club
• C. Program your radio with the group's ID or code
• D. Register your radio with the local FCC office

T0C01

33. What type of radiation are radio signals?

• A. Alpha radiation
• B. Ionizing radiation
• C. Non-ionizing radiation
• D. Gamma radiation

T1C11

34. 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. No, you must wait until the license has been renewed
• C. Yes, for up to two years
• D. Yes, for up to one year

T5B02

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

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