Practice Exam

T3C05

1. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

• A. Quantum tunneling
• B. Knife-edge diffraction
• C. Doppler shift
• D. Faraday rotation

T3A11

2. Which region of the atmosphere can reflect HF radio waves?

• A. The stratosphere
• B. The troposphere
• C. The electrosphere
• D. The ionosphere

T1E11

3. What is a control operator as defined in Part 97?

• A. An amateur operator identified in the FCC database as responsible for transmissions and FCC rules compliance at a station license location
• B. An amateur operator designated by the licensee of a station to be responsible for transmissions and FCC rules compliance at that station
• C. The person speaking or otherwise communicating messages over an amateur station
• D. The person who is the licensee of an amateur station

T8C10

4. What is required before using the EchoLink system?

• A. Purchase a license to use the EchoLink software
• B. At least a General Class license
• C. Register your call sign and provide proof of license
• D. Complete the required EchoLink training

T2B11

5. Which Q signal indicates that you are changing frequency?

• A. QSY
• B. QSL
• C. QRZ
• D. QRU

T1D04

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

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

T3B12

7. Which of these frequencies travels at the highest velocity in free space?

• A. VHF
• B. UHF
• C. All radio frequencies travel at the same velocity
• D. Microwaves

T0C12

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

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

T0A02

9. What health hazard is posed by electrical current flowing through the body?

• A. All these choices are correct
• B. It may cause involuntary muscle contractions
• C. It may disrupt the electrical functions of cells
• D. It may cause injury by heating body tissue

T6B09

10. What are the names for the electrodes of a diode?

• A. Source and drain
• B. Anode and cathode
• C. Gate and base
• D. Plus and minus

T7B10

11. What might be a problem if you receive a report that your audio signal through an FM repeater is distorted or unintelligible?

• A. Your transmitter is slightly off frequency
• B. You are in a bad location
• C. You are speaking too loudly or too close to the microphone
• D. All these choices are correct

T2C04

12. What is RACES?

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

T6A09

13. What type of switch is represented by component 3 in figure T-2?

• A. Single-pole single-throw
• B. Double-pole single-throw
• C. Double-pole double-throw
• D. Single-pole double-throw

T8A09

14. What is the approximate bandwidth of an FM voice signal on VHF repeaters?

• A. About 150 kHz
• B. Between 10 and 15 kHz
• C. Between 50 and 125 kHz
• D. Less than 500 Hz

T5C01

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

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

T6D04

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

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

T1C04

17. What may happen if the FCC is unable to reach you by email?

• A. Nothing; there is no such requirement
• B. Fine and suspension of operator license
• C. Revocation of access to the license record in the FCC system
• D. Revocation of the station license or suspension of the operator license

T4B09

18. How is a specific group of stations selected on a DMR digital voice transceiver?

• A. By entering the group's identification code
• B. By inserting a five-pin, pre-programmed code plug
• C. By retrieving the frequencies from transceiver memory
• D. By enabling the group's CTCSS tone

T5B07

19. Which is equal to 3.525 MHz?

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

T9A04

20. What is a disadvantage of a handheld radio transceiver's short flexible antenna compared to a full-sized quarter- wave antenna?

• A. It transmits only circularly polarized signals
• B. It is more susceptible to receiver desensitization
• C. It has low efficiency
• D. It only works on analog signals, not digital ones

T7A01

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

• A. Selectivity
• B. Sensitivity
• C. Total Harmonic Distortion
• D. RF gain

T5A09

22. Which of the following describes alternating current?

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

T7C01

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

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

T9B04

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

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

T7D11

25. Which of the following precautions should be taken when measuring in-circuit resistance with an ohmmeter?

• A. Ensure that the circuit is not powered
• B. Ensure that the applied voltages are correct
• C. Ensure that the circuit is operating at the correct frequency
• D. Ensure that the circuit is grounded

T1B07

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

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

T2A03

27. What is a common repeater frequency offset in the 70-centimeter band?

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

T8B08

28. What does it mean if a satellite is operating in U/V mode?

• A. The satellite operates using ultraviolet frequencies
• 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 frequencies are usually variable

T4A08

29. Which of the following conductors is preferred for bonding at RF?

• A. Flat copper strap
• B. Copper-clad steel wire
• C. Twisted-pair cable
• D. Copper braid removed from coaxial cable

T1F02

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

• A. At least every 10 minutes during and at the end of a communication
• B. Once every hour
• C. Never, the tactical call is sufficient
• D. At the end of every transmission

T0B06

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

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

T5D05

32. What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

• A. 13.5 ohms
• B. 18 ohms
• C. 0.125 ohms
• D. 8 ohms

T1A09

33. Who selects a Frequency Coordinator?

• A. Amateur operators in a local or regional area whose stations are eligible to be repeater or auxiliary stations
• B. The FCC Regional Field Office
• C. The local chapter of the Office of National Council of Independent Frequency Coordinators
• D. The FCC Office of Spectrum Management and Coordination Policy

T8D04

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

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

T6C02

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

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